DM74AS21 Dual 4-Input AND Gate

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DM74AS21 Dual 4-Input AND Gate

May 2007

DM74AS21 Dual 4-Input AND Gate
Features
Switching specifications at 50pF Switching specifications guaranteed over full

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General Description
This device contains two independent 4-input gates, each of which performs the logic AND function.

temperature and VCC range
Advanced oxide-isolated, ion-implanted Schottky

TTL process
Functionally and pin for pin compatible with Schottky,

low power Schottky, and advanced low power Schottky TTL counterpart Improved AC performance over Schottky, low power Schottky and advanced low power Schottky counterparts

Ordering Information
Order Number
DM74AS21M

Package Number
M14A

Package Description
14-Lead Small Outline Integrated Circuit (SOIC), JEDEC MS-012, 0.150" Narrow

Devices also available in Tape and Reel. Specify by appending the suffix letter "X" to the ordering number.

Connection Diagram

Function Table
Inputs A
H L X X X

Output C
H X X L X

B
H X L X X

D
H X X X L

Y
H L L L L

H HIGH Logic Level L LOW Logic Level X Either LOW or HIGH Logic Level

1984 Fairchild Semiconductor Corporation DM74AS21 Rev. 1.2

www.fairchildsemi.com

DM74AS21 Datasheet Fairchild Download PDF

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DM74AS21 DATASHEET