IDTQS3800 HIGH-SPEED CMOS 10-BIT QUICKSWITCH WITH PRECHARGED OUTPUTS INDUSTRIAL TEMPERATURE RANGE QUICKSWITCH(R) PRODUCTS HIGH-SPEED CMOS 10-BIT QUICKSWITCH WITH PRECHARGED OUTPUTS DESCRIPTION FEATURES: - - - - - - IDTQS3800 5 bidirectional switches connect inputs to outputs Zero propagation delay, zero ground bounce Undershoot clamp diodes on all switch and control inputs Outputs precharge voltage to minimize signal distortion during live insertion TTL-compatible input and output levels Available in QSOP, SOIC, and TSSOP Packages The QS3800 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 (5) of the QS3800 allows inputs to be connected to outputs without adding propagation delay and without generating additional noise. The QS3800 also precharges the B port to a user-selectable bias voltage to minimize liveinsertion noise which is uselful in VME bus applications. The QS3800 is characterized for operation at -40C to +85C. FUNCTIONAL BLOCK DIAGRAM V B IA S A0 B0 A9 B9 ON INDUSTRIAL TEMPERATURE RANGE MAY 2000 1 c 1999 Integrated Device Technology, Inc. DSC-5766/- IDTQS3800 HIGH-SPEED CMOS 10-BIT QUICKSWITCH WITH PRECHARGED OUTPUTS PIN CONFIGURATION INDUSTRIAL TEMPERATURE RANGE ABSOLUTE MAXIMUM RATINGS Symbol (1) VTERM(2) Description Supply Voltage to Ground Max. - 0.5 to +7 Unit V VBIAS Bias Voltage Range - 0.5 to Vcc V VTERM(3) DC Input Voltage VIN V VAC AC Input Voltage (pulse width 20ns) - 0.5 to Vcc + 0.5 -3 V IOUT DC Output Current 120 mA ON 1 24 VCC A0 2 23 B0 A1 3 22 B1 A2 4 21 B2 Input Clamp Current -50 mA A3 5 20 PMAX Maximum Power Dissipation (TA = 85C) 0.5 W A4 6 B4 TSTG Storage Temperature - 65 to +150 C A5 7 SO 24-2 SO 24-8 19 SO 24-9 18 B3 A6 8 17 B6 A7 9 16 B7 A8 10 15 B8 A9 11 14 B9 G ND 12 13 V BIAS 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. B5 CAPACITANCE (TA = +25OC, f = 1.0MHz, VIN = 0V, VOUT = 0V) SOIC/ QSOP/ TSSOP TOP VIEW Pins Control Pins Typ. 3 Max. (1) 5 Unit pF Quickswitch Channels (Switch OFF) 5 7 pF NOTE: 1. This parameter is guaranteed but not production tested. PIN DESCRIPTION Pin Names A0 - A9 I/O I/O Bus A B0 - B9 I/O Bus B ON I Bus Switch Enable VBIAS I Bias Voltage FUNCTION TABLE (1) ON B 0 - B9 Function L A0 - A9 VBIAS Connect H NOTE: 1. H = HIGH Voltage Level L = LOW Voltage Level 2 Description Disconnect IDTQS3800 HIGH-SPEED CMOS 10-BIT QUICKSWITCH WITH PRECHARGED OUTPUTS INDUSTRIAL TEMPERATURE RANGE DC ELECTRICAL CHARACTERISTICS OVER OPERATING RANGE Following Conditions Apply Unless Otherwise Specified: Industrial: TA = -40C to +85C, VCC = 5.0V 10% Min. 2 Typ.(1) -- Symbol VIH Parameter Input HIGH Voltage Test Conditions Guaranteed Logic HIGH for Control Pins 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 A IOZ Off-State Current (Hi-Z) 0V VOUT Vcc -- -- 1 A RON Switch ON Resistance Vcc = Min., VIN = 0V, ION = 30mA -- 5 7 RON Switch ON Resistance Vcc = Min., VIN = 2.4V, ION = 15mA -- 10 15 NOTE: 1. Typical values are at VCC = 5.0V, TA = 25C. TYPICAL ON RESISTANCE vs VIN AT VCC = 5V 16 14 R ON 12 (ohms) 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 Max. -- Unit V IDTQS3800 HIGH-SPEED CMOS 10-BIT QUICKSWITCH WITH PRECHARGED OUTPUTS 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 ICC Power Supply Current per Control Input HIGH VCC = Max., VIN = 3.4V(3), f = 0 -- 2.5 mA ICCD Dynamic Power Supply Current per MHz(4) VCC = Max., A and B pins open, Data Inputs = GND Control Inputs Toggling at 50% Duty Cycle -- 0.25 mA/MHz Max. 3 Unit A 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, 25C ambient. 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 = -40C to +85C, VCC = 5.0V 10% CLOAD = 50pF, RLOAD = 500 unless otherwise noted. Symbol tPLH tPHL tPZL tPZH tPLZ tPHZ Parameter Data Propagation Delay (1,2) A to B or B to A Switch Turn-on Delay ON to A or B Switch Turn-off Delay (1) ON to A or B Test Conditions VBIAS = 3V, VBIAS = GND VBIAS = 3V, VBIAS = GND Min. (1) Typ. Max. Unit -- 0.25 -- ns 1.5 -- 7.5 ns 1.5 -- 6.5 ns NOTES: 1. This parameter is 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. 4 IDTQS3800 HIGH-SPEED CMOS 10-BIT QUICKSWITCH WITH PRECHARGED OUTPUTS INDUSTRIAL TEMPERATURE RANGE ORDERING INFORMATION ID TQ S XXXXX XX Device Type Package X Process Blank Industrial (-40C to +85C ) SO Q PA Sm all O utline IC (SO 24-2) Quarter-Size Outline Package (SO24-8) Thin Shrink Sm all O utline Package (SO24-9) 3800 High Speed C M OS 10-Bit Q uickSw itch w ith Precharged O utputs 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. The IDT logo, QuickSwitch, and SynchroSwitch are registered trademarks of Integrated Device Technology, Inc. 5