IDTQS3VH125 3.3V QUAD ACTIVE LOW SWITCH FOR HOT SWAP APPLICATIONS INDUSTRIAL TEMPERATURE RANGE QUICKSWITCH(R) PRODUCTS 3.3V QUAD ACTIVE LOW SWITCH FOR HOT SWAP APPLICATIONS (HOTSWITCHTM) IDTQS3VH125 FEATURES: DESCRIPTION: - The QS3VH125 HotSwitch Quad bus switch is specially designed for a hot-swapping environment. The QS3VH125 has very low ON resistance, resulting in under 250ps propagation delay through the switch. The switches can be turned ON under the control of individual LVTTLcompatible active low Output Enable signals for bidirectional data flow with no added delay or ground bounce. In the OFF and ON states, the switches are 5V-tolerant. In the OFF state, the switches offer very high impedence at the terminals. - - - - - - - - - - - - N channel FET switches with no parasitic diode to Vcc * No DC path to Vcc or GND * 5V tolerant in OFF and ON state 5V tolerant I/Os Low RON - 4 typical Flat RON characteristics from 0 - 5V Rail-to-rail switching 0 - 5V Bidirectional dataflow with near-zero delay: no added ground bounce Excellent RON matching between channels Vcc operation: 2.3V to 3.6V High bandwidth - up to 500MHz LVTTL-compatible control Inputs Undershoot Clamp Diodes on all switch and control Inputs Low I/O capacitance, 4pF typical Available in QSOP and SOIC packages The combination of near-zero propagation delay, high OFF impedance, and over-voltage tolerance makes the QS3VH125 ideal for hot-swapping applications. The QS3VH125 is characterized for operation from -40C to +85C. APPLICATIONS: - - - - - PCI/Compact PCI hot-swapping 10/100 Base-T, Ethernet LAN switch Low distortion analog switch Replaces mechanical relay ATM 25/155 switching FUNCTIONAL BLOCK DIAGRAM 1A 2A 3A 4A 1Y 2Y 3Y 4Y 1O E 2O E 3O E 4O E The IDT logo is a registered trademark of Integrated Device Technology, Inc. INDUSTRIAL TEMPERATURE RANGE OCTOBER 2001 1 c 2001 Integrated Device Technology, Inc. DSC-5597/1 IDTQS3VH125 3.3V QUAD ACTIVE LOW SWITCH FOR HOT SWAP APPLICATIONS PIN CONFIGURATION NC 1 INDUSTRIAL TEMPERATURE RANGE ABSOLUTE MAXIMUM RATING(1) 16 Symbol VTERM(2) Description Supply Voltage to Ground Max. - 0.5 to 4.6 Unit V VCC VTERM(3) DC Switch Voltage VS - 0.5 to 5.5 V VTERM(3) DC Input Voltage VIN - 0.5 to 5.5 V -3 V 120 mA -65 to 150 C 1OE 2 15 4OE 1A 3 14 4A 1Y 4 13 4Y SO16-7 2OE 5 12 3OE 2A 6 11 3A 2Y 7 10 3Y GND 8 9 NC VAC AC Input Voltage (pulse width 20ns) VOUT DC Output Current TSTG Storage Temperature NOTES: 1. Stresses greater than those listed under ABSOLUTE MAXIMUM RATINGS may cause permanent damage to the device. This is a stress rating only and functional operation of the device at these or any other conditions above those indicated in the operational sections of this specification is not implied. Exposure to absolute maximum rating conditions for extended periods may affect reliability. 2. VCC terminals. 3. All terminals except VCC. QSOP TOP VIEW CAPACITANCE (TA = +25 C, f = 1MHz, VIN = 0V, VOUT = 0V) Symbol Parameter(1) CIN Control Inputs Typ. 3 Max. 5 Unit pF 4 6 pF CI/O o Quickswitch Channels (Switch OFF) NOTE: 1. This parameter is guaranteed but not production tested. 1O E 1 14 VCC 1A 2 13 4O E 1Y 3 12 4A 2O E 4 11 4Y 2A 5 10 3O E 2Y 6 9 3A GND 7 8 3Y SO14-1 PIN DESCRIPTION Pin Names I/O 1A - 4A I/O Bus A Description 1Y - 4Y I/O Bus Y 1OE - 4OE I Output Enable FUNCTION TABLE (1) SOIC TOP VIEW OE A Y L H H Connect L L L Connect H X X Disconnect NOTE: 1. H = HIGH Voltage Level L = LOW Voltage Level X = Don't Care 2 Function IDTQS3VH125 3.3V QUAD ACTIVE LOW SWITCH FOR HOT SWAP APPLICATIONS INDUSTRIAL TEMPERATURE RANGE DC ELECTRICAL CHARACTERISTICS OVER OPERATING RANGE Following Conditions Apply Unless Otherwise Specified: Industrial: TA = -40C to +85C, VCC = 3.3V 0.3V Symbol VIH Parameter Input HIGH Voltage Test Conditions Guaranteed Logic HIGH for Control Inputs Min. 2 Typ.