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| IDTQS3306A HIGH-SPEED CMOS DUAL BUS SWITCH WITH INDIVIDUAL ENABLES INDUSTRIAL TEMPERATURE RANGE QUICKSWITCH(R) PRODUCTS HIGH-SPEED CMOS DUAL BUS SWITCH WITH INDIVIDUAL ACTIVE LOW ENABLES FEATURES: * * * * * * IDTQS3306A Enhanced N channel FET with no inherent diode to Vcc Very low ON resistance (3 typical) Zero propagation delay, zero added ground bounce Fast turn-on/turn-off time Undershoot clamp diodes on all switch and control inputs Available in SOIC package The QS3306A provides a set of two high-speed low resistance (3 typical) CMOS switches connecting inputs to outputs without propagation delay and without generating additional ground bounce noise. Individual enables (OE) are used to turn on the switches. The QS3306A is ideal for signal and control switching since the device adds no noise, ground bounce, propagation delay, or significant power consumption to the system. The QS3306A can also be used for analog switching applications such as video. The QS3306A is characterized for operation at -40C to +85C. DESCRIPTION: APPLICATIONS: * * * * * * * * Line control Hot-swapping, hot-docking Voltage translation (5V to 3.3V) Power conservation Capacitance reduction and isolation Clock gating Bus isolation Signal suppression/blanking FUNCTIONAL BLOCK DIAGRAM 1A 2A 1O E 2O E 1B 2B The IDT logo is a registered trademark of Integrated Device Technology, Inc. INDUSTRIAL TEMPERATURE RANGE 1 c 1999 Integrated Device Technology, Inc. NOVEMBER 1999 DSC-5577/1 IDTQS3306A HIGH-SPEED CMOS DUAL BUS SWITCH WITH INDIVIDUAL ENABLES INDUSTRIAL TEMPERATURE RANGE PIN CONFIGURATION ABSOLUTE MAXIMUM RATINGS(1) Symbol VTERM(2) VTERM(3) VTERM(3) VAC IOUT PMAX TSTG Description Supply Voltage to Ground DC Switch Voltage VS DC Input Voltage VIN AC Input Voltage (pulse width 20ns) DC Output Current Maximum Power Dissipation Storage Temperature Max -0.5 to +7 -0.5 to +7 -0.5 to +7 -3 120 0.5 -65 to +150 Unit V V V V mA W C 1OE 1A 1B 1 2 3 4 8 7 6 5 Vcc 2OE 2A 2B GND 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 . SOIC (S1) TOP VIEW CAPACITANCE (TA = +25C, f = 1MHz, VIN = 0V, VOUT = 0V) Pins OE (Inputs) Quickswitch Channels (Switch OFF) Typ. 3 5 Max. (1) 5 7 Unit pF pF NOTE: 1. This parameter is guaranteed but not production tested. PIN DESCRIPTION Pin Names 1A - 2A 1B - 2B I/O I/O I/O I Bus A Bus B Description 1OE - 2OE Switch Enable FUNCTION TABLE(1) xOE L L H xA H L X xB H L X Function Connect Connect Disconnect NOTE: 1. H = HIGH Voltage Level L = LOW Voltage Level X = Don't Care 2 IDTQS3306A HIGH-SPEED CMOS DUAL BUS SWITCH WITH INDIVIDUAL ENABLES INDUSTRIAL TEMPERATURE RANGE DC ELECTRICAL CHARACTERISTICS OVER OPERATING RANGE Following Conditions Apply Unless Otherwise Specified: Industrial: TA = -40C to +85C, VCC = 5V 5% Symbol VIH VIL IIN IOZ RON VP Parameter Input HIGH Voltage Input LOW Voltage Input Leakage Current (Control Inputs) Off-State Current (Hi-Z) Switch ON Resistance(2) Pass Voltage(3) Test Conditions Guaranteed Logic HIGH for Control Pins Guaranteed Logic LOW for Control Pins 0V VIN VCC 0V VOUT VCC, Switches OFF VCC = Min., VIN = 0V, ION = 30mA VCC = Min., VIN = 2.4V, ION = 15mA VIN = VCC = 5V, IOUT = -5A Min. 2 -- -- -- -- -- 3.7 Typ.(1) Max. -- -- -- -- 5 10 4 -- 0.8 1 1 7 15 4.2 V Unit V V A A NOTES: 1. Typical values are at VCC = 5V and TA = 25C. 2. RON is guaranteed but not production tested. 3. Pass voltage is guaranteed but not production tested. TYPICAL ON RESISTANCE vs VIN AT VCC = 5V 16 14 RON (ohms) 12 10 8 6 4 2 0 0.0 0.5 1.0 1.5 2.0 2.5 3.0 3.5 VIN (Volts) 3 IDTQS3306A HIGH-SPEED CMOS DUAL BUS SWITCH WITH INDIVIDUAL ENABLES INDUSTRIAL TEMPERATURE RANGE POWER SUPPLY CHARACTERISTICS Symbol ICCQ ICC ICCD Parameter Quiescent Power Supply Current Power Supply Current per Input HIGH(2) Dynamic Power Supply Current per MHz (3) Test Conditions(1) VCC = Max., VIN = GND or VCC, f = 0 VCC = Max., VIN = 3.4V, f = 0 VCC = Max., A and B Pins Open, Control Inputs Toggling @ 50% Duty Cycle Max. 3 1 0.25 Unit A mA mA/MHz NOTES: 1. For conditions shown as Min. or Max., use the appropriate values specified under DC Electrical Characteristics. 2. Per TTL-driven input (VIN = 3.4V, control inputs only). A and B pins do not contribute to Icc. 3. This current applies to the control inputs only and represents the current required to switch internal capacitance at the specified frequency. The A and B inputs generate no significant AC or DC currents as they transition. This parameter is guaranteed but not production tested. SWITCHING CHARACTERISTICS OVER OPERATING RANGE TA = -40C to +85C, VCC = 5V 5% CLOAD = 50pF, RLOAD = 500 unless otherwise noted. Symbol tPLH tPHL tPZL tPZH tPLZ tPHZ Parameter Data Propagation Delay(2) xA to xB Switch Turn-On Delay OE to xA/xB Switch Turn-Off Delay(2) OE to xA/xB 1.5 1.5 6.5 5.5 ns ns Min. (1) Typ. Max. 0.25(3) Unit ns NOTES: 1. Minimums are guaranteed but not production tested. 2. This parameter is guaranteed but not production tested. 3. 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. 4 IDTQS3306A HIGH-SPEED CMOS DUAL BUS SWITCH WITH INDIVIDUAL ENABLES INDUSTRIAL TEMPERATURE RANGE ORDERING INFORMATION IDTQS XXXXX Device Type XX Package X Process Blank Industrial (-40C to +85C) S1 8 pin Small Outline IC 3306A High Speed CMOS Dual Bus Switch with Individual Active Low Enables CORPORATE HEADQUARTERS 2975 Stender Way Santa Clara, CA 95054 for SALES: 800-345-7015 or 408-727-6116 fax: 408-492-8674 www.idt.com for Tech Support: logichelp@idt.com (408) 654-6459 5 |
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