IDTQSIDTQS32XL384 HIGH-SPEED CMOS 20-BIT BUS SWITCH INDUSTRIAL TEMPERATURE RANGE QUICKSWITCH® PRODUCTS HIGH-SPEED CMOS 20-BIT BUS SWITCH DESCRIPTION: FEATURES: • • • • • • • The QS32XL384 provides a set of twenty high-speed CMOS TTLcompatible bus switches. The low ON resistance of the QS32XL384 allows inputs to be connected to outputs without adding propagation delay and without generating additional ground bounce noise. The Bus Enable (BE) signals turn the switches on. Four Bus Enable signals are provided, one for each of five bits of the 20-bit bus. The ‘384 family of QuickSwitch products is ideal for switching wide digital buses, as well as hot-docking, 5V to 3V conversion and capacitance isolation for power conservation. The QS32XL384 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 5Ω Zero propagation delay, zero ground bounce Undershoot Clamp Diodes on all switch and control Inputs Four enables control five bits each TTL-compatible input and output levels Available in 48-pin QVSOP package APPLICATIONS: • • • • • • • • IDTQS32XL384 Hot-swapping, hot-docking Voltage translation (5V to 3.3V) Logic replacement (data processing) Power conservation Capacitance reduction and isolation Low power for hand held and mobile applications Bus isolation Clock gating FUNCTIONAL BLOCK DIAGRAM A0 B0 A10 B10 A4 B4 A14 B14 A5 B5 A15 B15 A9 B9 A19 B19 BEA BEC BED BEB The IDT logo is a registered trademark of Integrated Device Technology, Inc. INDUSTRIAL TEMPERATURE RANGE APRIL 2002 1 c 2002 Integrated Device Technology, Inc. DSC-5732/3 IDTQS32XL384 HIGH-SPEED CMOS 20-BIT BUS SWITCH INDUSTRIAL TEMPERATURE RANGE ABSOLUTE MAXIMUM RATINGS(1) PIN CONFIGURATION Symbol BEA 1 B0 2 48 47 A0 3 A1 4 VCC Unit SupplyVoltage to Ground –0.5 to +7 V VTERM(3) DC Switch Voltage VS –0.5 to +7 V –0.5 to +7 V VTERM(3) DC Input Voltage VIN VAC AC Input Voltage (pulse width ≤20ns) –3 V 46 A19 IOUT DC Output Current 120 mA 45 A18 PMAX Maximum Power Dissipation (TA = 85°C) TSTG Storage Temperature 44 B18 B2 6 43 B17 A2 7 42 A17 A3 8 41 A16 B3 9 40 B16 B4 10 39 B15 A4 11 38 A15 GND 12 37 BEC 13 36 B5 14 35 BEB VCC B14 A5 15 34 A14 A6 16 33 A13 B6 17 32 B13 B7 18 31 B12 19 30 A12 A8 20 29 A11 B8 21 28 B11 B9 22 27 B10 A9 23 26 A10 GND 24 25 A7 Max B19 5 B1 Description VTERM(2) CAPACITANCE (TA = +25°C, F = 1MHz, VIN = 0V, VOUT = 0V) I/O Bus A B0 - B19 I/O Bus B BEA I Enable, 0 - 4 BEB I Enable, 15 - 19 BEC I Enable, 5 - 9 BED I Enable, 10 - 14 Typ. Max.(1) Unit Control Inputs 3 5 pF Quickswitch Channels (Switch OFF) 5 7 pF FUNCTION TABLE(1) PIN DESCRIPTION I/O Pins NOTE: 1. This parameter is guaranteed but not production tested. QVSOP TOP VIEW A0 - A19 W °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 . BED Pin Names 0.5 –65 to +150 BEA BEB B0 - B4 B15 - B19 Function H H Z Z Disconnect L H A0 - A4 Z Connect H L Z A15 - A19 Connect L L A0 - A4 A15 - A19 Connect BEC BED B5 - B9 B10 - B14 Function H H Z Z Disconnect L H A5 - A9 Z Connect H L Z A10 - A14 Connect L L A5 - A9 A10 - A14 Connect NOTE: 1. H = HIGH Voltage Level L = LOW Voltage Level Z = High-Impedence Description 2 IDTQSIDTQS32XL384 HIGH-SPEED CMOS 20-BIT 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 = 5.0V ± 5% Symbol Parameter Test Conditions Min. Typ.(1) Max. Unit VIH Input HIGH Voltage Guaranteed Logic HIGH for Control Pins 2 — — V VIL Input LOW Voltage Guaranteed Logic LOW for Control Pins — — 0.8 V IIN Input Leakage Current (Control Inputs) 0V ≤ VIN ≤ VCC — ±0.01 ±1 µA IOZ Off-State Current (Hi-Z) 0V ≤ VOUT ≤ VCC, Switches OFF — ±0.01 ±1 µA RON Switch ON Resistance VCC = Min., VIN = 0V, ION = 30mA — 5 7 Ω VCC = Min., VIN = 2.4V, ION = 15mA — 10 15 VIN = VCC = 5V, IOUT = -5µA 3.7 4 4.2 VP Pass Voltage(2) NOTES: 1. Typical values are at VCC = 5.0V and TA = 25°C. 2. 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 V IN (Volts) 3 2.5 3.0 3.5 V IDTQS32XL384 HIGH-SPEED CMOS 20-BIT BUS SWITCH INDUSTRIAL TEMPERATURE RANGE POWER SUPPLY CHARACTERISTICS Symbol Parameter Test Conditions(1) ICCQ Quiescent Power Supply Current VCC = Max., VIN = GND or VCC, f = 0 ∆ICC Power Supply Current per Input HIGH(2) VCC = Max., VIN = 3.4V, f = 0 ICCD Dynamic Power Supply Current per MHz(3) VCC = Max., A and B Pins Open Max. Unit 6 µA 2.5 mA 0.25 mA/MHz Control Input Toggling @ 50% Duty Cycle 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 = -40°C to +85°C Symbol Parameter Min.(1) Typ. Max. Unit tPLH tPHL tPZL Data Propagation Delay(2,4) Ax to Bx, Bx to Ax Switch Turn-On Delay ⎯ ⎯ 0.25(3) ns 1.5 ⎯ 6.5 ns tPZH tPLZ BE to Ax, Bx Switch Turn-Off Delay(2) 1.5 ⎯ 5.5 ns tPHZ BE to Ax, Bx NOTES: 1. Minimums are guaranteed but not production tested. 2. This parameter is guaranteed but not production tested. 3. The time constant for the switch alone is of the order of 0.25ns at CL = 50pF. 4. The bus switch contributes no propagation delay other than the RC delay of the ON resistance of the switch and the load capacitance. 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 IDTQSIDTQS32XL384 HIGH-SPEED CMOS 20-BIT BUS SWITCH INDUSTRIAL TEMPERATURE RANGE ORDERING INFORMATION IDTQS XXXXX Device Type XX Package X Process Blank Industrial (-40°C to +85°C) Q1 Q1G 48-Pin QVSOP QVSOP - Green 32XL384 High Speed 20-Bit Bus Switch DATA SHEET DOCUMENT HISTORY 4/22/2002 Page 2, changed pins 34 and 35 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