19-0350; Rev 0; 12/94 Precision, Dual-Supply, SPST Analog Switches ________________________Applications Battery-Operated Systems Sample-and-Hold Circuits Heads-Up Displays Guidance and Control Systems Audio and Video Switching Military Radios Test Equipment Communications Systems 5V DACs and ADCs PBX, PABX ____________________________Features Low On-Resistance, 35 max (16 typical) RON Matching Between Channels <2 RON Flatness <4 Guaranteed Charge Injection <5pC Bipolar Supply Operation (3V to 8V) Low Power Consumption, <1.25mW Low Leakage Current Over Temperature, <2.5nA at +85C Fast Switching, tON <150ns, tOFF <100ns Guaranteed Break-Before-Make (MAX322 only) ______________Ordering Information PART TEMP. RANGE PIN-PACKAGE MAX320CPA 0C to +70C 8 Plastic DIP MAX320CSA 0C to +70C 8 SO MAX320CUA 0C to +70C 8 MAX MAX320C/D 0C to +70C Dice* MAX320EPA -40C to +85C 8 Plastic DIP MAX320ESA -40C to +85C 8 SO MAX320EJA -40C to +85C 8 CERDIP** MAX320MJA -55C to +125C 8 CERDIP** Ordering Information continued at end of data sheet. * Contact factory for dice specifications. ** Contact factory for availability. _____________________Pin Configurations/Functional Diagrams/Truth Tables TOP VIEW MAX320 MAX321 NO1 1 8 COM1 2 7 IN1 IN2 3 6 COM2 V- 4 5 NO2 V+ MAX322 NC1 1 8 COM1 2 7 IN1 IN2 3 6 COM2 V- 4 5 NC2 DIP/SO/MAX DIP/SO/MAX MAX320 LOGIC SWITCH MAX321 LOGIC SWITCH 0 1 OFF ON 0 1 V+ ON OFF NO1 1 8 V+ COM1 2 7 IN1 IN2 3 6 COM2 V- 4 5 NC2 DIP/SO/MAX LOGIC MAX322 SWITCH 1 SWITCH 2 0 1 OFF ON ON OFF SWITCHES SHOWN FOR LOGIC "0" INPUT ________________________________________________________________ Maxim Integrated Products Call toll free 1-800-998-8800 for free samples or literature. 1 MAX320/MAX321/MAX322 _______________General Description The MAX320/MAX321/MAX322 are precision, dual, SPST analog switches designed to operate from 3V to 8V dual supplies. The MAX320 has two normally open (NO) switches and the MAX321 has two normally closed (NC) switches. The MAX322 has one NO and one NC switch. Low power consumption (1.25mW) makes these parts ideal for battery-powered equipment. They offer low leakage currents (100pA max) and fast switching speeds (tON = 150ns max, tOFF = 100ns max). The MAX320 series, powered from 5V supplies, offers 35 max on-resistance (R ON ), 2 max matching between channels, and 4 max RON flatness. These switches also offer 5pC max charge injection and a minimum of 2000V ESD protection per Method 3015.7. For equivalent devices specified for single-supply operation, see the MAX323/MAX324/MAX325 data sheet. For quad versions of these switches, see the MAX391/MAX392/MAX393 data sheet. ABSOLUTE MAXIMUM RATINGS Voltage Referenced to VV+ ................................................................(V- - 0.3V) to +17V IN_, COM_, NC_, NO_ (Note 1) .........(V- - 0.3V) to (V+ + 0.3V) Continuous Current (any terminal) ......................................30mA Peak Current, COM_, NO_, NC_ (pulsed at 1ms, 10% duty cycle max) ..............................100mA ESD per Method 3015.7 ..................................................