3 Pin Configuration and Functions

Figure 3-1. CD54AC245, CD54ACT245 (CERDIP), CD74AC245, CD74ACT245 (PDIP, SOIC, SSOP) Top

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Pin Functions

PIN

TYPE1

DESCRIPTION

NO.

NAME

1

DIR

I/O

Direction Pin

2

A0

I/O

A1 Input/Output

3

A1

I/O

A2 Input/Output

4

A2

I/O

A3 Input/Output

5

A3

I/O

A4 Input/Output

6

A4

I/O

A5 Input/Output

7

A5

I/O

A6 Input/Output

8

A6

I/O

A7 Input/Output

9

A7

I/O

A8 Input/Output

10

GND

—

Ground Pin

11

B7

I/O

B7 Input/Output

12

B6

I/O

B6 Input/Output

13

B5

I/O

B5 Input/Output

14

B4

I/O

B4 Input/Output

15

B3

I/O

B3 Input/Output

16

B2

I/O

B2 Input/Output

17

B1

I/O

B1 Input/Output

18

B0

I/O

B0 Input/Output

19

OE

I/O

Output Enable

20

VCC

—

Power Pin

(1)

Signal Types: I = Input, O = Output, I/O = Input or Output

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CD54AC245, CD74AC245, CD54ACT245, CD74ACT245

SCHS245D – NOVEMBER 1998 – REVISED APRIL 2024

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Product Folder Links: CD54AC245 CD74AC245 CD54ACT245 CD74ACT245