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| IDTQS3253 HIGH-SPEED CMOS QUICKSWITCH DUAL 4:1 MUX/DEMUX INDUSTRIAL TEMPERATURE RANGE QUICKSWITCH(R) PRODUCTS HIGH-SPEED CMOS QUICKSWITCH DUAL 4:1 MUX/DEMUX FEATURES: * * * * * * * IDTQS3253 DESCRIPTION: Enhanced N channel FET with no inherent diode to Vcc 5 bidirectional switches connect inputs to outputs Pin compatible with the 74F253, 74FCT253, and 74FCT253T Zero propagation delay, zero ground bounce Undershoot clamp diodes on all switch and control inputs TTL-compatible control inputs Available in SOIC, QSOP, and S1 packages The QS3253 is a high-speed CMOS TTL-compatible dual 4:1 multiplexer/demultiplexer with 3-state outputs. The QS3253 is function and pinout compatible version of the 74F253, 74FCT253, and the 74ALS/AS/ LS253 dual 4:1 multiplexers. The low ON resistance of the QS3253 allows inputs to be connected to outputs without adding propagation delay and without generating additional ground bounce noise. Mux/Demux devices provide an order of magnitude faster speed than equivalent logic devices. The QS3253 is characterized for operation at -40C to +85C. APPLICATIONS: * * * * * * Logic replacement Video, audio, graphics switching, muxing Hot-swapping, hot-docking Voltage translation (5V to 3.3V) Power conservation Bus funneling FUNCTIONAL BLOCK DIAGRAM S0 S1 EA EB I0A I1A YA I2A I3A I0B YB I1B I2B I3B The IDT logo is a registered trademark of Integrated Device Technology, Inc. INDUSTRIAL TEMPERATURE RANGE 1 c 2001 Integrated Device Technology, Inc. AUGUST 2001 DSC-5755/3 IDTQS3253 HIGH-SPEED CMOS QUICKSWITCH DUAL 4:1 MUX/DEMUX INDUSTRIAL TEMPERATURE RANGE PIN CONFIGURATION ABSOLUTE MAXIMUM RATINGS(1) Symbol VTERM(2) VTERM(3) Description Supply Voltage to Ground DC Switch Voltage Vs DC Input Voltage VIN AC Input Voltage (pulse width 20ns) DC Output Current Maximum Power Dissipation (TA = 85C) Storage Temperature Max -0.5 to +7 -0.5 to +7 -0.5 to +7 -3 120 0.5 -65 to +150 Unit V V V V mA W C EA S1 I3A I2A I1A I0A YA GND 1 2 3 4 5 6 7 8 16 15 14 13 12 11 10 9 VCC EB S0 I3B I2B I1B I0B YB VTERM(3) VAC IOUT PMAX TSTG 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. CAPACITANCE (TA = +25C, f = 1MHz, VIN = 0V, VOUT = 0V) Pins Typ. 4 Demux Mux 5 14 Max. (1) 5 7 16 Unit pF pF SOIC/ QSOP/ S1 TOP VIEW Control Inputs Quickswitch Channels (Switch OFF) NOTE: 1. This parameter is guaranteed but not production tested. PIN DESCRIPTION Pin Names Ixx S0 - S2 EA, EB YA, YB I/O I I I O Data Inputs Select Inputs Enable Input Data Output Description FUNCTION TABLE(1) Enable EA H X L L L L EB X H L L L L X X L L H H Select S1 S0 X X L H L H Outputs YA Hi-Z X I0A I1A I2A I3A YB X Hi-Z I0B I1B I2B I3B Function Disconnected Disconnected S1 - 0 = 0 S1 - 0 = 1 S1 - 0 = 2 S1 - 0 = 3 NOTE: 1. H = HIGH Voltage Level L = LOW Voltage Level X = Don't Care Z = High-Impedence 2 IDTQS3253 HIGH-SPEED CMOS QUICKSWITCH DUAL 4:1 MUX/DEMUX INDUSTRIAL TEMPERATURE RANGE DC ELECTRICAL CHARACTERISTICS OVER OPERATING RANGE Following Conditions Apply Unless Otherwise Specified: Industrial: TA = -40C to +85C, VCC = 5.0V 5% Symbol VIH VIL IIN IOZ RON VP Parameter Input HIGH Level Input LOW Level Input LeakageCurrent (Control Inputs) Off-State Output Current (Hi-Z) Switch ON Resistance Pass Voltage(2) Test Conditions Guaranteed Logic HIGH for Control Pins Guaranteed Logic LOW for Control Pins 0V VIN VCC 0V VOUT VCC VCC = Min., VIN = 0V, ION = 30mA VCC = Min., VIN = 2.4V, ION =15mA VIN = VCC = 5V, IOUT = -5A Min. 2 -- -- -- -- -- 3.7 Typ.(1) -- -- -- -- 5 10 4 Max. -- 0.8 1 1 7 15 4.2 Unit V V A A V NOTES: 1. Typical values are at VCC = 5.0V, TA = 25C. 2. Pass Voltage is guaranteed but not production tested. TYPICAL ON RESISTANCE vs VIN AT VCC = 5V 16 RON (ohms) 14 12 10 8 6 4 2 0 0.0 0.5 1.0 1.5 2.0 2.5 3.0 3.5 VIN (Volts) 3 IDTQS3253 HIGH-SPEED CMOS QUICKSWITCH DUAL 4:1 MUX/DEMUX INDUSTRIAL TEMPERATURE RANGE POWER SUPPLY CHARACTERISTICS Symbol ICCQ ICC ICCD Parameter Quiescent Power Supply Current Power Supply Current per Control Input HIGH (2) Dynamic Power Supply Current per MHz(3) Test Conditions(1) VCC = Max., VIN = GND or Vcc, f = 0 VCC = Max., VIN = 3.4V, f = 0 VCC = Max., I and Y pins open 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). I and Y 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 I and Y inputs generate no significant AC or DC currents as they transition. This parameter is guaranteed but not production tested. Max. 3 1.5 0.25 Unit A mA mA/MHz SWITCHING CHARACTERISTICS OVER OPERATING RANGE TA = -40C to +85C, VCC = 5.0V 5%; CLOAD = 50pF, RLOAD = 500 unless otherwise noted. Symbol tPLH tPHL tPZL tPZH tPZL tPZH tPLZ tPHZ Data Propagation Delay (2,3) Ix to Y Switch Turn-on Delay Sx to Y Switch Turn-on Delay Ex to Y Switch Turn-off Delay (2) Ex to Y, Sx to Y 0.5 -- 6 ns Parameter Min. (1) -- 0.5 0.5 Typ. -- -- -- Max. 0.25 6.6 6 Unit ns ns ns 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 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 IDTQS3253 HIGH-SPEED CMOS QUICKSWITCH DUAL 4:1 MUX/DEMUX INDUSTRIAL TEMPERATURE RANGE ORDERING INFORMATION IDTQS XXXXX Device Type XX Package SO Q QG S1 S1G Small Outline IC Quarter Size Outline Package QSOP - Green Quarter Size Outline Package S1 QSOP - Green 3253 High Speed CMOS Quickswitch Dual 4:1 Mux/Demux 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 for Tech Support: logichelp@idt.com (408) 654-6459 5 |
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