>2000V Continuous Power Dissipation Plastic DIP (derate 9.09mW/C above +70C) .............727mW Narrow SO (derate 5.88mW/C above +70C) .............471mW MAX (derate 4.10mW/C above +70C) .....................330mW CERDIP (derate 8.00mW/C above +70C) ..................640mW Operating Temperature Ranges MAX32_C_ _ ........................................................0C to +70C MAX32_E_ _......................................................-40C to +85C MAX32_MJA ...................................................-55C to +125C Storage Temperature Range .............................-65C to +150C Lead Temperature (soldering, 10sec) .............................+300C Note 1: Signals on NC_, NO_, COM_, or IN_ exceeding V+ or V- are clamped by internal diodes. Limit forward diode current to maximum current rating. 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 (V+ = +5V 10%, V- = -5V 10%, VINH = 3.5V, VINL = 2.5V, TA = TMIN to TMAX, unless otherwise noted.) PARAMETER SYMBOL MIN CONDITIONS TYP (Note 2) MAX UNITS ANALOG SWITCH Analog Signal Range On-Resistance On-Resistance Match Between Channels (Note 4) On-Resistance Flatness (Note 5) NO or NC Off Leakage Current (Note 6) VCOM, VNO, VNC RON RON (Note 3) V- V+ = 4.5V, V- = -4.5V, ICOM = 1.0mA, VNO or VNC = 3.5V V+ = 5V, V- = -5V, ICOM = 1.0mA, VNO or VNC = 3V V+ = 5V, V- = -5V, RFLAT(ON) ICOM = 1.0mA, VNO or VNC = 3V INO(OFF) or INC(OFF) V+ = 5.5V, V- = -5.5V, VCOM = 4.5V, VNO or VNC = 4.5V COM Off Leakage Current (Note 6) ICOM(OFF) V+ = 5.5V, V- = -5.5V, VCOM = 4.5V, VNO or VNC = 4.5V COM On Leakage Current (Note 6) ICOM(ON) V+ = 5.5V, V- = -5.5V, VCOM = 4.5V, VNO or VNC = 4.5V MAX320/MAX321/MAX322 Precision, Dual-Supply, SPST Analog Switches 2 TA = +25C V+ C, E 16 35 M 16 30 TA = TMIN to TMAX V 45 TA = +25C 0.3 TA = TMIN to TMAX 2 4 TA = +25C 1 TA = TMIN to TMAX 4 6 TA = +25C -0.1 TA = TMIN C, E to TMAX M -5 -40 TA = +25C -0.1 TA = TMIN C, E to TMAX M -5 -40 TA = +25C -0.2 TA = TMIN C, E to TMAX M -10 -50 0.01 0.1 5 40 0.01 0.1 5 40 0.05 _______________________________________________________________________________________ nA nA 0.2 10 50 nA Precision, Dual-Supply, SPST Analog Switches (V+ = +5V 10%, V- = -5V 10%, VINH = 3.5V, VINL = 2.5V, TA = TMIN to TMAX, unless otherwise noted.) PARAMETER SYMBOL CONDITIONS MIN TYP (Note 2) MAX UNITS LOGIC INPUT Input Current with Input Voltage High IINH -0.5 0.005 0.5 A Input Current with Input Voltage Low IINL -0.5 0.005 0.5 A Input Voltage High VINH Input Voltage Low VINL V+ = 5V 10%, V- 0V 3.5 3V < V+ < 8V, V- 0V V V+ - 1.5 V+ = 5V 10%, V- 0V 2.5 3V < V+ < 8V, V- 0V V+ - 2.5 V DYNAMIC Turn-On Time tON VCOM = 3V, Figure 2 Turn-Off Time tOFF VCOM = 3V, Figure 2 65 TA = +25C TA = TMIN to TMAX 150 175 TA = +25C 35 TA = TMIN to TMAX 100 150 ns ns Break-Before-Make Time Delay (Note 3) tD MAX322 only, RL = 300, CL = 35pF, Figure 3 Charge Injection (Note 3) Q CL = 1.0nF, VGEN = 0V, RGEN = 0, Figure 4 TA = +25C 2 RL = 50, CL = 5pF, f = 1MHz, Figure 5 TA = +25C 72 dB RL = 50, CL = 5pF, f = 1MHz, Figure 6 TA = +25C 85 dB