DM74LS33 Datasheet, PDF (1/4 Pages) Fairchild Semiconductor – Quad 2-Input NOR Buffer with Open-Collector Outputs

March 1989
Revised March 2000
DM74LS33
Quad 2-Input NOR Buffer with Open-Collector Outputs
General Description
This device contains four independent gates each of which
perform the logic NOR function. Outputs are open-collec-
tor.
Ordering Code:
Order Number Package Number
Package Description
DM74LS33M
M14A
14-Lead Small Outline Integrated Circuit (SOIC), JEDEC MS-120, 0.150 Narrow
DM74LS33N
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
Inputs
A
B
L
L
L
H
H
L
H
H
H = HIGH Logic Level
L = LOW Logic Level
Output
Y
H
L
L
L
© 2000 Fairchild Semiconductor Corporation DS010170
www.fairchildsemi.com