SN54ALS151, SN74ALS151, SN74AS151
1-OF-8 DATA SELECTORS/MULTIPLEXERS
SDAS205A – APRIL 1982 – REVISED DECEMBER 1994
Copyright 1994, Texas Instruments Incorporated
1
POST OFFICE BOX 655303 • DALLAS, TEXAS 75265
• 8-Line to 1-Line Multiplexers Can Perform
as:
Boolean Function Generators
Parallel-to-Serial Converters
Data Source Selectors
• Input Clamping Diodes Simplify System
Design
• Package Options Include Plastic
Small-Outline (D) Packages, Ceramic Chip
Carriers (FK), and Standard Plastic (N) and
Ceramic (J) 300-mil DIPs
description
These data selectors/multiplexers provide full
binary decoding to select one-of-eight data
sources. The strobe (G
) input must be at a low
logic level to enable the inputs. A high level at the
strobe terminal forces the W output high and the
Y output low.
The SN54ALS151 is characterized for operation
over the full military temperature range of –55°C
to 125°C. The SN74ALS151 and SN74AS151 are
characterized for operation from 0°C to 70°C.
FUNCTION TABLE
INPUTS
SELECT
STROBE
C B A
G
Y W
X X X H L H
L LL L D0 D0
L LH L D1 D1
L HL L D2 D2
L HH L D3 D3
H LL L D4 D4
H LH L D5 D5
H HL L D6 D6
H H H L D7 D7
H = high level, L = low level, X = irrelevant
D0, D1, . . . D7 = the level of the respective D input
SN54ALS151 ...J PACKAGE
SN74ALS151, SN74AS151 ...D OR N PACKAGE
(TOP VIEW)
3212019
910111213
4
5
6
7
8
18
17
16
15
14
D5
D6
NC
D7
A
D1
D0
NC
Y
W
SN54ALS151 . . . FK PACKAGE
(TOP VIEW)
D2
D3
NC
C
B
D4
G
GND
NC
NC – No internal connection
V
CC
1
2
3
4
5
6
7
8
16
15
14
13
12
11
10
9
D3
D2
D1
D0
Y
W
G
GND
V
CC
D4
D5
D6
D7
A
B
C
PRODUCTION DATA information is current as of publication date.
Products conform to specifications per the terms of Texas Instruments
standard warranty. Production processing does not necessarily include
testing of all parameters.