Off Isolation (Note 7) OIRR Crosstalk (Note 8) NC or NO Capacitance C(OFF) 2 5 ns 5 pC f = 1MHz, Figure 7 TA = +25C 9 pF COM Off Capacitance CCOM(OFF) f = 1MHz, Figure 7 TA = +25C 9 pF COM On Capacitance CCOM(ON) f = 1MHz, Figure 8 TA = +25C 22 pF SUPPLY Power-Supply Range Positive Supply Current Negative Supply Current Note 2: Note 3: Note 4: Note 5: Note 6: Note 7: Note 8: 2.7 I+ I- V+ = 5.5V, V- = -5.5V, VIN = 0V or V+, all channels on or off TA = +25C -125 TA = TMIN to TMAX -200 V+ = 5.5V, V- = -5.5V, VIN = 0V or V+, all channels on or off TA = +25C -125 TA = TMIN to TMAX -200 8 80 V 125 A 200 80 125 A 200 The algebraic convention where the most negative value is a minimum and the most positive value a maximum is used in this data sheet. Guaranteed by design. RON = RON max - RON min. Flatness is defined as the difference between the maximum and minimum value of on-resistance as measured over the specified analog signal range. Leakage parameters are 100% tested at maximum rated hot temperature and guaranteed by correlation at +25C. Off Isolation = 20 log10 [ VCOM (VNC or VNO) ], VCOM = output, VNC or VNO = input to off switch. Between any two switches. _______________________________________________________________________________________ 3 MAX320/MAX321/MAX322 ELECTRICAL CHARACTERISTICS __________________________________________Typical Operating Characteristics (V+ = +5V, V- = -5V, TA = +25C, unless otherwise noted.) A 25 B 0.35 20 15 C RON () V = 5V RON () RON () 20 15 D 10 10 V = 8V A: B: C: D: 5 5 0 0 -6 -4 -2 0 2 4 6 -5 -4 -3 8 -2 -1 ON LEAKAGE CURRENT vs. TEMPERATURE 2 3 0.20 0 -5 0.1 0.01 0.001 -1 -3 1 3 5 VCOM (V) CHARGE INJECTION vs. VOLTAGE AT COM PIN V+ = +5.5V, V- = -5.5V VCOM = 4.5V VNC or VNO = 4.5V 20 15 10 1 5 Q (pC) 1 10 A 0.05 4 5 100 OFF LEAKAGE CURRENT (nA) V+ = +5.5V, V- = -5.5V VCOM = 4.5V, VNC or VNO = 4.5V D B C 0.10 OFF LEAKAGE CURRENT vs. TEMPERATURE MAX320-04 100 ON LEAKAGE CURRENT (nA) 1 0.25 VCOM (V) VCOM (V) 10 0 TA = -55C TA = +25C TA = +85C TA = +125C 0.30 0.15 TA = +125C TA = +85C TA = +25C TA = -55C MAX320-05 -8 A: B: C: D: 0.40 MAX320-06 25 0.50 0.45 MAX320-03 30 MAX320-02 MAX320-01 V = 3V ON-RESISTANCE MATCH vs. VOLTAGE AT COM PIN (OVER TEMPERATURE) ON-RESISTANCE vs. VOLTAGE AT COM PIN (OVER TEMPERATURE) ON-RESISTANCE vs. VOLTAGE AT COM PIN 30 0.1 0 -5 0.01 -10 0.001 -15 0.0001 -20 0.0001 -55 -35 -15 5 25 45 65 85 105 125 -55 -35 -15 TEMPERATURE (C) 5 25 45 65 85 105 125 -5 -4 -3 -2 -1 SUPPLY CURRENT vs. TEMPERATURE MAX320-07 140 120 100 80 60 40 20 0 -55 -35 -15 5 25 45 65 85 105 125 TEMPERATURE (C) 4 0 1 VCOM (V) TEMPERATURE (C) ISUPPLY (A) MAX320/MAX321/MAX322 Precision, Dual-Supply, SPST Analog Switches _______________________________________________________________________________________ 2 3 4 5 Precision, Dual-Supply, SPST Analog Switches POSITIVE SUPPLY PIN NAME FUNCTION D1 NO1 (MAX320/MAX322) Normally Open Analog Switch Terminal V+ 1 NC1 (MAX321) Normally Closed Analog Switch Terminal 2, 6 COM1, COM2 Analog Switch Common Terminals 3, 7 IN2, IN1 4 V- Negative Supply