P for the four bits of the HCC/HCF40181B. Use of

the HCC/HCF40182B look-ahead carry generator

in conjunction with multiple HCC/HCF40181B’s per-

mits high-speed arithmetic operations on long

in systems where speed is not of primary import-

ance. Also included in the HCC/HCF40181B is a

comparator output A = B, which assumes a high

level whenever the two four-bit input words A and B

are equal and the device is in the subtract mode. In

addition, relative magnitude information may be

mode and externally decoding using the information

in table II. The HCC/HCF40181B is similar to indus-

try types MC 14581 and 74181.

FUNCTIONAL DIAGRAM

Active-low Data.

Active-high Data.

ABSOLUTE MAXIMUM RATINGS

Symbol

Parameter

Value

Unit

Supply Voltage : HC C Types

HCF Types

– 0.5 to + 20

– 0.5 to + 18

V

V

Input Voltage

V

DC Input Current (any one input)

± 10

mA

Total Power Dissipation (per package)

Dissipation per Output Transistor

200

100

mW

mW

Operating Temperature : HCC Types

HCF Types

– 55 to + 125

–40 to + 85

°C

°C

Storage Temperature

– 65 to + 150

°C

Stresses above those listed under ”Absolute Maximum Ratings” may cause permanent damage to the device. This is a stress

rating only and functional operation of the device at these or any other conditions above those indicated in the operational sections

of this specification is not implied. Exposure to absolute maximum rating conditions for external periods may affect device reliability.

HCC/HCF40181B

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