MC74F181 Motorola, MC74F181 Datasheet - Page 5

• Manufacturer Part Number: MC74F181
• Description: 4-BIT ARITHMETIC LOGIC UNIT FAST SCHOTTKY TTL
• Manufacturer: Motorola

*Each bit is shifted to the next more significant position.
**Arithmetic operations expressed in 2s complement notation.
S 3
H
H
H
H
H
H
H
H
L
L
L
L
L
L
L
L
Mode Select
S 2
H
H
H
H
H
H
H
H
L
L
L
L
L
L
L
L
Inputs
S 1
H
H
H
H
H
H
H
H
L
L
L
L
L
L
L
L
S 0
H
H
H
H
H
H
H
H
L
L
L
L
L
L
L
L
Logic
(M = H)
A
AB
A + B
Logic 1
A + B
B
A
A + B
AB
A
B
A + B
Logic 0
AB
AB
A
Active-LOW Operands
B
B
FAST AND LS TTL DATA
& F n Outputs
MC54/74F181
Arithmetic**
(M = L) (C n = L)
A minus 1
AB minus 1
AB minus 1
minus 1
A plus (A + B)
AB plus (A + B)
A minus B minus 1
A + B
A plus (A + B)
A plus B
AB plus (A + B)
A + B
A plus A*
AB plus A
AB minus A
A
FUNCTION TABLE
4-96
Logic
(M = H)
A
A + B
AB
Logic 0
AB
B
A
AB
A + B
A
B
AB
Logic 1
A + B
A + B
A
H = HIGH Voltage Level
L = LOW Voltage Level
Active-HIGH Operands
B
B
& F n Outputs
Arithmetic**
(M = L) (C n = H)
A
A + B
A + B
minus 1
A plus AB
(A + B) plus AB
A minus B minus 1
AB minus 1
A plus AB
A plus B
(A + B) plus AB
AB minus 1
A plus A*
(A + B) plus A
(A + B) plus A
A minus 1