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DM74AS21 Datasheet

  • DM74AS21

  • Dual 4-Input AND Gate

  • Fairchild

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DM74AS21 Dual 4-Input AND Gate
April 1984
Revised March 2000
DM74AS21
Dual 4-Input AND Gate
General Description
This device contains two independent 4-input gates, each
of which performs the logic AND function.
Features
s
Switching specifications at 50 pF
s
Switching specifications guaranteed over full
temperature and V
CC
range
s
Advanced oxide-isolated, ion-implanted Schottky
TTL process
s
Functionally and pin for pin compatible with Schottky,
low power Schottky, and advanced low power Schottky
TTL counterpart
s
Improved AC performance over Schottky, low power
Schottky and advanced low power Schottky counter-
parts
Ordering Code:
Order Number
DM74AS21M
DM74AS21N
Package Number
M14A
N14A
Package Description
14-Lead Small Outline Integrated Circuit (SOIC), JEDEC MS-012, 0.150 Narrow
14-Lead Plastic Dual-In-Line Package (PDIP), JEDEC MS-001, 0.300 Wide
Devices also available in Tape and Reel. Specify by appending the suffix letter 鈥淴鈥?to the ordering code.
Connection Diagram
Function Table
Inputs
A
H
L
X
X
X
B
H
X
L
X
X
C
H
X
X
L
X
D
H
X
X
X
L
Output
Y
H
L
L
L
L
H
=
HIGH Logic Level
L
=
LOW Logic Level
X
=
Either LOW or HIGH Logic Level
漏 2000 Fairchild Semiconductor Corporation
DS006277
www.fairchildsemi.com

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