SN74F161A

SYNCHRONOUS 4-BIT BINARY COUNTER

SDFS056A – D2932, MARCH 1987 – REVISED OCTOBER 1993

2–2

POST OFFICE BOX 655303

state diagram

1, 5D

3

A

4

B

5

C

6

D

14

13

12

11

CTRDIV16

LOAD

CT = 0

1

M2

M1

9

C5/2,3,4+

G3

10

ENT

RCO

15

3CT = 15

QA

QB

QC

QD

0

15

14

13

12

1234

5

6

7

8

9

10

11

† This symbol is in accordance with ANSI/IEEE Std 91-1984 and

IEC Publication 617-12.

G4

7

ENP

2

CLK

CLR

1

2

4

8