74HC/HCT181 Philips Semiconductors (Acquired by NXP), 74HC/HCT181 Datasheet - Page 4

• Manufacturer Part Number: 74HC/HCT181
• Description: 4-bit Arithmetic Logic Unit
• Manufacturer: Philips Semiconductors (Acquired by NXP)

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Philips Semiconductors
PIN DESCRIPTION
1998 Jun 10
PIN NO.
1, 22, 20, 18
2, 23, 21, 19
6, 5, 4, 3
7
8
9, 10, 11, 13
12
14
15
16
17
24
4-bit arithmetic logic unit
23
21
19
22
20
18
Fig.4 Functional diagram.
2
1
7
6
5
4
3
8
A 0
A 1
A 2
A 3
B 0
B 1
B 2
B 3
C n
S 0
S 1
S 2
S 3
M
C n 4
A=B
SYMBOL
B
A
S
C
M
F
GND
A=B
P
C
G
V
F 0
F 1
F 2
F 3
0
G
0
0
0
CC
P
n
n+4
to F
to B
to A
to S
9
10
11
13
16
14
17
15
MBK219
3
3
3
3
NAME AND FUNCTION
operand inputs (active LOW)
operand inputs (active LOW)
select inputs
carry input
mode control input
function outputs (active LOW)
ground (0 V)
comparator output
carry propagate output (active LOW)
carry output
carry generate output (active LOW)
positive supply voltage
Fig.5 Active HIGH operands - active LOW operands.
4
74HC/HCT181
Product specification