IDTQS32384 HIGH-SPEED CMOS 10-BIT BUS SWITCH INDUSTRIAL TEMPERATURE RANGE QUICKSWITCH® PRODUCTS HIGH-SPEED CMOS 10-BIT BUS SWITCH FEATURES: • • • • • • • IDTQS32384 DESCRIPTION: Enhanced N channel FET with no inherent diode to Vcc Ω bidirectional switches connect inputs to outputs 5Ω Zero ground bounce Ω resistors for low noise 25Ω Undershoot clamp diodes on all switch and control inputs Two enables control five bits each Available in QSOP and SOIC packages The QS32384 provides a set of ten high-speed CMOS, TTL-compatible bus switches. Two banks of five switches are controlled by independent Bus Enable (BE) signals. The QS32384 adds an internal series resistor with each switch to reduce reflection noise in high speed applications. When closed, the switch acts as the source (series) termination for the driver connected to it. The QS32384 is characterized for operation at -40°C to +85°C. APPLICATIONS: • • • • • • Hot-swapping, hot-docking Voltage translation (5V to 3.3V) Power conservation Capacitance reduction and isolation Clock gating Bus isolation FUNCTIONAL BLOCK DIAGRAM A0 B0 A4 B4 A5 B5 A9 B9 BEA BEB The IDT logo is a registered trademark of Integrated Device Technology, Inc. INDUSTRIAL TEMPERATURE RANGE APRIL 2000 1 c 2000 Integrated Device Technology, Inc. DSC-5751/1 IDTQS32384 HIGH-SPEED CMOS 10-BIT BUS SWITCH INDUSTRIAL TEMPERATURE RANGE ABSOLUTE MAXIMUM RATINGS(1) PIN CONFIGURATION BEA B0 1 2 24 VCC 23 B9 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 120 mA A0 3 22 A9 IOUT DC Output Current A1 4 21 A8 PMAX Maximum Power Dissipation (TA = 85°C) TSTG Storage Temperature B1 5 20 B8 B2 6 19 B7 A2 7 18 A7 A3 8 17 A6 B3 9 16 B6 B4 10 15 B5 A4 11 14 A5 GND 12 13 BEB 0.5 W –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/ SOIC 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 - A9 I/O Bus A Description B0 - B9 I/O Bus B BEA, BEB I Bus Switch Enable FUNCTION TABLE(1) BEA BEB B0 - B4 B5 - B 9 Function H H Z Z Disconnect L H A0 - A4 Z Connect H L Z A5 - A9 Connect L L A0 - A4 A5 - A9 Connect NOTE: 1. H = HIGH Voltage Level L = LOW Voltage Level Z = High-Impedance 2 Unit IDTQS32384 HIGH-SPEED CMOS 10-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 = 5V ± 5% Symbol Parameter VIH Input HIGH Voltage VIL IIN Test Conditions Min. Guaranteed Logic HIGH for Control Inputs 2 Input LOW Voltage Guaranteed Logic LOW for Control Inputs 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 VCC = Min., VIN = 0V, ION = 30mA 20 28 40 Ω VCC = Min., VIN = 2.4V, ION = 15mA 20 35 48 VP Pass Voltage(2) VIN = VCC = 5V, IOUT = -5µA 3.7 4 4.2 NOTES: 1. Typical values are at VCC = 5V and TA = 25°C. 2. Pass voltage is guaranteed but not production tested. TYPICAL ON RESISTANCE vs VIN AT VCC = 5V 80 R ON 70 (ohms) 60 50 40 30 20 10 0 0.0 0.5 1.0 1.5 VIN (Volts) 3 2.0 2.5 3.0 3.5 V IDTQS32384 HIGH-SPEED CMOS 10-BIT BUS SWITCH INDUSTRIAL TEMPERATURE RANGE POWER SUPPLY CHARACTERISTICS Symbol Test Conditions(1) Parameter Max. Unit ICCQ Quiescent Power Supply Current VCC = Max., VIN = GND or VCC, f = 0 1.5 mA ∆ICC Power Supply Current per Control 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 1.25(3) ns tPLH tPHL Data Propagation Delay(2) tPZL tPZH Switch Turn-On Delay BEA, BEB to Ax, Bx 1.5 7.5 ns tPLZ Switch Turn-Off Delay(2) 1.5 5.5 ns tPHZ BEA, BEB to Ax, Bx Ax to Bx, Bx to Ax 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 1.25ns 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 IDTQS32384 HIGH-SPEED CMOS 10-BIT BUS SWITCH 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) SO Q Small Outline IC Quarter Size Outline Package 32384 High Speed CMOS 10-Bit Bus Switch 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