(1) -- Max. -- Unit V VIL Input LOW Voltage Guaranteed Logic LOW for Control Inputs -- -- 0.8 V IIN Input Leakage Current (Control Inputs) 0V VIN VCC IOZ RON -- -- 1 A Off-State Current (Hi-Z) 0V VOUT VCC, Switches OFF -- -- 1 A Switch ON Resistance (2) VCC = Min., VIN = 0V, ION = 30mA -- 4 6 VCC = Min., VIN = 2.4V, ION = 15mA -- 5 8 NOTES: 1. Typical values are at VCC = 3.3V and TA = 25C. 2. RON guaranteed but not production tested. TYPICAL ON RESISTANCE vs VIN AT VCC = 3.3V 16 R ON (ohms) 14 12 10 8 6 4 2 0 0.0 0.5 1.0 1.5 2.0 2.5 VIN (Volts) 3 3.0 3.5 4.0 4.5 5.0 IDTQS3VH125 3.3V QUAD ACTIVE LOW SWITCH FOR HOT SWAP APPLICATIONS INDUSTRIAL TEMPERATURE RANGE POWER SUPPLY CHARACTERISTICS Test Conditions(1) = Max., VIN = GND or VCC, f = 0 Symbol ICCQ Parameter Quiescent Power Supply Current ICC Power Supply Current(2, 3) per Input HIGH VCC = Max., VIN = 3V, f = 0 per Control Input ICCD Dynamic Power Supply Current per MHz (4) VCC = Max., A and Y Pins Open, Control Inputs Toggling @ 50% Duty Cycle VCC Max. 3 Unit mA 30 A 0.25 mA/MHz NOTES: 1. For conditions shown as Min. or Max., use the appropriate values specified under DC Electrical Characteristics. 2. Per LVTLL driven input. A and Y pins do not contribute to Icc. 3. This parameter is guaranteed but not tested. 4. This parameter represents the current required to switch internal capacitance at the specified frequency. The A and Y inputs do not contribute to the Dynamic Power Supply Current. This parameter is guaranteed but not production tested. SWITCHING CHARACTERISTICS OVER OPERATING RANGE TA = -40C to +85C Symbol tPLH tPHL tPZH tPZL tPHZ tPLZ fOE Parameter Data Propagation Delay(1,2) A to Y Switch Turn-On Delay OE to nA/nY Switch Turn-Off Delay(1) OE to nA/nY Operating Frequency - Enable (1,4) Min. (3) Typ. Max. 0.25 Unit ns 1.5 9 ns 1.5 8 ns 1 MHz NOTES: 1. This parameter is guaranteed but not production tested. 2. The bus switch contributes no propagation delay other than the RC delay of the ON resistance of the switch and the load capacitance. The time constant for the switch alone is of the order of 0.25ns at CL = 50pF. Since this time constant is much smaller than the rise and fall times of typical driving signals, it adds very little propagation delay to the system. Propagation delay of the bus switch, when used in a system, is determined by the driving circuit on the driving side of the switch and its interaction with the load on the driven side. 3. Minimums are guaranteed but not production tested. 4. Maximum toggle frequency for OE control input. 4 IDTQS3VH125 3.3V QUAD ACTIVE LOW SWITCH FOR HOT SWAP APPLICATIONS INDUSTRIAL TEMPERATURE RANGE SOME APPLICATIONS FOR HOTSWITCH PRODUCTS RAIL-TO-RAIL SWITCHING NFET 0 to +5V Vcc = 3.3V +6.5V CHARGE PUMP OE 0 to +5V DRIVER SINGLE HOT SW ITCH FAST ETHERNET DATA SWITCHING (LAN SWITCH) PHY 3VH SW ITCH 4.5V P P LOGIC SID E 10Mbps to 100Mbps Z = 100 Z = 100 >100m 4.5V P P TW ISTED PAIR LOGIC SID E 2V PP HOT SWAPPING: PCI/COMPACT PCI ZERO DOW N TIME SYSTEM PLUGGABLE CARD/ LIVE SYSTEM CARD I/O ON CARD LOGIC CONNECTOR QS3VHXXX CARD I/O ON CARD LOGIC CONNECTOR QS3VH XXX CPU RAM PCI/COMPACT PCI BUS 5 IDTQS3VH125 3.3V QUAD ACTIVE LOW SWITCH FOR HOT SWAP APPLICATIONS INDUSTRIAL TEMPERATURE RANGE ORDERING INFORMATION ID TQS XXXXX XX D evice Type Package CORPORATE HEADQUARTERS 2975 Stender Way Santa Clara, CA 95054 S1 Q Sm all Outline IC (SO 14-1) Quarter Size O utline Package (SO 16-7) 3VH 125 3.3V Quad Active Low Sw itch for H ot Sw ap Applications for SALES: 800-345-7015 or 408-727-6116 fax: 408-492-8674 www.idt.com 6 for Tech Support: logichelp@idt.com (408) 654-6459