Datasheet

ManualsBrandsTEXAS INSTRUMENTS ManualsLogic ICsLogic IC - Flip-Flop Preset/reset Differential DIP 16

1

2

3

4

5

6

7

8

9

CD54AC109, CD74AC109

DUAL J-K

POSITIVE-EDGE-TRIGGERED FLIP-FLOPS

WITH CLEAR AND PRESET

SCHS326 – JANUARY 2003

2

POST OFFICE BOX 655303 • DALLAS, TEXAS 75265

FUNCTION TABLE

(each flip-flop)

INPUTS

OUTPUTS

PRE CLR CLK J K Q Q

L H X X X H L

H LXXXLH

L LXXXH

†

H

†

H H ↑ LLLH

H H ↑ H L Toggle

H H ↑ LHQ0Q0

H H ↑ HHHL

H H L X X Q0 Q0

†

Unpredictable and unstable condition if both PRE

and CLR

go low simultaneously

logic diagram, each flip-flop (positive logic)

PRE

CLK

J

CLR

Q

Q

C

C

C

C

K

TG

TG

TG

TG

C

C

C

C

C

C