SN54HC374, SN74HC374

OCTAL EDGETRIGGERED DTYPE FLIPFLOPS

WITH 3STATE OUTPUTS

SCLS141D – DECEMBER 1982 – REVISED DECEMBER 2002

1

POST OFFICE BOX 655303

Drive Up To 15 LSTTL Loads

32 1 20 19

910 11 1213

4

5

6

7

8

18

17

16

15

14

8D

7D

7Q

6Q

6D

2D

2Q

3Q

3D

4D

SN54HC374 ...FK PACKAGE

(TOP VIEW)

SN54HC374 ...J OR W PACKAGE

SN74HC374 . . . DB, DW, N, NS, OR PW PACKAGE

(TOP VIEW)

1

2

3

4

5

6

7

8

9

10

20

19

18

17

16

15

14

13

12

11

OE

1Q

1D

2D

2Q

3Q

3D

4D

4Q

GND

8Q

8D

7D

7Q

6Q

6D

5D

5Q

CLK

description/ordering information

These 8-bit flip-flops feature 3-state outputs designed specifically for driving highly capacitive or relatively

low-impedance loads. They are particularly suitable for implementing buffer registers, I/O ports, bidirectional

bus drivers, and working registers.

The eight flip-flops of the ’HC374 devices are edge-triggered D-type flip-flops. On the positive transition of the

clock (CLK) input, the Q outputs are set to the logic levels that were set up at the data (D) inputs.

An output-enable (OE) input places the eight outputs in either a normal logic state (high or low logic levels) or

the high-impedance state. In the high-impedance state, the outputs neither load nor drive the bus lines

significantly. The high-impedance state and increased drive provide the capability to drive bus lines without

interface or pullup components.

ORDERING INFORMATION

TA

PACKAGE†

ORDERABLE

PART NUMBER

TOP-SIDE

MARKING

PDIP – N

Tube

SN74HC374N

SN74HC374N

SOIC

DW

Tube

SN74HC374DW

HC374

40

°Cto85°C

SOIC – DW

Tape and reel

SN74HC374DWR

HC374

–40

°C to 85°C

SOP – NS

Tape and reel

SN74HC374NSR

HC374

SSOP – DB

Tape and reel

SN74HC374DBR

HC374

TSSOP – PW

Tape and reel

SN74HC374PWR

HC374

CDIP – J

Tube

SNJ54HC374J

SNJ54HC374J

–55

°C to 125°C

CFP – W

Tube

SNJ54HC374W

SNJ54HC374W

55 C to 125 C

LCCC – FK

Tube

SNJ54HC374FK

SNJ54HC374FK

† Package drawings, standard packing quantities, thermal data, symbolization, and PCB design guidelines are

available at www.ti.com/sc/package.

Copyright

 2002, Texas Instruments Incorporated

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.

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 MILPRF38535, all parameters are tested

unless otherwise noted. On all other products, production

processing does not necessarily include testing of all parameters.