Pin Assignments
669
674
16-BIT SHIFT REGISTERS
SYNCHRONOUS 4-BIT UP/DOWN COUNTERS
OUTPUTS
PARALLEL INPUTS
P11 P10 P9
RIPPLE
CARRY
OUTPUT
ENABLE
T
V
CC
Q
A
Q
B
Q
C
Q
D
LOAD
V
CC
P15
P14
P13
P12
P8
P7
P6
P5
16 15 14 13 12 11 10
9
24 23 22 21 20 19 18 17 16 15 14 13
RIPPLE
CARRY
OUTPUT
UP/DOWN
Q
Q
Q
Q
D
ENABLE
T
P15
CS
P14
P13
P12
P11
P10
P0
P9
P1
P8
P2
P7
P3
P6
P4
A
B
C
LOAD
ENABLE
P
P5
DATA
MODE I/O
CK
CK
A
B
C
D
R/W
1
U/D
2
CK
3
A
4
B
5
C
6
D
7
8
1
2
3
4
5
6
7
P0
8
P1
9
P2
10 11 12
ENABLE GND
CHIP CLOCK READ/ NC MODE DATA
P3
P4
GND
SELECT
CONTROL I/O
P
WRITE
DATA INPUTS
PARALLEL INPUTS
NC-No internal connection
See page 502
See page 508
670
679
12-BIT ADDRESS COMPARATOR
4-BY-4 REGISTER FILES WITH 3-STATE OUTPUTS
WRITE SELECT
DATA
ENABLE
WRITE READ
OUTPUT
V
CC
G
Y
P3
P2
P1
P0
A12
A11
A10
V
CC
D1
W
A
W
B
Q1
Q2
20 19 18 17 16 15 14 13 12 11
16 15 14 13 12 11 10
9
G
Y
P3
P2
P1
P0
A12
A11
A10
D1
W
A
W
B
GW
GR
Q1
D2
Q2
D3
D4
R
R
A
Q4
Q3
B
A1
A2
A3
A4
A5
A6
A7
A8
A9
1
A1
2
A2
3
A3
4
A4
5
A5
6
A6
7
A7
8
A8
9
A9
10
GND
1
D2
2
D3
3
D4
4
B
5
A
6
Q4
7
Q3
8
GND
R
R
DATA
READ SELECT
OUTPUTS
See page 504
See page 510
673
682
684
16-BIT SHIFT REGISTERS
8-BIT MAGNITUDE COMPARATORS
STORAGE REGISTER OUTPUT
Y12 Y11 Y10 Y9 Y8
V
CC
P=Q
Q7
P7
Q6
P6
Q5
P5
Q4
P4
V
CC
Y15
Y14
Y13
Y7
Y6
Y5
20 19 18 17 16 15 14 13 12 11
24 23 22 21 20 19 18 17 16 15 14 13
P=Q
Q7
P7
Q6
P6
Q5
P5
Q4
Y15
CS
Y14
Y13
Y12
Y11
Y10
Y0
Y9
Y1
Y8
Y2
Y7
Y3
Y6
Y4
P>Q
P4
Y5
STORE
CK
SH
CK
STORE
CLR
DATA
I/O
R/W
P0
Q0
P1
Q1
P2
Q2
P3
Q3
1
P>Q
2
P0
3
Q0
4
P1
5
Q1
6
P2
7
Q2
8
P3
9
Q3
10
GND
1
2
3
4
5
6
7
Y0
8
Y1
9
Y2
10 11 12
CHIP SHIFT READ/ STORE STORE DATA
Y3
Y4
GND
SELECT CLOCK WRITE CLR CK I/O
STRAGE REGISTER
OUTPUTS
See page 506
See page 512, 514
185
TI [ TEXAS INSTRUMENTS ]
