19-4760; Rev 1; 8/02 Quad, Rail-to-Rail, Fault-Protected, SPST Analog Switches On-resistance is 175 max and is matched between switches to 10 max. The off-leakage current is only 0.5nA at +25C and 10nA at +85C. The MAX4511 has four normally closed switches. The MAX4512 has four normally open switches. The MAX4513 has two normally closed and two normally open switches. These CMOS switches can operate with dual power supplies ranging from 4.5V to 18V or a single supply between +9V and +36V. All digital inputs have +0.8V and +2.4V logic thresholds, ensuring both TTL- and CMOS-logic compatibility when using 15V or a single +12V supply. Applications ATE Equipment Avionics Data Acquisition Redundant/Backup Systems Industrial and ProcessControl Systems MAX4511CPE TEMP RANGE 0C to +70C 40V Fault Protection with Power Off 36V Fault Protection with 15V Supplies All Switches Off with Power Off Rail-to-Rail Signal Handling Output Clamped to Appropriate Supply Voltage During Fault Condition; No Transition Glitch 175 max Signal Paths with 15V Supplies No Power-Supply Sequencing Required 4.5V to 18V Dual Supplies +9V to +36V Single Supply Low Power Consumption, <2mW Four Separately Controlled SPST Switches Pin-Compatible with Industry-Standard DG411/DG412/DG413, DG201/DG202/DG213 TTL- and CMOS-Compatible Logic Inputs with Single +9V to +15V or 15V Supplies Pin Configurations/ Functional Diagrams/Truth Tables TOP VIEW IN1 1 16 IN2 COM1 2 15 COM2 NC1 3 14 NC2 V- 4 13 V+ GND 5 12 N.C. NC4 6 11 NC3 16 Plastic DIP COM4 7 10 IN4 8 9 Ordering Information PART Features PIN-PACKAGE MAX4511CSE 0C to +70C 16 Narrow SO MAX4511CUE 0C to +70C 16 TSSOP MAX4511C/D 0C to +70C Dice* MAX4511EPE -40C to +85C 16 Plastic DIP MAX4511ESE -40C to +85C 16 Narrow SO MAX4511EUE -40C to +85C 16 TSSOP MAX4511MJE -55C to +125C 16 CERDIP Ordering Information continued at end of data sheet. *Contact factory for dice specifications. Rail-to-Rail is a registered trademark of Nippon Motorola, Ltd. MAX4511 COM3 IN3 DIP/SO/TSSOP MAX4511 LOGIC SWITCH 0 1 ON OFF N.C. = NOT CONNECTED SWITCHES SHOWN FOR LOGIC "0" INPUT. ALL SWITCHES ARE OFF WITH POWER REMOVED. Continued at end of data sheet. ________________________________________________________________ Maxim Integrated Products 1 For free samples & the latest literature: http://www.maxim-ic.com, or phone 1-800-998-8800. For small orders, phone 408-737-7600 ext. 3468. MAX4511/MAX4512/MAX4513 General Description The MAX4511/MAX4512/MAX4513 are quad, singlepole/single-throw (SPST), fault-protected analog switches. They are pin-compatible with the industry-standard nonprotected DG201/DG202/DG213. These new switches feature fault-protected inputs and Rail-to-Rail(R) signal handling capability. The normally open (NO_) and normally closed (NC_) terminals are protected from overvoltage faults up to 36V during power-up or power-down. During a fault condition, the NO_ or NC_ terminal becomes an open circuit and only nanoamperes of leakage current flow from the source, but the switch output (COM_) furnishes up to 10mA of the appropriate polarity supply voltage to the load. This ensures unambiguous rail-to-rail outputs when a fault begins and ends. ABSOLUTE MAXIMUM RATINGS (Voltages Referenced to GND) V+ ........................................................................-0.3V to +44.0V V- .........................................................................-44.0V to +0.3V V+ to V-................................................................-0.3V to +44.0V COM_, IN_ (Note 1) ..............................(V- - 0.3V) to (V+ + 0.3V) NC_, NO_ (Note 2)..................................(V+ - 36V) to (V- + 36V) NC_, NO_ to COM_ .................................................-36V to +36V Continuous Current into Any Terminal..............................30mA Peak Current into Any Terminal (pulsed at 1ms, 10% duty cycle)...................................50mA Continuous Power Dissipation (TA = +70C) (Note 2) Plastic DIP (derate 10.53mW/C above +70C) ...........842mW Narrow SO (derate 8.70mW/C above +70C) .............696mW TSSOP (derate 9.4mW/C above +70C) ..................754.7mW CERDIP (derate 10.00mW/C above +70C) ................800mW Operating Temperature Ranges MAX451_C_ E ......................................................0C to +70C MAX451_E_ E ...................................................