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CY74FCT257T Datasheet(PDF) 2 Page - Texas Instruments

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Part No. CY74FCT257T
Description  QUAD 2-INPUT MULTIPLEXER WITH 3-STATE OUTPUTS
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Maker  TI [Texas Instruments]
Homepage  http://www.ti.com
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CY74FCT257T Datasheet(HTML) 2 Page - Texas Instruments

 
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CY74FCT257T
QUAD 2-INPUT MULTIPLEXER
WITH 3-STATE OUTPUTS
SCCS019D – MAY 1994 – REVISED NOVEMBER 2001
2
POST OFFICE BOX 655303
DALLAS, TEXAS 75265
ORDERING INFORMATION
TA
PACKAGE†
SPEED
(ns)
ORDERABLE
PART NUMBER
TOP-SIDE
MARKING
QSOP – Q
Tape and reel
4.3
CY74FCT257CTQCT
FT257-3
SOIC
SO
Tube
4.3
CY74FCT257CTSOC
FCT257C
–40
°C to 85°C
SOIC – SO
Tape and reel
4.3
CY74FCT257CTSOCT
FCT257C
QSOP – Q
Tape and reel
5
CY74FCT257ATQCT
FT257-1
QSOP – Q
Tape and reel
6
CY74FCT257TQCT
FT257
† Package drawings, standard packing quantities, thermal data, symbolization, and PCB design guidelines
are available at www.ti.com/sc/package.
FUNCTION TABLE
INPUTS
OUTPUT
OE
S
I0
I1
Y
H
X
X
X
Z
L
HX
L
L
L
HX
H
H
L
LL
X
L
L
L
H
X
H
H = High logic level, L = Low logic level,
X = Don’t care, Z = High-impedance state
logic diagram
S
OE
4
2
3
7
5
6
12
14
13
9
11
10
1
15
I0a
I1a
I0b
I1b
I0c
I1c
I0d
I1d
Ya
Yb
Yc
Yd


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