TECHNICAL DATA

1

Octal 3-State Inverting

Bus Transceiver

The 74LV640 is a low-voltage Si-gate CMOS device and is pin and

function compatible with 74HC/HCT640.

The 74LV640 provides six inverting buffers with Schmitt-trigger

action.

• Wide Operating Voltage: 1.2 to 3.6 V

• Optimized for Low Voltage applications: 1.0 to 3.6 V

• Accepts TTL input levels between V

• Low input current

IN74LV640

ORDERING INFORMATION

IN74LV640N Plastic

IN74LV640D SOIC

IZ74LV640

Chip

° to 125° C for all packages

PIN ASSIGNMENT

640

A

8

02

A

1

03

A

2

04

A

3

05

A

4

06

A

5

07

A

6

08

A

7

09

20

19

18

17

16

15

14

13

12

11

B

8

B

1

B

2

B

3

B

4

B

5

B

6

B

7

OE

V

CC

LOGIC DIAGRAM

18

B

8

03

17

B

1

A

1

04

16

B

2

A

2

05

15

B

3

A

3

06

14

B

4

A

4

07

13

B

5

A

5

08

12

B

6

A

6

09

11

B

7

A

7

01

DIR

02

A

8

19

OE

PIN 10 = GND

FUNCTION TABLE

Inputs

Inputs/Outputs

OE

DIR

À

Â

L

L

A=B

input

L

H

input

B=A

H

X

Z

Z