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SN54HCT257 Datasheet(PDF) 2 Page - Texas Instruments

Part No. SN54HCT257
Description  QUADRUPLE 2-LINE TO 1-LINE DATA SELECTORS/MULTIPLEXERS WITH 3-STATE OUTPUTS
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Manufacturer  TI [Texas Instruments]
Direct Link  http://www.ti.com
Logo TI - Texas Instruments

SN54HCT257 Datasheet(HTML) 2 Page - Texas Instruments

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SN54HCT257, SN74HCT257
QUADRUPLE 2LINE TO 1LINE DATA SELECTORS/MULTIPLEXERS
WITH 3STATE OUTPUTS
SCLS072D − NOVEMBER 1988 − REVISED SEPTEMBER 2003
2
POST OFFICE BOX 655303
DALLAS, TEXAS 75265
FUNCTION TABLE
INPUTS
OUTPUT
OE
SELECT
DATA
OUTPUT
Y
OE
SELECT
A/B
A
B
Y
H
X
X
X
Z
L
L
L
XL
L
L
H
XH
L
H
X
LL
L
H
X
H
H
logic diagram (positive logic)
4Y
3Y
2Y
1Y
A/B
OE
4B
4A
3B
3A
2B
2A
1B
1A
4
2
3
7
5
6
9
11
10
12
14
13
1
15
Pin numbers shown are for the D, J, and N packages.


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