© 1999 Fairchild Semiconductor Corporation DS009918 www.fairchildsemi.com
November 1988
Revised November 1999
7
4
AC
2
0
Dual
4-
In
put
NA
ND
Gate
74AC20
Dual 4-Input NAND Gate
General Description
The AC20 contains four 4-input NAND gates.
Features
a73 I
CC
reduced by 50%
a73 Outputs source/sink 24 mA

Ordering Code:
Device also available in Tape and Reel. Specify by appending suffix letter “X” to the ordering code.
Logic Symbol
IEEE/IEC
Connection Diagram
Pin Descriptions
FACT is a trademark of Fairchild Semiconductor Corporation.
Order Number Package Number Package Description
74AC20SC M14A 14-Lead Small Outline Integrated Circuit (SOIC), JEDEC MS-120, 0.150” Narrow Body
74AC20SJ M14D 14-Lead Small Outline Package (SOP), EIAJ TYPE II, 5.3mm Wide
74AC20MTC MTC14 14-Lead Thin Shrink Small Outline Package (TSSOP), JEDEC MO-153, 4.4mm Wide
74AC20PC N14A 14-Lead Plastic Dual-In-Line Package (PDIP), JEDEC MS-001, 0.300” Wide
Pin Names Description
A
n
, B
n
, C
n
, D
n
Inputs
O
n
Outputs