SN75276

FAIL-SAFE DIFFERENTIAL BUS TRANSCEIVER

SLLS212B – SEPTEMBER 1995 – REVISED APRIL 1998

2

POST OFFICE BOX 655303

Function Tables

EACH DRIVER

INPUT

ENABLE

OUTPUTS

D

DE

A

B

H

H

H

L

L

H

L

H

X

L

Z

Z

EACH RECEIVER

DIFFERENTIAL

ENABLE

OUTPUT

A – B

RE

R

VID ≥ 0 V

L

H

– 0.3 V < VID < 0 V

L

?

VID ≤ – 0.3

L

L

X

H

Z

Open

L

H

H = high level, L = low level, ? = indeterminate,

X = irrelevant, Z = high impedance (off)

RE

DE

1

1

2

B

A

7

6

EN2

EN1

R

D

1

4

2

3

† This symbol is in accordance with ANSI/IEEE Std 91-1984

and IEC Publication 617-12.

logic diagram (positive logic)

DE

RE

R

6

7

3

1

2

B

A

Bus

D

4