HD74HC83 datasheet(2/7 Pages) RENESAS

Part #	HD74HC83

Description	4-bit Binary Full Adder (with Fast Carry)

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Manufacturer	RENESAS [Renesas Technology Corp]

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2 / 7 page

HD74HC83

Rev.2.00, Oct 06, 2005 page 2 of 6

Function Table

Outputs

Inputs

When C0 = L / When C2 = L

When C0 = H / When C2 = H

A1 / A3

B1 / B3

A1 / A3

Σ1 / Σ3

Σ2 / Σ4

C2 / C4

Σ1 / Σ3

Σ2 / Σ4

C2 / C4

L

H

L

H

L

H

L

H

L

H

L

H

L

H

L

H

L

H

L

H

L

H

L

H

L

H

L

H

L

H

L

H

L

H

L

H

L

H

L

H

L

H

L

H

L

H

L

H

L

H

L

H

L

H

L

H

L

H

L

H

L

H

L

H

L

H

L

H

L

H

L

H

L

H

L

H

L

H

L

H

L

H

L

H

L

H

L

H

H :

High level

L :

Low level

X :

Irrelevant

Note : Input conditions at A1, B1, A2, B2 and C0 are used to determine outputs

Σ1 and Σ2 and the value of the internal

carry C2.

The value at C2, A3, B3, A4 and B4 are than used to determine outputs

Σ3, Σ4 and C4

Pin Arrangement

1

2

3

4

5

6

7

8

A4

Σ3

A3

B3

VCC

Σ2

B2

A2

B4

Σ4

C4

C0

GND

B1

A1

Σ1

16

15

14

13

12

11

10

9

(Top view)

A4

Σ3

Σ2

A3

Σ4

C4

C0

B1

A1

B3

B2

B4

A2

Σ1

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