Philips Semiconductors

Product specification

74F182

Look-ahead carry generator

1991 Apr 15

5

APPLICATION

SF00728

Cn+y

Cn+z

Cn+x

P1 G1 P2 G2

G0

P0

P3 G3

G

P

Cn

Cn+y

Cn+z

Cn+x

P1 G1 P2 G2

G0

P0

P3 G3

G

P

Cn

Cn

Cn+4

G

P

ALU*

Cn

Cn+4

ALU*

Cn

Cn+4

ALU*

Cn

G

P

ALU*

Cn

Cn+4

G

P

ALU*

Cn

G

P

ALU*

Cn

G

P

ALU*

Cn

G

P

ALU*

74F182

74F182

COUT

(C32)

F

A, B

C18

Figure 1. 32-Bit ALU with Ripple Carry Between 16-Bit Look-Ahead ALUs (*ALUs may be either 74F181 or 74F381)

ABSOLUTE MAXIMUM RATINGS

(Operation beyond the limit set forth in this table may impair the useful life of the device.

Unless otherwise noted these limits are over the operating free air temperature range.)

SYMBOL

PARAMETER

RATING

UNIT

Supply voltage

–0.5 to +7.0

V

Input voltage

–0.5 to +7.0

V

Input current

–30 to +5

mA

Voltage applied to output in High output state

V

Current applied to output in Low output state

40

mA

Operating free-air temperature range

0 to +70

°C

Storage temperature range

–65 to +150

°C

RECOMMENDED OPERATING CONDITIONS

SYMBOL

PARAMETER

LIMITS

UNIT

SYMBOL

PARAMETER

MIN

NOM

MAX

UNIT

Supply voltage

4.5

5.0

5.5

V

High-level input voltage

2.0

V

Low-level input voltage

0.8

V

Input clamp current

–18

mA

High-level output current

–1

mA

Low-level output current

20

mA

Operating free-air temperature range

0

70

°C