IDTQS3R800 HIGH-SPEED CMOS 10-BIT LOW RESISTANCE QUICKSWITCH INDUSTRIAL TEMPERATURE RANGE QUICKSWITCH® PRODUCTS HIGH-SPEED CMOS 10-BIT LOW RESISTANCE QUICKSWITCH WITH PRECHARGED OUTPUTS DESCRIPTION: FEATURES: − − − − − − − IDTQS3R800 2.5Ω bidirectional switches connect inputs to outputs Zero propagation delay Undershoot clamp diodes on all switch and control pins Outputs precharge voltage to minimize signal distortion during live insertion TTL-compatible input and output levels Zero ground bounce Available in SOIC and QSOP Packages The QS3R800 is a 10-bit high-speed CMOS bus switch controlled by a single enable (ON) input. When ON is low, the switch is on and port A is connected to port B. When ON is high, the switch between port A and port B is open and port B is precharged to the bias voltage. The low ON resistance (2.5Ω) of the QS3R800 allows inputs to be connected to outputs without adding propagation delay and without generating additional noise. The QS3R800 also precharges the B port to a user-selectable bias voltage to minimize live-insertion noise, which is useful in VME bus applications. The QS3R800 is characterized for operation at -40°C to +85°C. FUNCTIONAL BLOCK DIAGRAM V B IAS A0 B0 A9 B9 ON INDUSTRIAL TEMPERATURE RANGE NOVEMBER 1999 1 c 1999 Integrated Device Technology, Inc. DSC-5539/- IDTQS3R800 HIGH-SPEED CMOS 10-BIT LOW RESISTANCE QUICKSWITCH INDUSTRIAL TEMPERATURE RANGE PIN CONFIGURATION (1) ABSOLUTE MAXIMUM RATINGS Max. Unit ON 1 24 Vcc Symbol VTERM(2) Supply Voltage to Ground – 0.5 to +7 V A0 2 23 B0 VBIAS Bias Voltage Range – 0.5 to VCC V VTERM(3) DC Input Voltage VIN – 0.5 to VCC + 0.5 V VAC AC Input Voltage (pulse width ≤20ns) -3 V IOUT DC Output Current 128 mA IIK Input Clamp Current -50 mA PMAX Maximum Power Dissipation .5 W TSTG Storage Temperature – 65 to +150 °C A1 3 22 B1 A2 4 21 B2 A3 5 20 B3 A4 6 19 B4 A5 7 18 B5 A6 8 17 B6 A7 9 16 B7 A8 10 15 B8 A9 11 14 B9 GND 12 13 V B IAS SO24-2 SO24-8 Description 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 = +25OC, f = 1.0MHz, VIN = 0V, VOUT = 0V) SOIC/ QSOP TOP VIEW Pins Control Inputs Typ. 3 Max. (1) 4 Unit pF Quickswitch Channels (Switch OFF) 5 6 pF NOTE: 1. This parameter is guaranteed at characterization but not tested. PIN DESCRIPTION Pin Names A0 - A9 I/O I/O Description Bus A B0 - B9 I/O Bus B ON I Bus Switch Enable VBIAS I Bias Voltage FUNCTION TABLE(1) ON L B0-B9 A0 - A9 Connect H VBIAS Precharge NOTE: 1. H = HIGH Voltage Level L = LOW Voltage Level 2 Function IDTQS3R800 HIGH-SPEED CMOS 10-BIT LOW RESISTANCE QUICKSWITCH 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 ± 10% Symbol VIH Parameter Input HIGH Voltage Test Conditions Guaranteed Logic HIGH for Control Pins Min. 2 Typ.(1) — Max. — Unit V VIL Input LOW Voltage Guaranteed Logic LOW for Control Pins — — 0.8 V VBIAS Bias Voltage Vcc = 5V 1.3 — Vcc V IO Bias Current Vcc = 4.5V, VBIAS = 2.4V, VO = 0, ON = HIGH 0.25 — — mA IIN Input Leakage Current (Control Inputs) 0V ≤ VIN ≤ Vcc — — ±1 µA IOZ Off-State Current (Hi-Z) 0V ≤ VOUT ≤ Vcc — — ±1 µA RON Switch On Resistance (2) Vcc = Min., VIN = 0V, ION = 30mA — 2.5 5 Ω RON Switch On Resistance (2) Vcc = Min., VIN = 2.4V, ION = 15mA — 4 8.5 Ω NOTES: 1. Typical values are at VCC = 5.0V, TA = 25°C. 2. During input/output leakage, testing all pins are at HIGH or LOW state. TYPICAL ON RESISTANCE vs VIN AT VCC = 5V 16 R ON (ohms) 14 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 IDTQS3R800 HIGH-SPEED CMOS 10-BIT LOW RESISTANCE QUICKSWITCH INDUSTRIAL TEMPERATURE RANGE POWER SUPPLY CHARACTERISTICS Symbol ICCQ Parameter Quiescent Power Supply Current Test Conditions(1) VCC = Max., VIN = GND or Vcc, f = 0 Typ.(2) 0.2 Max. 3 Unit µA ∆ICC Power Supply Current per Control Input HIGH ICCD Dynamic Power Supply Current per MHz(4) VCC = Max., VIN = 3.4V (3), f = 0 — 2.5 mA VCC = Max., A and B pins open Data inputs = GND Control Input Toggling at 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. Typical values are at VCC = 5.0V, TA = 25°C. 3. Per TLL driven input (VIN = 3.4V, control inputs only). A and B pins do not contribute to ∆Icc. 4. 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 ± 10% CLOAD = 50pF, RLOAD = 500Ω unless otherwise noted. Symbol tPLH tPHL tPZL tPZH tPLZ tPHZ Parameter Data Propagation Delay (2, 3) A to B or B to A Switch Turn-On Delay ON to A or B Switch Turn-Off Delay (2) ON to A or B Min. (1) Typ. Max. Unit — — 0.12 ns 1.5 — 7.5 ns 1.5 — 6.5 ns NOTES: 1. Minimums guaranteed but not tested. 2. This parameter is guaranteed but not 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 for 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 IDTQS3R800 HIGH-SPEED CMOS 10-BIT LOW RESISTANCE QUICKSWITCH INDUSTRIAL TEMPERATURE RANGE ORDERING INFORMATION IDTQS XXXXX XX Device Type Package X Process Blank Industrial (-40°C to +85°C ) SO Q Small Outline IC (SO24-2) Quarter Size Outline Package (SO24-8) 3R800 High Speed CM OS 10-Bit Low Resistance QuickSwitch with Precharged Outputs 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* *To search for sales office near you, please click the sales button found on our home page or dial the 800# above and press 2. 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