SN65LBC176AEP

DIFFERENTIAL BUS TRANSCEIVER

SGLS151C − DECEMBER 2002 − REVISED JULY 2004

2

POST OFFICE BOX 655303

• DALLAS, TEXAS 75265

description/ordering information

The SN65LBC176A-EP differential bus transceiver is a monolithic, integrated circuits designed for bidirectional

data communication on multipoint bus-transmission lines. The SN65LBC176A-EP is designed for balanced

transmission lines and is compatible with ANSI standard TIA/EIA-485-A and ISO 8482. The SN65LBC176A-EP

offers improved switching performance over its predecessors without sacrificing significantly more power.

The SN65LBC176A-EP combines a 3-state, differential line driver and a differential input line receiver, both of

which operate from a single 5-V power supply. The driver and receiver have active-high and active-low enables,

respectively, which can externally connect together to function as a direction control. The driver differential

outputs and the receiver differential inputs connect internally to form a differential input /output (I/O) bus port that

is designed to offer minimum loading to the bus whenever the driver is disabled or VCC = 0. This port features

wide positive and negative common-mode voltage ranges, making the device suitable for party-line

applications. Low device supply current can be achieved by disabling the driver and the receiver.

ORDERING INFORMATION

TA

PACKAGE†

ORDERABLE

PART NUMBER

TOP-SIDE

MARKING

−40

°C to 125°C

SOIC − D

Tape and Reel

SN65LBC176AQDREP

176AEP

−55

°C to 125°C

SOIC − D

Tape and Reel

SN65LBC176AMDREP

176MEP

† Package drawings, standard packing quantities, thermal data, symbolization, and PCB design

guidelines are available at www.ti.com/sc/package.

schematics of inputs and outputs

1 k

Ω

8 V

Input

VCC

Input

100 k

Ω

4 k

Ω

18 k

Ω

4 k

Ω

16 V

16 V

Input

100 k

Ω

4 k

Ω

18 k

Ω

4 k

Ω

16 V

16 V

VCC

VCC

Output

VCC

D, DE, and RE Inputs

A Input

B Input

R Output

40

Ω

8 V

100 k

Ω