-40C to +85C MAX451_MJE .................................................-55C to +125C Storage Temperature Range .............................-65C to +150C Lead Temperature (soldering, 10s) .................................+300C Note 1: COM_ and IN_ pins are not fault protected. Signals on COM_ or IN_ exceeding V+ or V- are clamped by internal diodes. Limit forward diode current to maximum current rating. Note 2: NC_ and NO_ pins are fault protected. Signals on NC_ or NO_ exceeding -36V to +36V may damage the device. These limits apply with power applied to V+ or V-, or 40V with V+ = V- = 0. Stresses beyond those listed under "Absolute Maximum Ratings" may cause permanent damage to the device. These are stress ratings only, and functional operation of the device at these or any other conditions beyond those indicated in the operational sections of the specifications is not implied. Exposure to absolute maximum rating conditions for extended periods may affect device reliability. ELECTRICAL CHARACTERISTICS--Dual Supplies (V+ = +15V, V- = -15V, GND = 0V, TA = TMIN to TMAX, unless otherwise noted. Typical values are at TA = +25C.) PARAMETER SYMBOL CONDITIONS TA MIN TYP (Note 3) MAX UNITS ANALOG SWITCH Fault-Protected Analog Signal Range VNO_, VNC_ Applies with power on or off (Note 2) C, E, M -36 36 V Fault-Free Analog Signal Range VNO_, VNC_ Applies with power on or off (Note 2) C, E, M V- V+ V Non-Protected Analog Signal Range (COM_ Output) VCOM_ Applies with power on or off (Note 1) C, E, M V- - 0.3 V+ + 0.3 V COM_ -NO_ or COM_ -NC_ On-Resistance RON COM_ -NO_ or COM_ -NC_ On-Resistance Match Between Channels (Note 4) 125 VCOM_ = 10V, ICOM_ = 1mA NO_ or NC_ Off Leakage Current (Note 5) INO_(OFF), INC_(OFF) VCOM_ = 14V; VNO_, VCOM = 14V COM_ Off Leakage Current (Note 5) ICOM_(OFF) VCOM_ = 14V; VNO_, VCOM = 14V COM_ On Leakage Current (Note 5) ICOM_(ON) VCOM_ = 14V 160 C, E 200 M 250 +25C RON 2 +25C VCOM_ = 10V, ICOM_ = 1mA MAX4511/MAX4512/MAX4513 Quad, Rail-to-Rail, Fault-Protected, SPST Analog Switches 3 6 C, E 10 M 15 0.01 +25C -0.5 C, E -10 10 M -200 200 +25C -0.5 C, E -10 10 M -200 200 +25C -0.5 C, E -20 20 M -400 400 0.01 0.01 _______________________________________________________________________________________ 0.5 nA 0.5 nA 0.5 nA Quad, Rail-to-Rail, Fault-Protected, SPST Analog Switches (V+ = +15V, V- = -15V, GND = 0V, TA = TMIN to TMAX, unless otherwise noted. Typical values are at TA = +25C.) PARAMETER SYMBOL CONDITIONS TA MIN TYP (Note 3) MAX UNITS FAULT (V+ = +15V, V- = -15V, unless otherwise noted.) NO_ or NC_ Off Input Leakage Current, Supplies On NO_ or NC_ Input Leakage Current, Supplies Off ICOM_ INO_, INC_ INO_, INC_ COM_ On Output Current, Supplies On ICOM_ COM_ On Output Resistance, Supplies On RCOM_ VNO_ or VNC_ = 33V VNO_ or VNC_ = 25V, VCOM_ = 10V COM_ Output Leakage Current, Supplies On VNO_ or VNC_ = 40V, V+ = 0, V- = 0 VNO_ or VNC_ = 33V VNO_ or VNC_ = -33V VNO_ or VNC_ = 33V +25C -10 10 C, E -200 200 nA M -1 1 A +25C C, E -20 -200 20 200 nA M -10 +25C C, E -20 -200 M -10 +25C 10 A 0.1 20 200 nA 10 A 8 11 13 -12 -10 -7 1 2.5 +25C C, E, M 3 mA k LOGIC LOGIC INPUT INPUT IN_ Input Logic Threshold High VIN_H C, E, M IN_ Input Logic Threshold Low VIN_L C, E, M 0.8 1.9 +25C -1 0.03 C, E, M -5 IN_ Input Current Logic High or Low IINH_, IINL VIN_ = 0.8V or 2.4V 1.9 2.4 V V 1 5 A SWITCH SWITCH DYNAMIC DYNAMIC CHARACTERISTICS CHARACTurn-On Time tON Turn-Off Time tOFF Break-Before-Make Time Delay (MAX4513 Only) tBBM Charge Injection (Note 6) Q NO_ or NC_ Off-Capacitance VCOM_ = 10V, RL_ = 2k, Figure 2 VCOM_ = 10V, RL_ = 2k, Figure 2 +25C 350 500 C, E 600 M 900 +25C 200 400 C, E 500 M 750 VCOM_ = 10V, RL_ = 2k, Figure 3 +25C CL = 1.0nF, VNO_ = 0, RS = 0, Figure 4 +25C 1.5 50 ns 100 