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Part: QS3253
Category:
Logic
-> Bus Interface
Description: High-speed CMOS Quickswitch Dual 4:1 Mux/demux
Company: Integrated Device Technology, Inc.
Datasheet: Download QS3253 datasheet File size : 188 kB
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Datasheet text preview:
IDTQS3253 HIGH-SPEED CMOS QUICKSWITCH DUAL 4:1 MUX/DEMUX
INDUSTRIAL TEMPERATURE RANGE
QUICKSWITCH® PRODUCTS HIGH-SPEED CMOS QUICKSWITCH DUAL 4:1 MUX/DEMUX
FEATURES:
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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 -40°C to +85°C.
APPLICATIONS:
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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
I0 A I1 A YA I2 A I3 A I0 B YB I1 B I2B I3B
The IDT logo is a registered trademark of Integrated Device Technology, Inc.
INDUSTRIAL TEMPERATURE RANGE
c 2001 Integrated Device Technology, Inc.
AUGUST 2001
1
DSC-5755/1
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 = 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
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 = +25°C, 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 = 40°C to +85°C, VCC = 5.0V ±5%
Symbol VIH VIL IIN IO Z 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 = -5µA Min. 2 -- -- -- -- -- 3.7 Typ.(1) -- -- -- -- 5 10 4 Max. -- 0.8 ±1 ±1 7 15 4.2 Unit V V µA µA V
NOTES: 1 . Typical values are at VCC = 5.0V, TA = 25°C. 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
V IN (Volts)
3
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QS-1 QS-2
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