SN54HCT374, SN74HCT374

OCTAL EDGETRIGGERED DTYPE FLIPFLOPS

WITH 3STATE OUTPUTS

SCLS005D − MARCH 1984 − REVISED AUGUST 2003

1

POST OFFICE BOX 655303

Drive Up To 15 LSTTL Loads

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 ’HCT374 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 of 20

SN74HCT374N

SN74HCT374N

SOIC − DW

Tube of 25

SN74HCT374DW

HCT374

SOIC − DW

Reel of 2000

SN74HCT374DWR

HCT374

−40

°C to 85°C

SOP − NS

Reel of 2000

SN74HCT374NSR

HCT374

−40

°C to 85°C

SSOP − DB

Reel of 2000

SN74HCT374DBR

HT374

Tube of 70

SN74HCT374PW

TSSOP − PW

Reel of 2000

SN74HCT374PWR

HT374

TSSOP − PW

Reel of 250

SN74HCT374PWT

HT374

CDIP − J

Tube of 20

SNJ54HCT374J

SNJ54HCT374J

−55

°C to 125°C

CFP − W

Tube of 85

SNJ54HCT374W

SNJ54HCT374W

−55 C to 125 C

LCCC − FK

Tube of 55

SNJ54HCT374FK

SNJ54HCT374FK

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

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

32 1 20 19

910 11 12 13

4

5

6

7

8

18

17

16

15

14

8D

7D

7Q

6Q

6D

2D

2Q

3Q

3D

4D

SN54HCT374 . . . FK PACKAGE

(TOP VIEW)

SN54HCT374 ...J OR W PACKAGE

SN74HCT374 . . . 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

Copyright

 2003, 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.