ns ns 5 pC CN_(OFF) f = 1MHz, Figure 5 +25C 10 pF COM_ Off-Capacitance CCOM_(OFF) f = 1MHz, Figure 5 +25C 5 pF COM_ On-Capacitance CCOM_(ON) f = 1MHz, Figure 5 +25C 10 pF VCISO RL = 50, CL = 15pF, VN_ = 1VRMS, f = 1MHz, Figure 6 +25C -62 dB VCT RL = 50, CL = 15pF, VN_ = 1VRMS, f = 1MHz, Figure 6 +25C -66 dB Off Isolation (Note 7) Channel-to-Channel Crosstalk (Note 9) _______________________________________________________________________________________ 3 MAX4511/MAX4512/MAX4513 ELECTRICAL CHARACTERISTICS--Dual Supplies (continued) MAX4511/MAX4512/MAX4513 Quad, Rail-to-Rail, Fault-Protected, SPST Analog Switches ELECTRICAL CHARACTERISTICS--Dual Supplies (continued) (V+ = +15V, V- = -15V, GND = 0V, TA = TMIN to TMAX, unless otherwise noted. Typical values are at TA = +25C.) PARAMETER SYMBOL CONDITIONS TA MIN TYP MAX (Note 3) UNITS POWER SUPPLY Power-Supply Range V+, V- C,E, M V+ Supply Current I+ All VIN_ = 0 or 5V V- Supply Current I- All VIN_ = 0 or 5V All VIN_ = 0 or 15V GND Supply Current IGND All VIN_ = 5V All VIN_ = 0 or 15V 4 4.5 +25C 18 280 C, E, M 600 +25C 90 C, E, M +25C 200 300 -1 0.01 C, E, M +25C 400 1 10 150 C, E, M _______________________________________________________________________________________ 250 450 V A A A A Quad, Rail-to-Rail, Fault-Protected, SPST Analog Switches (V+ = +10.8V to +13.2V, V- = 0, TA = TMIN to TMAX, unless otherwise noted. Typical values are at TA = +25C.) PARAMETER SYMBOL CONDITIONS TA MIN TYP MAX (Note 3) UNITS ANALOG SWITCH Fault-Protected Analog Signal Range VNO_, VNC_ Applies with power on or off (Note 2) C, E, M -36 36 V Fault-Free Analog Signal Range VNO_, VNC_ Applies with power on or off (Note 2) C, E, M 0 V+ V Non-Protected Analog Signal Range (COM_ Output) VCOM_ Applies with power on or off (Note 1) C, E, M -0.3 V+ + 0.3 V COM_ -NO_ or COM_ -NC_ On-Resistance RON COM_ -NO_ or COM_ -NC_ On-Resistance Match Between Channels (Note 4) NO_ or NC_ Off Leakage Current (Notes 5, 9) RON V+ = 12V, VCOM_ = 10V, ICOM_ = 1mA V+ = 12V, VCOM_ = 10V, ICOM_ = 1mA ION_(OFF), INC_(OFF) V+ = 12V; VCOM_ = 10V; VNO_, VNC = 0 or 12V COM_ Off Leakage Current (Notes 5, 9) ICOM_(OFF) V+ = 12V; VCOM _ = 0; VNO_, VNC_ = 12V COM_ On Leakage Current (Notes 5, 9) ICOM_(ON) V+ = 12V, VCOM_ = 10V or 12V +25C 260 390 C, E 450 M 525 +25C 4 10 C, E 20 M 30 0.01 +25C -0.5 C, E -10 10 M -200 200 +25C -0.5 0.01 0.5 nA 0.5 C, E -10 10 M -200 200 +25C -0.5 C, E -20 20 M -400 400 0.01 nA 0.5 nA FAULT COM_ Output Leakage Current, Supply On ICOM_ NO_ or NC_ Off Input Leakage Current, Supply On INO_, INC_ NO_ or NC_ Input Leakage Current, Supply Off INO_, INC_ VNO_ or VNC_ = 30V, V+ = 12V VNO_ or VNC_ = 25V, VCOM_ = 0, V+ = 12V VNO_ or VNC_ = 40V, V+ = 0, V- = 0 +25C -10 10 C, E -200 200 M -1 1 +25C -20 20 C, E -200 200 M -10 10 nA A -20 C, E -200 200 M -10 10 A 2 3 5 mA 2.4 5 k ICOM_ VNO_ or VNC_ = 25V, V+ = 12V +25C COM_ Output Resistance, Supply On RCOM_ VNO_ or VNC_ = 10V V+ = 12V +25C 20 A +25C COM_ Output Current, Supply On 0.1 nA nA _______________________________________________________________________________________ 5 MAX4511/MAX4512/MAX4513 ELECTRICAL CHARACTERISTICS--Single +12V Supply MAX4511/MAX4512/MAX4513 Quad, Rail-to-Rail, Fault-Protected, SPST Analog Switches ELECTRICAL CHARACTERISTICS--Single +12V Supply (continued) (V+ = +10.8V to +13.2V, V- = 0, TA = TMIN to TMAX, unless otherwise noted. Typical values are at TA = +25C.) PARAMETER SYMBOL CONDITIONS TA MIN TYP MAX (Note 3) UNITS LOGIC INPUT IN_ Input Logic Threshold High VIN_H C, E, M IN_ Input Logic Threshold Low VIN_L C, E, M 0.8 1.8 +25C -1 0.03 C, E, M -5 IN_ Input Current Logic High or Low IIN_H, IIN_L VIN_ = 0.8V or 2.4V 1.8 2.4 V V 1 5 A SWITCH DYNAMIC CHARACTERISTICS +25C 500 1000 Turn-On Time tON VCOM_ = 10V, RL_ = 2k, Figure 2 Turn-Off Time tOFF VCOM_ = 10V, RL_ = 2k, Figure 2 Break-Before-Make Time Delay (MAX4513 Only) tBBM VCOM_ = 10V, RL_ = 2k, Figure 3 +25C Charge Injection (Note 6) Q CL = 1.0nF, VNO_ = 0, RS = 0, Figure 4 +25C 1 f = 1MHz, Figure 5 +25C 9 pF +25C 9 pF NO_ or NC_ Off Capacitance CN_ (OFF) C, E, M 1500 +25C 400 C, E, M 900 1200 50 100 ns ns ns 5 pC COM_ Off Capacitance CCOM_ (OFF) VCOM_ = GND, f = 1MHz, Figure 5 COM_ On Capacitance CCOM_ (ON) VCOM_ = VNO_ = GND, f = 1MHz, Figure 5 +25C 22 pF Off Isolation (Note 7) VISO RL = 50, CL = 15pF, VN_ = 1VRMS, f = 1MHz, Figure 6 +25C -62 dB Channel-to-Channel Crosstalk (Note 8) VCT RL = 50, CL = 15pF, VN_ = 1VRMS, f = 1MHz, Figure 5 +25C -65 dB POWER SUPPLY Power-Supply Range V+ Supply Current V+ I+ C,E, M All VIN_ = 0 or 5V All VIN_ = 0 or 12V V- and GND Supply Current IGND All VIN_ = 5V Note 1: Note 2: Note 3: Note 4: Note 5: Note 6: Note 7: Note 8: Note 9: 6 +25C 9 36 150 C, E, M +25C 450 50 C, E, M +25C 300 100 200 150 C, E, M 300 V A A A 450 COM_ and IN_ pins are not fault protected. Signals on COM_ or IN_ exceeding V+ or V- are clamped by internal diodes. Limit forward diode current to maximum current rating. NC_ and NO_ pins are fault protected. Signals on NC_ or NO_ exceeding -36V to +36V may damage the device. These limits apply with power applied to V+ or V-, or 40V with V+ = V- = 0. The algebraic convention is used in this data sheet; the most negative value is shown in the minimum column. RON = RON(MAX) - RON(MIN). Leakage parameters are 100% tested at maximum rated hot temperature and guaranteed by correlation at TA = +25C. Guaranteed by design. Off isolation = 20 log10 [ VCOM_ / (VNC_ or VNO_) ], VCOM_ = output, VNC_ or VNO_ = input to off switch. Between any two switches. Leakage testing for single-supply operation is guaranteed by testing with dual supplies. _______________________________________________________________________________________ Quad, Rail-to-Rail, Fault-Protected, SPST Analog Switches SWITCH ON-RESISTANCE vs. VCOM AND TEMPERATURE (DUAL SUPPLIES) 200 150 100 V+ = +15V V- = -15V 50 V+ = +20V V- = -20V 120 100 80 60 TA = -55C -15 -10 -5 0 5 10 15 40 V- = 0 V+ = +5V V+ = +15V V+ = +20V V+ = +24V V+ = +12V V+ = +30V V+ = +15V V- = -15V 100 -15 20 -10 -5 0 5 10 15 0 5 10 15 20 25 VCOM (V) VCOM (V) VCOM (V) SWITCH ON-RESISTANCE vs. VCOM AND TEMPERATURE (SINGLE SUPPLY) ID(ON), IS(OFF), AND ID(OFF) LEAKAGES vs. TEMPERATURE CHARGE INJECTION vs. VCOM (DUAL SUPPLIES) ICOM(OFF) @VNO = -14V, VCOM = +14V 10n 300 LEAKAGE (A) TA = +25C TA = -40C 250 200 150 1n 10 ICOM(ON) @VNO = VCOM = -14V ICOM(ON) @VNO = VCOM = +14V 100p 50 0 2 4 6 8 10 12 0 25 50 75 -10 -5 0 5 10 VCOM (V) ON AND OFF TIMES vs. SUPPLY VOLTAGE ON AND OFF TIMES vs. TEMPERATURE POWER-SUPPLY CURRENT vs. TEMPERATURE 600 500 400 tOFF (SINGLE SUPPLY) 300 200 tOFF (DUAL SUPPLIES) 400 300 200 5 10 15 SUPPLY VOLTAGE (V) 20 400 100 15 IV+ 300 IGND 200 IV- tOFF 100 0 0 500 tON SUPPLY CURRENT (A) 700 500 tON, tOFF (ns) tON (SINGLE SUPPLY) 600 MAX4511-08 600 MAX4511-07 tON (DUAL SUPPLIES) 0 -15 100 125 150 TEMPERATURE (C) 900 100 -25 VCOM (V) 1000 800 -50 SINGLE +12V SUPPLY 0 1p 0 6 2 INO(OFF) @VNO = +14V, VCOM = -14V V+ = +12V DUAL 15V SUPPLIES 8 4 INO(OFF) @VNO = -14V, VCOM = +14V 10p V+ = +15V V- = -15V 12 ICOM(OFF) @VNO = +14V, VCOM = -14V TA = -55C 100 14 MAX4511-06 100n 30 MAX4511-09 350 TA = +85C Q (pC) TA = +125C MAX4511-04 400 tON, tOFF (ns) TA = +25C TA = -40C 1000 MAX4511-02 140 0 -20 SWITCH ON-RESISTANCE () 160 20 0 TA = +85C SWITCH ON-RESISITANCE () V+ = +12V V- = -12V V+ = +10V V- = -10V TA = +125C MAX4511-05 SWITCH ON-RESISTANCE () 250 180 SWITCH ON-RESISTANCE () V+ = +5V V- = -5V 300 200 MAX4511-01 350 SWITCH ON-RESISTANCE vs. VCOM (SINGLE SUPPLY) MA4511-03 SWITCH ON-RESISTANCE vs. VCOM (DUAL SUPPLIES) 0 -50 -25 0 25 50 75 TEMPERATURE (C) 100 125 -50 -25 0 25 50 75 100 125 TEMPERATURE (C) _______________________________________________________________________________________ 7 MAX4511/MAX4512/MAX4513 __________________________________________Typical Operating Characteristics (TA = +25C, unless otherwise noted.) Typical Operating Characteristics (continued) (TA = +25C, unless otherwise noted.) LOGIC-LEVEL THRESHOLD vs. V+ FREQUENCY RESPONSE -20 2.0 80 60 OFF LOSS LOSS (dB) -40 1.5 1.0 40 -50 20 -60 0 -70 -20 -80 -40 ON PHASE -90 0 -60 -100 -80 -110 -100 -120 0 5 10 15 20 25 30 35 V+ (V) 120 100 ON LOSS -30 0.5 -120 0.01 0.1 1 10 100 1000 FREQUENCY (MHz) Pin Description Detailed Description Overview of Traditional Fault-Protected Switches PIN NAME FUNCTION 1, 16, 9, 8 IN1-IN4 Logic Control Digital Inputs 2, 15, 10, 7 COM1- COM4 Analog Switch Common* Terminals 3, 14, NO1-NO4 Analog Switch Fault-Protected Normally or 11, 6 NC1-NC4 Open* or Normally Closed* Terminals 4 V- Negative Analog Supply Voltage Input. Connect to GND for single-supply operation. 