SN54HC109, SN74HC109

DUAL JK POSITIVEEDGETRIGGERED

FLIPFLOPS WITH CLEAR AND PRESET

SCLS470A − MARCH 2003 − REVISED OCTOBER 2003

1

POST OFFICE BOX 655303

10 LSTTL Loads

SN54HC109 ...J OR W PACKAGE

SN74HC109 . . . D, N, OR NS PACKAGE

(TOP VIEW)

1

2

3

4

5

6

7

8

16

15

14

13

12

11

10

9

1CLR

1J

1K

1CLK

1PRE

1Q

1Q

GND

2CLR

2J

2K

2CLK

2PRE

2Q

2Q

SN54HC109 . . . FK PACKAGE

(TOP VIEW)

NC − No internal connection

32 1 20 19

910 11 12 13

4

5

6

7

8

18

17

16

15

14

2J

2K

NC

2CLK

2PRE

1K

1CLK

NC

1PRE

1Q

description/ordering information

These devices contain two independent J-K positive-edge-triggered flip-flops. A low level at the preset (PRE)

or clear (CLR) inputs sets or resets the outputs, regardless of the levels of the other inputs. When PRE and CLR

are inactive (high), data at the J and K inputs meeting the setup-time requirements are transferred to the outputs

on the positive-going edge of the clock (CLK) pulse. Clock triggering occurs at a voltage level and is not related

directly to the rise time of the clock pulse. Following the hold-time interval, data at the J and K inputs can be

changed without affecting the levels at the outputs. These versatile flip-flops can perform as toggle flip-flops by

grounding K and tying J high. They also can perform as D-type flip-flops if J and K are tied together.

ORDERING INFORMATION

TA

PACKAGE†

ORDERABLE

PART NUMBER

TOP-SIDE

MARKING

PDIP − N

Tube of 25

SN74HC109N

SN74HC109N

Tube of 40

SN74HC109D

−40

°C to 85°C

SOIC − D

Reel of 2500

SN74HC109DR

HC109

−40 C to 85 C

SOIC − D

Reel of 250

SN74HC109DT

HC109

SOP − NS

Reel of 2000

SN74HC109NSR

HC109

CDIP − J

Tube of 25

SNJ54HC109J

SNJ54HC109J

−55

°C to 125°C

CFP − W

Tube of 150

SNJ54HC109W

SNJ54HC109W

−55 C to 125 C

LCCC − FK

Tube of 55

SNJ54HC109FK

SNJ54HC109FK

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

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

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.