Normally Open Analog Switch Terminal 5 NC2 (MAX321/MAX322) V+ COM Logic Inputs NO2 (MAX320) 8 NO Vg Normally Closed Analog Switch Terminal Positive Supply __________Applications Information Logic Levels Calculate the logic thresholds typically as follows: VIH = (V+ - 1.5V) and VIL = (V+ - 2.5V). Power-supply consumption is minimized when IN1 and IN2 are driven with logic-high levels equal to V+ and logiclow levels well below the calculated VIL of (V+ - 2.5V). IN1 and IN2 can be driven to V- without damage. Analog Signal Levels Analog signals that range over the entire supply voltage (V- to V+) can be switched, with very little change in onresistance over the entire voltage range (see Typical Operating Characteristics). All switches are bidirectional, so NO_, NC_, and COM_ pins can be used as either inputs or outputs. Power-Supply Sequencing and Overvoltage Protection Do not exceed the absolute maximum ratings, because stresses beyond the listed ratings may cause permanent damage to the devices. Proper power-supply sequencing is recommended for all CMOS devices. Always apply V+, followed by V-, before applying analog signals or logic inputs, especially if the analog or logic signals are not current-limited. If VD2 NEGATIVE SUPPLY MAX320 MAX321 MAX322 Figure 1. Overvoltage Protection Using Two External Blocking Diodes this sequencing is not possible, and if the analog or logic inputs are not current-limited to <30mA, add two small signal diodes (D1, D2) as shown in Figure 1. Adding protection diodes reduces the analog signal range to a diode drop (about 0.7V) below V+ for D1, and a diode drop above V- for D2. Leakage is not affected by adding the diodes. On-resistance increases by a small amount at low supply voltages. Maximum supply voltage (V- to V+) must not exceed 17V. Adding protection diode D1 causes the logic thresholds to be shifted relative to the positive power-supply rail. This can be significant when low positive supply voltages (+5V or less) are used. Driving IN1 and IN2 all the way to the supply rails (i.e., to a diode drop higher than the V+ pin or a diode drop lower than the V- pin) is always acceptable. The protection diodes D1 and D2 also protect against some overvoltage situations. With the circuit of Figure 1, if the supply voltage is below the absolute maximum rating and if a fault voltage up to the absolute maximum rating is applied to an analog signal pin, no damage will result. For example, with 5V supplies, analog signals up to 8.5V will not damage the circuit of Figure 1. If only a single fault signal is present, the fault voltage can rise to +12V or to -12V without damage. _______________________________________________________________________________________ 5 MAX320/MAX321/MAX322 _____________________Pin Description MAX320/MAX321/MAX322 Precision, Dual-Supply, SPST Analog Switches ______________________________________________Test Circuits/Timing Diagrams MAX320 MAX321 MAX322 SWITCH INPUT +5V V+ NO or NC COM V COM LOGIC INPUT SWITCH OUTPUT t r < 20ns t f < 20ns 50% VOUT RL 300 CL 35pF t OFF