IDQS34X245 IDT | Alldatasheet

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HIGH-SPEED CMOS QUICKSWITCH 32-BIT MULTIWIDTH BUS SWITCHES INDUSTRIAL TEMPERATURE RANGE APRIL 2000 2000 Integrated Device Technology, Inc. DSC-5481/3 c INDUSTRIAL TEMPERATURE RANGE FUNCTIONAL BLOCK DIAGRAM The IDT logo is a registered trademark of Integrated Device Technology, Inc. FEATURES:

  • Enhanced N channel FET with no inherent diode to Vcc
  • Bidirectional switches connect inputs to outputs
  • Zero propagation delay, zero ground bounce
  • QS34X245 is 32-bit version of QS3245
  • Flow-through pinout for easy layout
  • Undershoot clamp diodes on all switch and control inputs
  • TTL-compatible control inputs
  • Available in 80-pin MilliPaQ™ package APPLICATIONS:
  • Hot-swapping, hot-docking
  • Voltage translation (5V to 3.3V)
  • Bus switching and isolation
  • Power conservation
  • Logic replacement (data processing)
  • Capacitance isolation
  • Clock gating IDTQS34X245 QUICKSWITCH® PRODUCTS HIGH-SPEED CMOS QUICKSWITCH 32-BIT MULTIWIDTH™ BUS SWITCHES DESCRIPTION: The QS34X245 is a member of the MultiWidthTM family of QuickSwitch devices and provides a set of 32 high-speed CMOS compatible bus switches in a flow-through pinout. This device is available in the MilliPaQ package, the world's first small outline 32-bit solution. The low ON-resistance of the QS34X245 allows inputs to be connected to outputs without adding propa- gation delay and without generating additional ground bounce noise. When Output Enable (OEn) is low, the switches are turned on, connecting bus A to bus B. When OEn is high, the switches are turned off. This device is ideally suited for 32/64 bit applications where board space is at a premium. QuickSwitch devices provide speeds an order of magnitude faster than conventional logic devices. The QS34X245 is characterized for operation at -40°C to +85°C. OE1 B 1 OE2 B10 A10 B11 A11 B12 A12 B13 A13 B14 A14 B15 A15 B16 OE3 A16 B17 A17 B18 A18 B19 A19 B20 A20 B21 A21 B22 A22 B23 A23 B24 OE4 A24 B25 A25 B26 A26 B27 A27 B28 A28 B29 A29 B30 A30 B31 A31

INDUSTRIAL TEMPERATURE RANGE IDTQS34X245 HIGH-SPEED CMOS QUICKSWITCH 32-BIT MULTIWIDTH BUS SWITCHES PIN CONFIGURATION CAPACITANCE (TA = +25°C, f = 1.0MHZ, VIN = 0V, VOUT = 0V) NOTE: 1. This parameter is measured at characterization but not tested. Pins Typ. Max.(1) Unit Control Pins pF Quickswitch Channels (Switch OFF) pF Symbol

Description

VTERM(2) Supply Voltage to Ground –0.5 to +7 V VTERM(3) 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) V IOUT DC Output Current 120 mA PMAX Maximum Power Dissipation (TA =70°C) 1.4 W TSTG Storage Temperature –65 to +150 ABSOLUTE MAXIMUM RATINGS(1) NOTE: 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. MILLIPAQ TOP VIEW NOTE: 1. H = HIGH Voltage Level L = LOW Voltage Level FUNCTION TABLE(1) OEn Function H Disconnected L An = Bn PIN DESCRIPTION Pin Names

HIGH-SPEED CMOS QUICKSWITCH 32-BIT MULTIWIDTH BUS SWITCHES INDUSTRIAL TEMPERATURE RANGE RON (ohms) VIN (Volts) TYPICAL ON RESISTANCE vs VIN AT VCC = 5V Symbol Parameter Test Conditions Min. Typ.(1) Max. Unit VIH Input HIGH Level Guaranteed Logic HIGH for Control Pins V VIL Input LOW Level Guaranteed Logic LOW for Control Pins 0.8 V IIN Input LeakageCurrent (Control Inputs) 0V ≤ VIN ≤ VCC µA IOZ Off-State Current (Hi-Z) 0V ≤ VOUT ≤ VCC, Switches OFF µA RON Switch ON Resistance VCC = Min., VIN = 0V, ION = 30mA Ω VCC = Min., VIN = 2.4V, ION =15mA VP Pass Voltage(2) VIN = VCC = 5V, IOUT = -5µA 3.7 4.2 V DC ELECTRICAL CHARACTERISTICS OVER OPERATING RANGE Following Conditions Apply Unless Otherwise Specified: Industrial: TA = –40°C to +85°C, VCC = 5.0V ±5% NOTES: 1. Typical values are at VCC = 5.0V, TA = 25°C. 2. Pass Voltage is guaranteed but not production tested. 0.0 0.5 1.0 1.5 2.0 2.5 3.0 3.5

INDUSTRIAL TEMPERATURE RANGE IDTQS34X245 HIGH-SPEED CMOS QUICKSWITCH 32-BIT MULTIWIDTH BUS SWITCHES POWER SUPPLY CHARACTERISTICS Symbol Parameter Test Conditions(1) Max. Unit ICCQ Quiescent Power Supply Current VCC = Max., VIN = GND or Vcc, f = 0 µA ∆ICC Power Supply Current per Control Input HIGH (2) VCC = Max., VIN = 3.4V, f = 0 1.5 mA ICCD Dynamic Power Supply Current per MHz(3) VCC = Max., A and B pins open 0.25 mA/MHz Control Inputs Toggling at 50% Duty Cycle NOTES: 1. For conditions shown as Min. or Max., use the appropriate values specified under DC Electrical Characteristics. 2. Per TLL 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 = 5.0V ± 5%; CLOAD = 50pF, RLOAD = 500Ω unless otherwise noted. Symbol Parameter Min. (1) Typ. Max. Unit tPLH Data Propagation Delay (1,2) 0.25 ns tPHL An to/from Bn tPZL Switch Turn-on Delay 0.5 5.6 ns tPZH OE to An/Bn tPLZ Switch Turn-off Delay (1) 0.5 5.2 ns tPHZ OE to An/Bn NOTES: 1. Minimums are 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 for 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.

HIGH-SPEED CMOS QUICKSWITCH 32-BIT MULTIWIDTH BUS SWITCHES INDUSTRIAL TEMPERATURE RANGE

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800-345-7015 or 408-727-6116 logichelp@idt.com Santa Clara, CA 95054 fax: 408-492-8674 (408) 654-6459 www.idt.com IDTQS XXXXXX XX Package Device Type Blank Industrial (-40°C to +85°C) 80-pin Millipaq 80-pin Millipaq - Green Q3G 34X245 High-Speed CMOS Quickswitch 32-Bit Multiwidth Bus Switches X Process