3 Pin Configuration and Functions

Figure 3-1. CD54AC283, CD54ACT283 J Package; CD74AC283, CD74ACT283 D or N Package; 16-Pin

CDIP, PDIP, or SOIC (Top View)

Table 3-1. Pin Functions

PIN

TYPE(1)

DESCRIPTION

NAME

NO.

S1

1

O

Sum output 1

B1

2

I

1 bit input for binary number B

A1

3

I

1 bit input for binary number A

S0

4

O

Sum output 0

A0

5

I

0 bit input for binary number A

B0

6

I

0 bit input for binary number B

CIN

7

I

Carry input

GND

8

G

Ground

COUT

9

O

Carry output

S3

10

O

Sum output 3

B3

11

I

3 bit input for binary number B

A3

12

I

3 bit input for binary number A

S2

13

O

Sum output 2

A2

14

I

2 bit input for binary number A

B2

15

I

2 bit input for binary number B

VCC

14

P

VCC

(1)

I = Input, O = Output, I/O = Input or Output, G = Ground, P = Power.

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CD54AC283, CD74AC283, CD54ACT283, CD74ACT283

SCHS251E – NOVEMBER 1998 – REVISED JANUARY 2025

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