IDTQS3383 HIGH-SPEED CMOS 10-BIT BUS EXCHANGE SWITCH INDUSTRIAL TEMPERATURE RANGE QUICKSWITCH® PRODUCTS HIGH-SPEED CMOS 10-BIT BUS EXCHANGE SWITCH DESCRIPTION: FEATURES: • • • • • • The QS3383 provides ten high-speed CMOS TTL-compatible bus switches. The low ON resistance of the QS3383 allows inputs to be connected to outputs without adding propagation delay and without generating additional ground bounce noise. The Bus Enable (BE) signal turns the switches on. The Bus Exchange (BX) signal provides nibble swap of the AB and CD pairs of signals. This exchange configuration allows byte swapping of buses in systems. It can also be used as a 5-wide 2-to-1 multiplexer and to create low delay barrel shifters, etc. The QS3383 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 added ground bounce Undershoot clamp diodes on all switch and control inputs Bus exchange allows nibble swap Available in QSOP and SOIC packages APPLICATIONS: • • • • IDTQS3383 Hot-swapping, hot-docking Voltage translation (5V to 3.3V) Resource sharing Crossbar switching FUNCTIONAL BLOCK DIAGRAM A0 C0 B0 D0 A4 C4 B4 D4 BX 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-5571/1 IDTQS3383 HIGH-SPEED CMOS 10-BIT BUS EXCHANGE 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 VTERM(3) DC Input Voltage VIN –0.5 to +7 V VAC AC Input Voltage (pulse width ≤20ns) –3 V mA 24 VCC C0 1 2 23 D4 A0 3 22 B4 IOUT DC Output Current 120 4 21 A4 PMAX Maximum Power Dissipation (TA = 85°C) 0.5 W TSTG Storage Temperature –65 to +150 °C BE B0 D0 5 20 C4 C1 6 19 D3 A1 7 18 B3 B1 8 17 A3 D1 9 16 C3 C2 10 15 D2 A2 11 14 B2 GND 12 13 BX 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) 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 A0 - A4, B0 - B4 I/O A and B Buses Description C 0 - C 4, D 0 - D 4 I/O C and D Buses BE I Bus Switch Enable BX I Bus Exchange FUNCTION TABLE(1) BE BX A0 - A4 B0 - B4 Function H X Hi-Z Hi-Z Disconnect L L C0 - C 4 D0 - D 4 Connect L H D0 - D4 C0 - C 4 Exchange NOTE: 1. H = HIGH Voltage Level L = LOW Voltage Level X = Don't Care Z = High-Impedance 2 Unit IDTQS3383 HIGH-SPEED CMOS 10-BIT BUS EXCHANGE 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 ± 5% 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 — 6 8 Ω VCC = Min., VIN = 2.4V, ION = 15mA — 12 17 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 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 IDTQS3383 HIGH-SPEED CMOS 10-BIT BUS EXCHANGE SWITCH 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 1.5 mA ∆ICC Power Supply Current per Input HIGH(2) VCC = Max., VIN = 3.4V, f = 0 2.5 mA ICCD Dynamic Power Supply Current per MHz (3) VCC = Max., A and B 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, B,C, and D 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 ± 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 BE to Ax, Bx, Cx, Dx 1.5 6.5 ns tPLZ Switch Turn-Off Delay(2) 1.5 5.5 ns tPHZ BE to Ax, Bx, Cx, Dx tBX Switch Multiplex Delay BX to Ax, Bx, Cx, Dx 1.5 6.5 ns AxBx to CxDx, CxDx to AxBx 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 IDTQS3383 HIGH-SPEED CMOS 10-BIT BUS EXCHANGE SWITCH INDUSTRIAL TEMPERATURE RANGE ORDERING INFORMATION IDTQS XXXXX Device Type XX Package X Process Blank Industrial (-40°C to +85°C) SO Q Small Outline IC Quarter Size Outline Package 3383 High Speed CMOS 10-Bit Bus Exchange Switch 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