Motorola MC74F181N, MC54F181N Datasheet

4-92

FAST AND LS TTL DATA

4-BIT ARITHMETIC LOGIC UNIT

The MC54/74F181 is a 4-bit Arithmetic Logic Unit (ALU) which can perform
all the possible 16 logic operations on two variables and a variety of arithmetic
operations. It is 40% faster than the Schottky ALU and only consumes 30%
as much power.

• Provides 16 Arithmetic Operations, ie, Add, Subtract, Compare,

Double, Plus Twelve Other Arithmetic Operations

• Provides all 16 Logic Operations of Two Variables, ie, Exclusive-OR,

Compare, AND, NAND, OR, NOR, Plus Ten Other Logic Operations

• Full Lookahead for High-Speed Arithmetic Operation on Long Words

CONNECTION DIAGRAM

22 21 20 19 18 17

1 2 3 4 5 6

7

24 23

8

V

CC

B

0

A

1B1A2B2

B

3

A

3

G

A

0S3S2S1S0Cn

M

9 10

11

12

F

0F1F2

GND

16 15 14 13

C

n+4

A = BP

F

3

GUARANTEED OPERATING RANGES

Symbol Parameter Min Typ Max Unit

V

CC

Supply Voltage 54, 74 4.5 5.0 5.5 V

54 –55 25 125

TAOperating Ambient Temperature Range

74 0 25 70

°C

I

OH

Output Current — High 54, 74 –1.0 mA

V

OH

Output Voltage — High

A = B output

54, 74 5.5 V

I

OL

Output Current — Low 54, 74 20 mA

MC54/74F181

4-BIT ARITHMETIC LOGIC UNIT

FAST SCHOTTKY TTL

N SUFFIX

PLASTIC

CASE 724-03

24

1

ORDERING INFORMATION

MC54/74FXXXN Plastic

4-93

FAST AND LS TTL DATA

MC54/74F181

LOGIC SYMBOLS

VCC = PIN 24
GND = PIN 12

ACTIVE-HIGH OPERANDS

2 1 23 22 21 20 19 18

7
8
6
5
4
3

16
14
17
15

9 10 11 13

A0B0A1B1A2B2A3B

3

C

n

M
S

0

S

1

S

2

S

3

F0F1F2F

3

Cn +

4

A = B

G

P

2 1 23 22 21 20 19 18

7
8
6
5
4
3

16
14
17
15

9 10 11 13

A0B0A1B1A2B2A3B

3

C

n

M
S

0

S

1

S

2

S

3

F0F1F2F

3

Cn +

4

A = B

G

P

ACTIVE-LOW OPERANDS

LOGIC DIAGRAM

CnM A

0

B

0

A

1

B1A

2

B2A

3

B

3

S

0

S

1

S

2

S

3

F

0

F

1

A = B F

2

F

3

P

Cn +

4

G