Philips hef4008b DATASHEETS

INTEGRATED CIRCUITS

DATA SH EET

For a complete data sheet, please also download:

•The IC04 LOCMOS HE4000B Logic Family Specifications HEF, HEC

•The IC04 LOCMOS HE4000B Logic Package Outlines/Information HEF, HEC

HEF4008B MSI

4-bit binary full adder

Product speciﬁcation File under Integrated Circuits, IC04

January 1995

Philips Semiconductors Product speciﬁcation

4-bit binary full adder

DESCRIPTION

The HEF4008B is a 4-bit binary full adder with two 4-bit data inputs (A0to A3, B0to B3), a carry input (CIN), four sum outputs (S0to S3), and a carry

output (C

). The IC uses full

OUT

look-ahead across 4-bits to generate C

. This minimizes the necessity

OUT

for extensive look-ahead and carry-cascading circuits.

HEF4008B

MSI

Fig.2 Pinning diagram.

Fig.1 Functional diagram.

HEF4008BP(N): 16-lead DIL; plastic

(SOT38-1)

HEF4008BD(F): 16-lead DIL; ceramic (cerdip)

(SOT74)

HEF4008BT(D): 16-lead SO; plastic

(SOT109-1)

( ): Package Designator North America

A B S C C

to A

to B

to S

0 IN OUT

3 3 3

data inputs data inputs sum outputs carry input carry output

ABC

OUT

LLL L L LLH L H LHL L H

LHH H L HLL L H HLH H L HHL H L HHH H H

See Family Specifications

January 1995 2

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