5 GND Ground. Connect to digital ground. (Analog signals have no ground reference.) 12 N.C. No Connection--not internally connected 13 V+ Positive Analog and Digital Supply-Voltage Input. Internally connected to substrate. *As long as the voltage on NO_ or NC_ does not exceed V+ or V-, NO_ (or NC_) and COM_ pins are identical and interchangeable. Either may be considered as an input or output; signals pass equally well in either direction. 8 -10 PHASE (DEGREES) 2.5 MAX186-14A 0 MAX4511-10 3.0 LOGIC-LEVEL THRESHOLD (V) MAX4511/MAX4512/MAX4513 Quad, Rail-to-Rail, Fault-Protected, SPST Analog Switches The MAX4511/MAX4512/MAX4513 are fault-protected CMOS analog switches with unusual operation and construction. Traditional fault-protected switches are constructed by three series FETs. This produces good off characteristics, but fairly high on-resistance when the signals are within about 3V of each supply rail. As the voltage on one side of the switch approaches within about 3V of either supply rail (a fault condition), the switch impedance becomes higher, limiting the output signal range (on the protected side of the switch) to approximately 3V less than the appropriate polarity supply voltage. During a fault condition, the output current that flows from the protected side of the switch into its load comes from the fault source on the other side of the switch. If the switch is open or the load is extremely high impedance, the input current will be very low. If the switch is on and the load is low impedance, enough current will flow from the source to maintain the load voltage at 3V less than the supply. _______________________________________________________________________________________ Quad, Rail-to-Rail, Fault-Protected, SPST Analog Switches MAX4511/MAX4512/MAX4513 NORMALLY OPEN SWITCH CONSTRUCTION V+ P2 HIGH FAULT P1 COM_ NO_ (NC_) N1 LOW FAULT ON IN_ GND N2 V-ESD DIODE NC SWITCH Figure 1. Block Diagram Overview of MAX4511/MAX4512/MAX4513 The MAX4511/MAX4512/MAX4513 differ considerably from traditional fault-protection switches, with several advantages. First, they are constructed with two parallel FETs, allowing very low on-resistance when the switch is on. Second, they allow signals on the NC_ or NO_ pins that are within or slightly beyond the supply rails to be passed through the switch to the COM terminal, allowing rail-to-rail signal operation. Third, when a signal on NC_ or NO_ exceeds the supply rails by about 50mV (a fault condition), the voltage on COM_ is limited to the appropriate polarity supply voltage. Operation is identical for both fault polarities. The faultprotection extends to 36V from GND. During a fault condition, the NO_ or NC_ input pin becomes high impedance regardless of the switch state or load resistance. If the switch is on, the COM_ output current is furnished from the V+ or V- pin by "booster" FETs connected to each supply pin. These FETs can typically source or sink up to 10mA. When power is removed, the fault protection is still in effect. In this case, the NO_ or NC_ terminals are a virtual open circuit. The fault can be up to 40V. The COM_ pins are not fault protected; they act as normal CMOS switch pins. If a voltage source is connected to any COM_ pin, it should be limited to the supply voltages. Exceeding the supply voltage will cause high currents to flow through the ESD protection diodes, possibly damaging the device (see Absolute Maximum Ratings). Pin Compatibility These switches have identical pinouts to common nonfault-protected CMOS switches. Care should be