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| IDTQS32253 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: - - - - - - - - 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 25 resistors for low noise Available in QSOP and SOIC Packages IDTQS32253 DESCRIPTION: The QS32253 is a high-speed CMOS TTL-compatible dual 4:1 multiplexer/demultiplexer with 3-state outputs. The QS32253 is function and pinout compatible version of the 74F253, 74FCT253, and the 74ALS/AS/ LS253 dual 4:1 multiplexers. The QS32253 has 25 resistors to reduce ground bounce noise. Mux/Demux devices provide an order of magnitude faster speed than equivalent logic devices. The QS32253 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 INDUSTRIAL TEMPERATURE RANGE 1 c 1999 Integrated Device Technology, Inc. APRIL 2000 DSC-5749/- IDTQS32253 HIGH-SPEED CMOS QUICKSWITCH DUAL 4:1 MUX/DEMUX INDUSTRIAL TEMPERATURE RANGE PIN CONFIGURATION ABSOLUTE MAXIMUM RATINGS 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 (1) Unit V V V V mA W C Max. - 0.5 to +7 - 0.5 to +7 - 0.5 to +7 -3 120 0.5 - 65 to +150 EA S1 I3A I2A I1A I0A YA G ND 1 2 3 4 5 6 7 8 16 15 14 SO 16-1 13 SO 16-7 12 11 10 9 VCC EB S0 I3B I2B I1B I0B YB VTERM(3) VAC IOUT PMAX TSTG 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) Pins Control Pins Quickswitch Channels (Switch OFF) Demux Mux Typ. 4 5 14 Max. (1) 5 7 16 Unit pF pF pF SOIC/ QSOP TOP VIEW NOTE: 1. This parameter is guaranteed but not production tested. PIN DESCRIPTION Pin Names Ixx S0, S1 EA, EB YA, YB I/O I I I O Description Data Inputs Select Inputs Enable Inputs Data Outputs FUNCTION TABLE(1) Enable EA H X L L L L EB X H L L L L S1 X X L L H H Select S0 X X L H L H YA Hi-Z X I0A I1A I2A I3A Outputs 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 IDTQS32253 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 RON VP Parameter Input HIGH Voltage Input LOW Voltage Input Leakage Current (Control Off-State Current (Hi-Z) Switch ON Resistance Switch ON Resistance Pass Voltage (2) Inputs) (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 -- -- -- 20 20 3.7 Typ.(1) -- -- -- -- 28 35 4 Max. -- 0.8 1 1 40 48 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 80 RON (ohms) 70 60 50 40 30 20 10 0 0.0 0.5 1.0 1.5 2.0 2.5 3.0 3.5 VIN (Volts) 3 IDTQS32253 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 Max. 3 1.5 0.25 Unit A mA mA/MHz 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. 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 Parameter Data Propagation Delay (2,3) In to Y Switch Turn-on Delay Sn to Y Switch Turn-on Delay EN to Y Switch Turn-off Delay (2) EN to Y, Sn to Y Min. (1) -- 0.5 0.5 0.5 Typ. -- -- -- -- Max. 1.25 (3) 7 7 6 Unit ns 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 1.25ns 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 IDTQS32253 HIGH-SPEED CMOS QUICKSWITCH DUAL 4:1 MUX/DEMUX INDUSTRIAL TEMPERATURE RANGE ORDERING INFORMATION IDTQS XXXXX Device Type XX Package X Process Blank Industrial (-40C to +85C) Q SO Quarter Size Outline Package (SO16-7) Small Outline IC (SO16-1) 32253 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* *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 |
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