DM74LS27 Datasheet, PDF (1/4 Pages) Fairchild Semiconductor – Triple 3-Input NOR Gate

May 1986
Revised March 2000
DM74LS27
Triple 3-Input NOR Gate
General Description
This device contains three independent gates each of
which performs the logic NOR function.
Ordering Code:
Order Number Package Number
Package Description
DM74LS27M
M14A
14-Lead Small Outline Integrated Circuit (SOIC), JEDEC MS-120, 0.150 Narrow
DM74LS27N
N14A
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 “X” to the ordering code.
Connection Diagram
Function Table
Y= A+B+C
Inputs
A
B
C
L
L
L
X
X
H
X
H
X
H
X
X
H = HIGH Logic Level
L = LOW Logic Level
X = Either LOW or HIGH Logic Level
Output
Y
H
L
L
L
© 2000 Fairchild Semiconductor Corporation DS006359
www.fairchildsemi.com