SN65176B, SN75176B

DIFFERENTIAL BUS TRANSCEIVERS

SLLS101D – JULY 1985 – REVISED APRIL 2003

2

POST OFFICE BOX 655303

description/ordering information (continued)

The driver is designed for up to 60 mA of sink or source current. The driver features positive and negative current

limiting and thermal shutdown for protection from line-fault conditions. Thermal shutdown is designed to occur

at a junction temperature of approximately 150

°C. The receiver features a minimum input impedance of 12 kΩ,

an input sensitivity of

±200 mV, and a typical input hysteresis of 50 mV.

The SN65176B and SN75176B can be used in transmission-line applications employing the SN75172 and

SN75174 quadruple differential line drivers and SN75173 and SN75175 quadruple differential line receivers.

Function Tables

DRIVER

INPUT

ENABLE

OUTPUTS

D

DE

A

B

H

H

H

L

L

H

L

H

X

L

Z

Z

RECEIVER

DIFFERENTIAL INPUTS

ENABLE

OUTPUT

A–B

RE

R

VID ≥ 0.2 V

L

H

–0.2 V < VID < 0.2 V

L

?

VID ≤ –0.2 V

L

L

X

H

Z

Open

L

?

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

X = irrelevant, Z = high impedance (off)

logic diagram (positive logic)

DE

RE

R

6

7

3

1

2

B

A

Bus

D

4