IN VOUT V- LOGIC INPUT SWITCH OUTPUT 0V 0.9 x VOUT t ON -5V CL INCLUDES FIXTURE AND STRAY CAPACITANCE. RL VOUT = VCOM RL + RON ( 0.9 x V0UT LOGIC INPUT WAVEFORMS INVERTED FOR SWITCHES THAT HAVE THE OPPOSITE LOGIC SENSE. ) Figure 2. Switching Time +5V MAX322 VCOM1 = +3V VCOM2 = +3V V+ COM1 VOUT2 NC2 COM2 RL2 300 IN LOGIC INPUT LOGIC INPUT VOUT1 NO1 RL1 300 CL1 35pF CL2 35pF SWITCH OUTPUT 1 (VOUT1) 50% 0.9 x V0UT1 0V SWITCH OUTPUT 2 (VOUT2) V-5V 0.9 x VOUT2 0V tD tD CL INCLUDES FIXTURE AND STRAY CAPACITANCE. Figure 3. Break-Before-Make Interval (MAX322 only) +5V MAX320 MAX321 MAX322 VOUT V+ RGEN COM V GEN VOUT NC or NO VOUT IN OFF CL ON OFF V- IN -5V VIN IN OFF ON OFF Q = (V OUT )(C L ) IN DEPENDS ON SWITCH CONFIGURATION; INPUT POLARITY DETERMINED BY SENSE OF SWITCH. Figure 4. Charge Injection 6 _______________________________________________________________________________________ Precision, Dual-Supply, SPST Analog Switches 10nF SIGNAL GENERATOR 0dBm MAX320 MAX321 MAX322 +5V COM SIGNAL GENERATOR 0dBm V+ IN VIN V+ COM1 N01 IN1 IN2 50 VIN 0V or 2.4V NC COM or NO ANALYZER MAX320 MAX321 MAX322 10nF +5V COM2 N02 ANALYZER V- N.C. V- RL RL -5V 10nF Figure 5. Off Isolation 10nF -5V Figure 6. Crosstalk 10nF +5V 10nF MAX320 MAX321 MAX322 V+ +5V MAX320 MAX321 MAX322 V+ COM COM CAPACITANCE METER IN CAPACITANCE METER NC or NO f = 1MHz VIN IN f = 1MHz V- V- -5V Figure 7. Channel-Off Capacitance VIN NC or NO 10nF -5V 10nF Figure 8. Channel-On Capacitance _______________________________________________________________________________________ 7 MAX320/MAX321/MAX322 _________________________________Test Circuits/Timing Diagrams (continued) MAX320/MAX321/MAX322 Precision, Dual-Supply, SPST Analog Switches __Ordering Information (continued) PART 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 MAX321CPA MAX321CSA MAX321CUA MAX321C/D MAX321EPA MAX321ESA MAX321EJA MAX321MJA MAX322CPA MAX322CSA MAX322CUA MAX322C/D MAX322EPA MAX322ESA MAX322EJA MAX322MJA PIN-PACKAGE 8 Plastic DIP 8 SO 8 MAX Dice* 8 Plastic DIP 8 SO 8 CERDIP** 8 CERDIP** 8 Plastic DIP 8 SO 8 MAX Dice* 8 Plastic DIP 8 SO 8 CERDIP** 8 CERDIP** ___________________Chip Topography NO1 (MAX320/2) NC1 (MAX321) V+ COM1 IN1 0.075" (1.90mm) IN2 COM2 NO2 (MAX320) NC2 (MAX321/2) V- 0.055" (1.40mm) TRANSISTOR COUNT: 91 SUBSTRATE CONNECTED TO V+ * Contact factory for dice specifications. ** Contact factory for availability. ________________________________________________________Package Information DIM C A 0.101mm 0.004 in e B A1 E L A A1 B C D E e H L INCHES MAX MIN 0.044 0.036 0.008 0.004 0.014 0.010 0.007 0.005 0.120 0.116 0.120 0.116 0.0256 0.198 0.188 0.026 0.016 6 0 MILLIMETERS MIN MAX 0.91 1.11 0.10 0.20 0.25 0.36 0.13 0.18 2.95 3.05 2.95 3.05 0.65 4.78 5.03 0.41 0.66 0 6 H 8-PIN MAX MICROMAX SMALL OUTLINE PACKAGE D 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. 8 ___________________Maxim Integrated Products, 120 San Gabriel Drive, Sunnyvale, CA 94086 (408) 737-7600 (c) 1994 Maxim Integrated Products Printed USA is a registered trademark of Maxim Integrated Products.