IDTQS3R861 HIGH-SPEED CMOS 10-BIT LOW RESISTANCE BUS SWITCH INDUSTRIAL TEMPERATURE RANGE QUICKSWITCH® PRODUCTS HIGH-SPEED CMOS 10-BIT LOW RESISTANCE BUS SWITCH WITH FLOW-THROUGH PINOUT DESCRIPTION: FEATURES: • • • • • IDTQS3R861 The QS3R861 provides a set of ten high-speed CMOS TTL-compatible bus switches. The very low ON resistance (2.5Ω) of the QS3R861 allows inputs to be connected without adding propagation delay and without generating additional ground bounce noise. The Bus Enable (BE) signal turns the switches on. The low ON resistance of the QS3R861 makes it ideal for PCI hotplugging or hot-swapping applications. The QS3R861 is characterized for operation at -40°C to +85°C. Enhanced N channel FET with no inherent diode to Vcc Ω bidirectional switches connect inputs to outputs 2.5Ω Zero propagation delay, zero ground bounce Undershoot clamp diodes on all switch and control inputs Available in SOIC and QSOP packages APPLICATIONS: • Hot-swapping, hot-docking (low resistance for PCI and Compact PCI applications) • Voltage translation (5V to 3.3V) • Power Conservation • Capacitance reduction and isloation • Bus Isolation • Clock Gating FUNCTIONAL BLOCK DIAGRAM A0 B0 A9 B9 BE The IDT logo is a registered trademark of Integrated Device Technology, Inc. INDUSTRIAL TEMPERATURE RANGE NOVEMBER 1999 1 c 1999 Integrated Device Technology, Inc. DSC-5543/2 IDTQS3R861 HIGH-SPEED CMOS 10-BIT LOW RESISTANCE BUS SWITCH INDUSTRIAL TEMPERATURE RANGE ABSOLUTE MAXIMUM RATINGS(1) PIN CONFIGURATION 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 NC 1 24 Vcc A0 2 23 BE VTERM(3) DC Input Voltage VIN –0.5 to +7 V AC Input Voltage (pulse width ≤20ns) –3 V mA A1 3 22 B0 VAC IOUT DC Output Current 120 A2 4 21 B1 PMAX Maximum Power Dissipation 0.5 W TSTG Storage Temperature –65 to +150 °C A3 5 20 B2 A4 6 19 B3 A5 7 18 B4 A6 8 17 B5 A7 9 16 B6 A8 10 15 B7 A9 11 14 B8 GND 12 13 B9 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 SOIC/ QSOP TOP VIEW Typ. Max. (1) Unit Control Inputs 3 4 pF Quickswitch Channels (Switch OFF) 5 6 pF NOTE: 1. This parameter is guaranteed but not production tested. PIN DESCRIPTION Pin Names Description A0 - A 9 Bus A B0 - B 9 Bus B BE Bus Switch Enable FUNCTION TABLE(1) BE A0 - A9 Function H Z Disconnect L B0 - B9 Connect NOTE: 1. H = HIGH Voltage Level L = LOW Voltage Level Z = High-Impedance 2 IDTQS3R861 HIGH-SPEED CMOS 10-BIT LOW RESISTANCE BUS SWITCH INDUSTRIAL TEMPERATURE RANGE DC ELECTRICAL CHARACTERISTICS OVER OPERATING RANGE Following Conditions Apply Unless Otherwise Specified: Industrial: TA = –40°C to +85°C, VCC = 5V ± 10% Symbol Parameter VIH Input HIGH Voltage VIL IIN Test Conditions Min. Guaranteed Logic HIGH for Control Pins 2 Input LOW Voltage Guaranteed Logic LOW for Control Pins Input Leakage Current (Control Inputs) 0V ≤ VIN ≤ VCC Typ.(1) Max. Unit — — V — — 0.8 V — 0.01 ±1 µA IOZ Off-State Current (Hi-Z) 0V ≤ VOUT ≤ VCC, Switches OFF — 0.01 ±1 µA RON Switch ON Resistance(2) VCC = Min., VIN = 0V, ION = 30mA — 2.5 5 Ω VCC = Min., VIN = 2.4V, ION = 15mA — 4 8.5 VP Pass Voltage(3) VIN = VCC = 5V, IOUT = -5µA 3.7 4 4.3 NOTES: 1. Typical values are at VCC = 5V and TA = 25°C. 2. Max value of 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 R ON (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 IDTQS3R861 HIGH-SPEED CMOS 10-BIT LOW RESISTANCE BUS SWITCH INDUSTRIAL TEMPERATURE RANGE POWER SUPPLY CHARACTERISTICS Symbol Parameter Test Conditions(1) Typ.(2) Max. Unit ICCQ Quiescent Power Supply Current VCC = Max., VIN = GND or VCC, f = 0 0.2 3 µA ∆ICC Power Supply Current per Input HIGH(3) VCC = Max., VIN = 3.4V, f = 0 2.5 mA ICCD Dynamic Power Supply Current per MHz(4) VCC = Max., A and B Pins Open, 0.25 mA/MHz BE Input Toggling @ 50% Duty Cycle NOTES: 1. For conditions shown as Min. or Max., use the appropriate values specified under DC Electrical Characteristics. 2. Typical values are at VCC = 5V and TA = 25°C. 3. 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 = -40°C to +85°C, VCC = 5V ± 10% CLOAD = 50pF, RLOAD = 500Ω unless otherwise noted. Symbol Min. (1) Parameter Typ. Max. Unit 0.12(3) ns tPLH tPHL Data Propagation Delay(2) tPZL tPZH Switch Turn-On Delay BE to A or B 1.5 5.6 ns tPLZ tPHZ Switch Turn-Off Delay(2) BE to A or B 1.5 4.5 ns A to B, B to A 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 0.12ns 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 IDTQS3R861 HIGH-SPEED CMOS 10-BIT LOW RESISTANCE BUS SWITCH INDUSTRIAL TEMPERATURE RANGE ORDERING INFORMATION IDTQS XXXXX Device Type XX Package X Process Blank Industrial (-40°C to +85°C) SO Q QG Small Outline IC Quarter Size Outline Package QSOP - Green 3R861 High Speed CMOS 10-Bit Low Resistance Bus Switch with Flow-Through Pinout 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 5 for Tech Support: [email protected] (408) 654-6459