exercised in considering them for direct replacements in existing printed circuit boards, however, since only the NO_ and NC_ pins of each switch are fault protected. Internal Construction Internal construction is shown in Figure 1, with the analog signal paths shown in bold. A single normally open _______________________________________________________________________________________ 9 MAX4511/MAX4512/MAX4513 Quad, Rail-to-Rail, Fault-Protected, SPST Analog Switches (NO) switch is shown; the normally closed (NC) configuration is identical except the logic-level translator becomes an inverter. The analog switch is formed by the parallel combination of N-channel FET N1 and Pchannel FET P1, which are driven on and off simultaneously according to the input fault condition and the logic-level state. Normal Operation Two comparators continuously compare the voltage on the NO_ (or NC_) pin with V+ and V-. When the signal on NO_ or NC_ is between V+ and V- the switch acts normally, with FETs N1 and P1 turning on and off in response to IN_ signals. The parallel combination of N1 and P1 forms a low-value resistor between NO_ (or NC_) and COM_ so that signals pass equally well in either direction. COM_ and IN_ Pins FETs N2 and P2 can source about 10mA from V+ or Vto the COM_ pin in the fault condition. Ensure that if the COM_ pin is connected to a low-resistance load, the absolute maximum current rating of 30mA is never exceeded, both in normal and fault conditions. The GND, COM_, and IN_ pins do not have fault protection. Reverse ESD-protection diodes are internally connected between GND, COM_, IN_ and both V+ and V-. If a signal on GND, COM_, or IN_ exceeds V+ or V- by more than 300mV, one of these diodes will conduct heavily. During normal operation these reverse-biased ESD diodes leak a few nanoamps of current to V+ and V-. Fault-Protection Voltage and Power Off The maximum fault voltage on the NC_ or NO_ pins is 36V with power applied and 40V with power off. Positive Fault Condition When the signal on NO_ (or NC_) exceeds V+ by about 50mV, the high-fault comparator output is high, turning off FETs N1 and P1. This makes the NO_ (or NC_) pin high impedance regardless of the switch state. If the switch state is "off", all FETs are turned off and both NO_ (or NC_) and COM_ are high impedance. If the switch state is "on", FET P2 is turned on, sourcing current from V+ to COM_. Negative Fault Condition When the signal on NO_ (or NC_) exceeds V- by about 50mV, the low-fault comparator output is high, turning off FETs N1 and P1. This makes the NO_ (or NC_) pin high impedance regardless of the switch state. If the switch state is "off," all FETs are turned off and both NO_ (or NC_) and COM_ are high impedance. If the switch state is "on," FET N2 is turned on, sinking current from COM_ to V-. Transient Fault Response and Recovery When a fast rise-time and fall-time transient on IN_ exceeds V+ or V-, the output (COM_) follows the input (IN_) to the supply rail with only a few nanoseconds delay. This delay is due to the switch on-resistance and circuit capacitance to ground. When the input transient returns to within the supply rails, however, there is a longer output recovery time delay. For positive faults, the recovery time is typically 3.5s. For negative faults, the recovery time is typically 1.3s. These values depend on the COM_ output resistance and capacitance, and are not production tested or guaranteed. The delays are not dependent on the fault amplitude. Higher COM_ output resistance and capacitance increase recovery times. 