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Details, datasheet, quote on part number:QS32257
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Datasheet text preview:
IDTQS32257 HIGH-SPEED CMOS QUICKSWITCH QUAD 2:1 MUX/DEMUX
INDUSTRIAL TEMPERATURE RANGE
QUICKSWITCH® PRODUCTS HIGH-SPEED CMOS QUICKSWITCH QUAD 2:MUX/DEMUX
.EATURES:
· · · · · · · · Enhanced N channel FET with no inherent diode to Vcc 5 bidirectional switches connect inputs to outputs Pin compatible with the 74F257, 74FCT257, and 74FCT257T Zero propagation delay, zero ground bounce Undershoot clamp diodes on all switch and control inputs 25 resistors for low noise TTL-compatible control inputs Available in SOIC, QSOP, and S1 packages
IDTQS32257
DESCRIPTION:
The QS32257 is a high-speed CMOS LVTTL-compatible Quad 2:1 multiplexer/demultiplexer. The QS32257 is a function and pinout compatible QuickSwitch version of the 74F257, 74FCT257, and the 74ALS/AS/LS257 Quad 2:1 multiplexers. The QS32257 has 25 series resistors to reduce ground noise. Mux/Demux devices provide an order of magnitude faster speed than equivalent logic devices. The QS32257 is characterized for operation at -40°C to +85°C.
APPLICATIONS:
· · · · · Logic replacement (data processing) Video, audio, graphics switching, muxing Hot-swapping, hot-docking Voltage translation (5V to 3.3V) Bus funneling
.UNCTIONAL BLOCK DIAGRAM
S
E I0A YA I1A I0B YB I1B I0C YC I1C I0D YD I1D
The IDT logo is a registered trademark of Integrated Device Technology, Inc.
INDUSTRIAL TEMPERATURE RANGE
1
c 2002 Integrated Device Technology, Inc.
MARCH 2002
DSC-5750/3
IDTQS32257 HIGH-SPEED CMOS QUICKSWITCH QUAD 2:1 MUX/DEMUX
INDUSTRIAL TEMPERATURE RANGE
PIN CON.IGURATION
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 = 85°C) 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
S I0A I1A YA I0B I1B YB GND
1 2 3
16 15 14
VCC E I0D I1D YD I0C I1C YC
VTERM(3) VAC IOUT PMAX TSTG
4 SO16-1 13 SO16-7 5 SO16-8 12 6 11 7 8
SOIC/ QSOP/ S1 TOP VIEW
10 9
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 = +25°C, f = 1.0MHZ, VIN = 0V, VOUT = 0V)
Pins Control Pins Quickswitch Channels (Switch OFF) Demux Mux Typ. 4 5 8 Max. (1) 5 7 9 Unit pF pF
NOTE: 1 . This parameter is measured at characterization but not tested.
PIN DESCRIPTION
Pin Names Ixx S E YA - YD I/O I I I O Data Inputs Select Input Enable Input Data Outputs Description
.UNCTION TABLE(1)
Enable E H L L S X L H S1 Hi-Z I0A I1A Outputs S0 Hi-Z I0B I1B YA Hi-Z I0C I1C YB Hi-Z I0D I1D Function Disconnected Select 0 Select 1
NOTE: 1 . H = HIGH Voltage Level L = LOW Voltage Level X = Don't Care Z = High-Impedance
2
IDTQS32257 HIGH-SPEED CMOS QUICKSWITCH QUAD 2:1 MUX/DEMUX
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 ±5%
Symbol VIH VIL IIN IO Z RON(3) VP Parameter Input HIGH Level Input LOW Level 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 VOUT VCC, Switches OFF VCC = Min., VIN = 0V, ION = 30mA VCC = Min., VIN = 2.4V, ION =15mA VIN = VCC = 5V, IOUT = -5µA Min. 2 -- -- -- 12 15 3.7 Typ.(1) -- -- -- ±0.001 17 19 4 Max. -- 0.8 ±1 ±1 40 40 4.2 Unit V V µA µA V
Input LeakageCurrent (Control Inputs)(2) 0V VIN VCC
NOTES: 1 . Typical values are at VCC = 5.0V, TA = 25°C. 2 . Pass Voltage is guaranteed but not production tested. 3 . ROUT changed on March 8, 2002. See rear page for more information.
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
V IN (Volts)
3
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