R

RE

DE

D

V

CC

B

A

GND

SN65HVD1785,1786,1787

DorP Package

(TopView)

1

2

3

4

8

7

6

5

P0066-02

1

2

3

4

5

6

7

14

13

12

11

10

9

8

NC

GND

GND

Z

Y

NC

R

RE

DE

D

V

CC

V

CC

A

B

SN65HVD1791,1792,1793

DPackage

(TopView)

P0005-02

NC-Nointernalconnection

LogicDiagram(PositiveLogic)

S0299-01

1

2

3

4

6

7

A

B

R

RE

DE

D

Bus

LogicDiagram(PositiveLogic)

2

3

4

5

12

10

9

11

A

Z

Y

B

R

RE

DE

D

S0300-01

DEVICE INFORMATION

SN65HVD1785, SN65HVD1786

SN65HVD1787, SN65HVD1791

SN65HVD1792, SN65HVD1793

These devices have limited built-in ESD protection. The leads should be shorted together or the device placed in conductive foam

during storage or handling to prevent electrostatic damage to the MOS gates.

DRIVER FUNCTION TABLE

Input

Enable

Outputs

D

DE

A

B

H

H

H

L

Actively drive bus High

L

H

L

H

Actively drive bus Low

X

L

Z

Z

Driver disabled

X

OPEN

Z

Z

Driver disabled by default

OPEN

H

H

L

Actively drive bus High by default

RECEIVER FUNCTION TABLE

Differential Input

Enable

Output

RE

R

L

H

Receive valid bus High

L

?

Indeterminate bus state

L

L

Receive valid bus Low

X

H

Z

Receiver disabled

X

OPEN

Z

Receiver disabled by default

Open-circuit bus

L

H

Fail-safe high output

Short-circuit bus

L

H

Fail-safe high output

Idle (terminated) bus

L

H

Fail-safe high output

2

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Copyright © 2008, Texas Instruments Incorporated

Product Folder Link(s): SN65HVD1785, SN65HVD1786 SN65HVD1787, SN65HVD1791 SN65HVD1792, SN65HVD1793