SN54HC27, SN74HC27
TRIPLE 3-INPUT POSITIVE-NOR GATES
SCLS088D – DECEMBER 1982 – REVISED AUGUST 2003
1
POST OFFICE BOX 655303 • DALLAS, TEXAS 75265
Wide Operating Voltage Range of 2 V to 6 V
Outputs Can Drive Up To 10 LSTTL Loads
Low Power Consumption, 20-µA Max I
CC
Typical t
pd
= 9 ns
±4-mA Output Drive at 5 V
Low Input Current of 1 µA Max
1
2
3
4
5
6
7
14
13
12
11
10
9
8
1A
1B
2A
2B
2C
2Y
GND
V
CC
1C
1Y
3C
3B
3A
3Y
SN54HC27 ...J OR W PACKAGE
SN74HC27 . . . D, DB, N, OR NS PACKAGE
(TOP VIEW)
3212019
910111213
4
5
6
7
8
18
17
16
15
14
1Y
NC
3C
NC
3B
2A
NC
2B
NC
2C
1B
1A
NC
3Y
3A
V
1C
2Y
GND
NC
SN54HC27 . . . FK PACKAGE
(TOP VIEW)
CC
NC – No internal connection
description/ordering information
The ’HC27 devices contain three independent 3-input NOR gates. They perform the Boolean function
Y = A + B + C
or Y = A • B • C in positive logic.
ORDERING INFORMATION
T
A
PACKAGE
†
ORDERABLE
PART NUMBER
TOP-SIDE
MARKING
PDIP – N T ube of 25 SN74HC27N SN74HC27N
T ube of 50 SN74HC27D
Reel of 2500 SN74HC27DR
Reel of 250 SN74HC27DT
SOP – NS Reel of 2000 SN74HC27NSR HC27
SSOP – DB Reel of 2000 SN74HC27DBR HC27
CDIP – J T ube of 25 SNJ54HC27J SNJ54HC27J
°
°
CFP – W T ube of 150 SNJ54HC27W SNJ54HC27W
LCCC – FK T ube of 55 SNJ54HC27FK SNJ54HC27FK
†
Package drawings, standard packing quantities, thermal data, symbolization, and PCB design guidelines are
available at www.ti.com/sc/package.
FUNCTION TABLE
(each gate)
INPUTS
A B C
Y
H X X L
X HX L
X XH L
L L L H
Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of
Texas Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet.
Copyright 2003, Texas Instruments Incorporated
PRODUCTION DATA information is current as of publication date.
Products conform to specifications per the terms of Texas Instruments
standard warranty. Production processing does not necessarily include
testing of all parameters.
On products compliant to MIL-PRF-38535, all parameters are tested
unless otherwise noted. On all other products, production
processing does not necessarily include testing of all parameters.