10 Failure Modes The MAX4511/MAX4512/MAX4513 are not lightning arrestors or surge protectors. Exceeding the fault-protection voltage limits on NO_ or NC_, even for very short periods, can cause the device to fail. The failure modes may not be obvious, and failure in one switch may or may not affect other switches in the same package. Ground There is no connection between the analog signal paths and GND. The analog signal paths consist of an N-channel and P-channel MOSFET with their sources and drains paralleled and their gates driven out of phase to V+ and V- by the logic-level translators. V+ and GND power the internal logic and logic-level translators and set the input logic thresholds. The logiclevel translators convert the logic levels to switched V+ and V- signals to drive the gates of the analog switches. This drive signal is the only connection between the power supplies and the analog signals. GND, IN_, and COM_ have ESD-protection diodes to V+ and V-. IN_ Logic-Level Thresholds The logic-level thresholds are CMOS and TTL compatible when V+ is +15V. As V+ is raised the threshold increases slightly, and when V+ reaches 25V the level threshold is about 2.8V--above the TTL output high level minimum of 2.4V, but still compatible with CMOS outputs (see Typical Operating Characteristics). Increasing V- has no effect on the logic-level thresholds, but it does increase the gate-drive voltage to the signal FETs, reducing their on-resistance. ______________________________________________________________________________________ Quad, Rail-to-Rail, Fault-Protected, SPST Analog Switches Single Supply The MAX4511/MAX4512/MAX4513 operate from a single supply between +9V and +36V when V- is connected to GND. High-Frequency Performance 20MHz, the on-response has several minor peaks that are highly layout dependent. The problem with high-frequency operation is not turning the switch on, but turning it off. The off-state switch acts like a capacitor and passes higher frequencies with less attenuation. At 10MHz, off isolation is about -42dB in 50 systems, becoming worse (approximately 20dB per decade) as frequency increases. Higher circuit impedances also make off isolation worse. Adjacent channel attenuation is about 3dB above that of a bare IC socket and is due entirely to capacitive coupling. In 50 systems, signal response is reasonably flat up to 50MHz (see Typical Operating Characteristics). Above Test Circuits/Timing Diagrams V+ V+ V+ NO_ OR NC_ VIN_ +10V 50% 0V VIN_ IN_ MAX4511 MAX4512 MAX4513 COM_ GND 50 V- +10V 90% VOUT 2k VOUT 10pF 90% 0V V- tON tOFF V- IS CONNECTED TO GND (0V) FOR SINGLE-SUPPLY OPERATION. Figure 2. Switch Turn-On/Turn-Off Times V+ VIN_ VIN_ V+ NO_ IN_ +10V 50% 0V NC_ IN_ 50 tR < 5ns tF < 5ns V+ VNO_, VNC_ MAX4513 COM_ 80% VOUT COM_ GND V2k V- 10pF VOUT 0V tOPEN V- IS CONNECTED TO GND (0V) FOR SINGLE-SUPPLY OPERATION. Figure 3. MAX4513 Break-Before-Make Interval ______________________________________________________________________________________ 11 MAX4511/MAX4512/MAX4513 Bipolar Supplies The MAX4511/MAX4512/MAX4513 operate with bipolar supplies between 4.5V and 18V. The V+ and V- supplies need not be symmetrical, but their difference can not exceed the absolute maximum rating of 44V. MAX4511/MAX4512/MAX4513 Quad, Rail-to-Rail, Fault-Protected, SPST Analog Switches Test Circuits/Timing Diagrams (continued) V+ V+ V+ VIN_ IN_ 50 NO_ OR NC_ VIN_ 0V MAX4511 MAX4512 MAX4513 VOUT COM_ GND VOUT VOUT CL 1000pF V- V- VOUT IS THE MEASURED VOLTAGE DUE TO CHARGETRANSFER ERROR Q WHEN THE CHANNEL TURNS OFF. Q = VOUT x CL V- IS CONNECTED TO GND (0V) FOR SINGLE-SUPPLY OPERATION. Figure 4. Charge Injection V+ V+ NO_ V+ ADDRESS SELECT IN_ MAX4511 MAX4512 MAX4513 GND NC_ COM_ 1MHz CAPACITANCE ANALYZER V- VV- IS CONNECTED TO GND (0V) FOR SINGLE-SUPPLY OPERATION. Figure 5. COM_, NO_, NC_ Capacitance 12 ______________________________________________________________________________________ Quad, Rail-to-Rail, Fault-Protected, SPST Analog Switches V+ 10nF NETWORK ANALYZER V+ VIN 50 50 COM_ MAX4511 MAX4512 MAX4513 IN_ ADDRESS SELECT VOUT NO_, NC_ V- GND MEAS. REF. 50 OFF ISOLATION = 20 log VOUT VIN ON LOSS = 20 log VOUT VIN CROSSTALK = 20 log VOUT VIN 50 10nF V- MEASUREMENTS ARE STANDARDIZED AGAINST SHORT AT SOCKET TERMINALS. OFF ISOLATION IS MEASURED BETWEEN COM_ AND "OFF" NO_ OR NC_ TERMINALS. ON LOSS IS MEASURED BETWEEN COM_ AND "ON" NO_ OR NC_ TERMINALS. CROSSTALK IS MEASURED BETWEEN COM_ TERMINALS WITH ALL SWITCHES ON. SIGNAL DIRECTION THROUGH SWITCH IS REVERSED; WORST VALUES