SN54HC27, SN74HC27

TRIPLE 3-INPUT POSITIVE-NOR GATES

SCLS088D – DECEMBER 1982 – REVISED AUGUST 2003

1

POST OFFICE BOX 655303

1

2

3

4

5

6

7

14

13

12

11

10

9

8

1A

1B

2A

2B

2C

2Y

GND

1C

1Y

3C

3B

3A

3Y

SN54HC27 ...J OR W PACKAGE

SN74HC27 . . . D, DB, N, OR NS PACKAGE

(TOP VIEW)

32 1 20 19

910 11 1213

4

5

6

7

8

18

17

16

15

14

1Y

NC

3C

NC

3B

2A

NC

2B

NC

2C

SN54HC27 . . . FK PACKAGE

(TOP VIEW)

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

TA

PACKAGE†

ORDERABLE

PART NUMBER

TOP-SIDE

MARKING

–40 C to 85 C

PDIP – N

Tube of 25

SN74HC27N

SN74HC27N

–40 C to 85 C

SOIC – D

Tube of 50

SN74HC27D

HC27

–40

°C to 85°C

SOIC – D

Reel of 2500

SN74HC27DR

HC27

–40

°C to 85°C

Reel of 250

SN74HC27DT

SOP – NS

Reel of 2000

SN74HC27NSR

HC27

SSOP – DB

Reel of 2000

SN74HC27DBR

HC27

–55 C to 125 C

CDIP – J

Tube of 25

SNJ54HC27J

SNJ54HC27J

–55

°C to 125°C

CFP – W

Tube of 150

SNJ54HC27W

SNJ54HC27W

LCCC – FK

Tube 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

OUTPUT

A

B

C

OUTPUT

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.