IDTQS3126 HIGH-SPEED CMOS QUADRUPLE BUS SWITCH WITH INDIVIDUAL ACTIVE INDUSTRIAL TEMPERATURE RANGE QUICKSWITCH® PRODUCTS HIGH-SPEED CMOS QUADRUPLE BUS SWITCH WITH INDIVIDUAL ACTIVE HIGH ENABLES FEATURES: • • • • • • IDTQS3126 DESCRIPTION: Enhanced N channel FET with no inherent diode to Vcc Bidirectional switches connect inputs to outputs Pin compatible with the 74’126 function Zero propagation delay, zero ground bounce Undershoot clamp diodes on all switch and control inputs Available in QSOP and SOIC packages The QS3126 provides a set of four high-speed CMOS switches connecting inputs to outputs. The low ON resistance of the QS3126 allows inputs to be connected to outputs without propagation delay and without generating additional ground bounce noise. Individual active high enables (OE) are used to turn the switches on. The QS3126 is ideal for signal and control switching since the device adds no noise, ground bounce, propagation delay, or significant power consumption to the system. QuickSwitch devices provide an order of magnitude faster speed than conventional logic devices. The QS3126 is characterized for operation at -40°C to +85°C. APPLICATIONS: • • • • • Active high enabling Hot-swapping, hot-docking Voltage translation (5V to 3.3V) Power conservation Capacitance reduction and isolation (mass storage, work stations) • Logic replacement (data processing) • Clock gating • Bus isolation 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 FEBRUARY 2000 1 c 2000 Integrated Device Technology, Inc. DSC-5599/2 IDTQS3126 HIGH-SPEED CMOS QUADRUPLE BUS SWITCH WITH INDIVIDUAL ACTIVE ABSOLUTE MAXIMUM RATINGS(1) PIN CONFIGURATION 16 VCC 1OE 1 2 15 4OE 1A 3 14 4A NC INDUSTRIAL TEMPERATURE RANGE 1Y 4 13 2OE 5 12 3OE 2A 6 11 3A 2Y 7 10 3Y GND 8 9 NC 4Y Symbol Description VTERM(2) Max Unit VTERM(3) Supply Voltage to Ground –0.5 to +7 V DC Switch Voltage VS –0.5 to +7 V VTERM(3) DC Input Voltage VIN –0.5 to +7 V VAC AC Input Voltage (pulse width ≤20ns) –3 V IOUT DC Output Current 120 mA PMAX Maximum Power Dissipation (TA = 85°C) 0.5 W TSTG Storage Temperature –65 to +150 °C 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 . CAPACITANCE (TA = +25°C, f = 1MHz, VIN = 0V, VOUT = 0V) Pins QSOP TOP VIEW Max. (1) Typ. Control Inputs 3 5 pF Quickswitch Channels (Switch OFF) 5 7 pF NOTE: 1. This parameter is guaranteed but not production tested. PIN DESCRIPTION Pin Names I/O 1A - 4A I/O 1Y - 4Y I/O 1OE - 4OE I Description Bus A Bus Y 14 VCC 1A 1 2 13 4OE 1Y 3 12 4A 2OE 4 11 4Y 2A 5 10 3OE 2Y 6 9 3A xOE xA xY H H H Connect GND 7 8 3Y H L L Connect L X X Disconnect 1OE Bus Switch Enable FUNCTION TABLE(1) NOTE: 1. H = HIGH Voltage Level L = LOW Voltage Level X = Don't Care SOIC TOP VIEW 2 Unit Function IDTQS3126 HIGH-SPEED CMOS QUADRUPLE BUS SWITCH WITH INDIVIDUAL ACTIVE INDUSTRIAL TEMPERATURE RANGE DC ELECTRICAL CHARACTERISTICS OVER OPERATING RANGE Following Conditions Apply Unless Otherwise Specified: Industrial: TA = –40°C to +85°C, VCC = 5V ± 5% Symbol Parameter VIH Input HIGH Voltage VIL IIN Test Conditions Min. Typ.(1) Max. Unit Guaranteed Logic HIGH for Control Inputs 2 — — V Input LOW Voltage Guaranteed Logic LOW for Control Inputs — — 0.8 V Input Leakage Current (Control Inputs) 0V ≤ VIN ≤ VCC — — ±1 µA IOZ Off-State Current (Hi-Z) 0V ≤ VOUT ≤ VCC, Switches OFF — — ±1 µA RON Switch ON Resistance(2) VCC = Min., VIN = 0V, ION = 30mA — 5 7 Ω VCC = Min., VIN = 2.4V, ION = 15mA — 10 15 VP Pass Voltage(3) VIN = VCC = 5V, IOUT = -5µA 3.7 4 4.2 NOTES: 1. Typical values are at VCC = 5V and TA = 25°C. 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 R ON 14 (ohms) 12 10 8 6 4 2 0 0.0 0.5 1.0 1.5 2.0 VIN (Volts) 3 2.5 3.0 3.5 V IDTQS3126 HIGH-SPEED CMOS QUADRUPLE BUS SWITCH WITH INDIVIDUAL ACTIVE INDUSTRIAL TEMPERATURE RANGE POWER SUPPLY CHARACTERISTICS Symbol Parameter Test Conditions(1) Max. Unit ICCQ Quiescent Power Supply Current VCC = Max., VIN = GND or VCC, f = 0 3 µA ∆ICC Power Supply Current per Input HIGH(2) VCC = Max., VIN = 3.4V, f = 0 1.25 mA ICCD Dynamic Power Supply Current per MHz (3) VCC = Max., A and Y Pins Open, Control Inputs Toggling @ 50% Duty Cycle 0.25 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 Y 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 Y 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 = -40°C to +85°C, VCC = 5V ± 5% CLOAD = 50pF, RLOAD = 500Ω unless otherwise noted. Symbol Min. (1) Parameter Typ. Max. Unit 0.25(3) ns tPLH tPHL Data Propagation Delay(2) tPZL tPZH Switch Turn-On Delay OE to xA/xY 1.5 6.5 ns tPLZ Switch Turn-Off Delay(2) 1.5 5.5 ns tPHZ OE to xA/xY A to Y 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 IDTQS3126 HIGH-SPEED CMOS QUADRUPLE BUS SWITCH WITH INDIVIDUAL ACTIVE INDUSTRIAL TEMPERATURE RANGE ORDERING INFORMATION IDTQS XXXXX Device Type XX Package X Process CORPORATE HEADQUARTERS 2975 Stender Way Santa Clara, CA 95054 Blank Industrial (-40°C to +85°C) Q QG S1 Quarter Size Outline Package QSOP - Green Small Outline IC 3126 High Speed CMOS Quadruple Bus Switch with Individual Active High Enables for SALES: 800-345-7015 or 408-727-6116 fax: 408-492-8674 www.idt.com 5 for Tech Support: [email protected] (408) 654-6459