Datasheet

Function Table:
Inputs Outputs
Mode
Control
Clocks
Serial
Parallel
Q
A
Q
B
Q
C
Q
D
2 (L) 1 (R) A B C D
H H X X X X X X Q
A0
Q
B0
Q
C0
Q
D0
H  XXa bcdabcd
H  XX
Q
B
{ Q
C
{ Q
D
{
dQ
Bn
Q
Cn
Q
Dn
d
L L HXX XXXQ
A0
Q
B0
Q
C0
Q
D0
L X  H X XXXHQ
An
Q
Bn
Q
Cn
L X  L X XXXLQ
An
Q
Bn
Q
Cn
 L LXX XXXQ
A0
Q
B0
Q
C0
Q
D0
 L LXX XXXQ
A0
Q
B0
Q
C0
Q
D0
 L HXX XXXQ
A0
Q
B0
Q
C0
Q
D0
 H LXX XXXQ
A0
Q
B0
Q
C0
Q
D0
 H H X X X X X Q
A0
Q
B0
Q
C0
Q
D0
{ = Shifting left requires external connection of Q
B
to A, Q
C
to B, and Q
D
to C. Serial data
is entered at input D.
H = HIGH Level (Steady State)
L = LOW Level (Steady State)
X = Irrelevant (Any input, including transitions)
a, b, c, d = The level of steady−state input at inputs A, B, C, or D, respectively.
Q
A0
, Q
B0
, Q
C0
, Q
D0
= The level of Q
A
, Q
B
, Q
C
, or Q
D
, respectively, before the indicated
steady−state input conditions were established.
Q
An
, Q
Bn
, Q
Cn
, Q
Dn
= The level of Q
A
, Q
B
, Q
C
, or Q
D
, respectively, before the most−recent
 transition of the clock.
Q
D
Q
B
Q
A
V
CC
CLK 2
CLK 1
Q
C
Pin Connection Diagram
GND
1
2
3
4
SER
A
B
C
5D
6MODE
7
14
13
12
11
10
9
8