ARE RECORDED. V- IS CONNECTED TO GND (0V) FOR SINGLE-SUPPLY OPERATION. Figure 6. Frequency Response, Off Isolation, and Crosstalk Pin Configurations/Functional Diagrams/Truth Tables (continued) TOP VIEW IN1 1 16 IN2 COM1 2 15 COM2 NO1 3 V- 4 14 NO2 16 IN2 COM1 2 15 COM2 NO1 3 14 NC2 V- 4 12 N.C. 5 NO4 6 11 NC3 COM4 7 10 COM3 IN4 8 GND 5 NO4 6 11 NO3 COM4 7 10 COM3 IN4 1 GND 13 V+ MAX4512 IN1 9 8 IN3 0 1 OFF ON 12 N.C. 9 IN3 DIP/SO DIP/SO MAX4512 LOGIC SWITCH 13 V+ MAX4513 LOGIC 0 1 MAX4513 SWITCHES 1, 4 SWITCHES 2, 3 OFF ON ON OFF N.C. = NOT CONNECTED SWITCHES SHOWN FOR LOGIC "0" INPUT. ALL SWITCHES ARE OFF WITH POWER REMOVED. ______________________________________________________________________________________ 13 MAX4511/MAX4512/MAX4513 Test Circuits/Timing Diagrams (continued) Quad, Rail-to-Rail, Fault-Protected, SPST Analog Switches MAX4511/MAX4512/MAX4513 Chip Topographies MAX4511 NC1 COM1 IN1 IN2 COM2 NC2 V+ V- 0.138" (3.51mm) GND NC4 NC3 Ordering Information (continued) PART MAX4512CPE MAX4512CSE MAX4512CUE MAX4512C/D MAX4512EPE MAX4512ESE MAX4512EUE MAX4512MJE MAX4513CPE MAX4513CSE MAX4513CUE MAX4513C/D MAX4513EPE MAX4513ESE MAX4513EUE MAX4513MJE TEMP RANGE 0C to +70C 0C to +70C 0C to +70C 0C to +70C -40C to +85C -40C to +85C -40C to +85C -55C to +125C 0C to +70C 0C to +70C 0C to +70C 0C to +70C -40C to +85C -40C to +85C -40C to +85C -55C to +125C PIN-PACKAGE 16 Plastic DIP 16 Narrow SO 16 TSSOP Dice* 16 Plastic DIP 16 Narrow SO 16 TSSOP 16 CERDIP 16 Plastic DIP 16 Narrow SO 16 TSSOP Dice* 16 Plastic DIP 16 Narrow SO 16 TSSOP 16 CERDIP * Contact factory for dice specifications. COM4 IN4 IN3 COM3 0.086" (2.261mm) MAX4513 MAX4512 NO1 COM1 NO1 COM1 IN1 IN2 COM2 NO2 IN1 IN2 COM2 NC2 V+ V+ V- 0.138" (3.51mm) GND NO4 COM4 IN4 IN3 COM3 NO3 0.086" (2.261mm) V- 0.138" (3.51mm) GND NO4 COM4 IN4 IN3 COM3 NC3 0.086" (2.261mm) TRANSISTOR COUNT: 139 SUBSTRATE CONNECTED TO: V+ 14 ______________________________________________________________________________________ Quad, Rail-to-Rail, Fault-Protected, SPST Analog Switches N E H INCHES MILLIMETERS MAX MIN 0.069 0.053 0.010 0.004 0.014 0.019 0.007 0.010 0.050 BSC 0.150 0.157 0.228 0.244 0.016 0.050 MAX MIN 1.35 1.75 0.10 0.25 0.35 0.49 0.19 0.25 1.27 BSC 3.80 4.00 5.80 6.20 0.40 SOICN .EPS DIM A A1 B C e E H L 1.27 VARIATIONS: 1 INCHES TOP VIEW DIM D D D MIN 0.189 0.337 0.386 MAX 0.197 0.344 0.394 MILLIMETERS MIN 4.80 8.55 9.80 MAX 5.00 8.75 10.00 N MS012 8 AA 14 AB 16 AC D A B e C 0 -8 A1 L FRONT VIEW SIDE VIEW PROPRIETARY INFORMATION TITLE: PACKAGE OUTLINE, .150" SOIC APPROVAL DOCUMENT CONTROL NO. 21-0041 REV. B 1 1 ______________________________________________________________________________________ 15 MAX4511/MAX4512/MAX4513 Package Information (The package drawing(s) in this data sheet may not reflect the most current specifications. For the latest package outline information, go to www.maxim-ic.com/packages.) Package Information (continued) 16 ______________________________________________________________________________________ CDIPS.EPS (The package drawing(s) in this data sheet may not reflect the most current specifications. For the latest package outline information, go to www.maxim-ic.com/packages.) PDIPN.EPS MAX4511/MAX4512/MAX4513 Quad, Rail-to-Rail, Fault-Protected, SPST Analog Switches Quad, Rail-to-Rail, Fault-Protected, SPST Analog Switches TSSOP4.40mm.EPS Maxim cannot assume responsibility for use of any circuitry other than circuitry entirely embodied in a Maxim product. No circuit patent licenses are implied. Maxim reserves the right to change the circuitry and specifications without notice at any time. Maxim Integrated Products, 120 San Gabriel Drive, Sunnyvale, CA 94086 408-737-7600______________________17 (c) 2002 Maxim Integrated Products Printed USA is a registered trademark of Maxim Integrated Products. MAX4511/MAX4512/MAX4513 Package Information (continued) (The package drawing(s) in this data sheet may not reflect the most current specifications. For the latest package outline information, go to www.maxim-ic.com/packages.)