CY54FCT157T, CY74FCT157T
QUAD 2-INPUT MULTIPLEXERS
WITH 3-STATE OUTPUTS
SCCS014B – MAY 1994 – REVISED NOVEMBER 2001
PIN DESCRIPTION
NAME
S
E
I0
I1
Y
DESCRIPTION
Common select input
Enable inputs (active low)
Data inputs from source 0
Data inputs from source 1
Noninverted outputs
ORDERING INFORMATION
TA
PACKAGE†
QSOP – Q
SOIC – SO
–40°C to 85°C
40°C
QSOP – Q
SOIC – SO
–55°C to 125°C
LCC – L
Tape and reel
Tube
Tape and reel
Tape and reel
Tube
Tape and reel
Tube
SPEED
(ns)
4.3
4.3
4.3
5
5
5
5.8
ORDERABLE
PART NUMBER
CY74FCT157CTQCT
CY74FCT157CTSOC
CY74FCT157CTSOCT
CY74FCT157ATQCT
CY74FCT157ATSOC
CY74FCT157ATSOCT
CY54FCT157ATLMB
TOP-SIDE
MARKING
FT157-3
FCT157C
FT157-1
FCT157A
† Package drawings, standard packing quantities, thermal data, symbolization, and PCB design guidelines are
available at www.ti.com/sc/package.
FUNCTION TABLE
INPUTS
E
H
L
L
L
L
S
X
H
H
L
L
I0
X
X
X
L
H
I1
X
L
H
X
X
OUTPUT
Y
L
L
H
L
H
H = High logic level, L = Low logic level,
X = Don’t care
2
POST OFFICE BOX 655303
•
DALLAS, TEXAS 75265
TI [ TEXAS INSTRUMENTS ]
