Texas Instruments SN74ALS157AN Manual

Texas Instruments Ikke kategoriseret SN74ALS157AN

Læs gratis den danske manual til Texas Instruments SN74ALS157AN (24 sider) i kategorien Ikke kategoriseret. Denne vejledning er vurderet som hjælpsom af 43 personer og har en gennemsnitlig bedømmelse på 4.6 stjerner ud af 22 anmeldelser. Har du et spørgsmål om Texas Instruments SN74ALS157AN, eller vil du spørge andre brugere om produktet?

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


SDAS081C − APRIL 1982 − REVISED DECEMBER 1994
Copyright 1994, Texas Instruments Incorporated
1
POST OFFICE BOX 655303 • DALLAS, TEXAS 75265
POST OFFICE BOX 1443 • HOUSTON, TEXAS 77251−1443
•Buffered Inputs and Outputs
•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 contain
inverters and drivers to supply full data selection
to the four output gates. A separate strobe (G)
input is provided. A 4-bit word is selected from one
of two sources and is routed to the four outputs.
The ′ALS157A and SN74AS157 present true
data. The ′ALS158 and SN74AS158 present
inverted data to minimize propagation delay time.
The SN54ALS157A and SN54ALS158 are
characterized for operation over the full military
temperature range of −55°C to 125°C. The
SN74ALS157A, SN74ALS158, SN74AS157, and
SN74AS158 are characterized for operation from
0 C.°C to 70°
FUNCTION TABLE
INPUTS OUTPUT Y
G
A /B
DATA ′
ALS157A
′
ALS158
G A /B A B
ALS157A
SN74AS157
ALS158
SN74AS158
H X X X L H
L L L X L H
L L H X H L
L HH X L L
L H X H H L
SN54ALS157A, SN54ALS158 . . . J PACKAGE
SN74ALS157A, SN74ALS158,
SN74AS157, SN74AS158 ...D OR N PACKAGE
(TOP VIEW)
3 2 1 20 19
9 10 11 12 13
4
5
6
7
8
18
17
16
15
14
4A
4B
NC
4Y
3A
1B
1Y
NC
2A
2B
SN54ALS157A, SN54ALS158 . . . FK PACKAGE
(TOP VIEW)
1A
A/B
NC
3Y
3B G
2Y
GND
NC V
CC
1
2
3
4
5
6
7
8
16
15
14
13
12
11
10
9
A/B
1A
1B
1Y
2A
2B
2Y
GND
VCC
G
4A
4B
4Y
3A
3B
3Y
NC − No internal connection
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%$#,#!, 0#!!#$1- !,'&$ )!&(%%2 ,(% $ (&(%%#!+1 &+',(
$(%$2  #++ )#!#"($(!%-



SDAS081C − APRIL 1982 − REVISED DECEMBER 1994
2POST OFFICE BOX 655303 • DALLAS, TEXAS 75265
POST OFFICE BOX 1443
• HOUSTON, TEXAS 77251−1443
logic symbols†
G
MUX
2
1A
1
3
1B
EN
15
G1
1
1Y
4
5
2A
6
2B 2Y
7
11
3A
10
3B 3Y
9
14
4A 13
4B 4Y
12
A /B
1
G
MUX
2
1A
1
3
1B
EN
15
G1
1
1Y
4
5
2A 6
2B 2Y
7
11
3A 10
3B 3Y
9
14
4A
13
4B 4Y
12
A /B
1
′
ALS157A, SN74AS157
′
ALS158, SN74AS158
†These symbols are in accordance with ANSI/IEEE Std 91-1984 and IEC Publication 617-12.
Pin numbers shown are for the D, J, and N packages.

Produkt Specifikationer

Mærke: Texas Instruments
Kategori: Ikke kategoriseret
Model: SN74ALS157AN

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