SN55LBC176, SN65LBC176, SN65LBC176Q, SN75LBC176

DIFFERENTIAL BUS TRANSCEIVERS

SLLS067H − AUGUST 1990 − REVISED DECEMBER 2010

2

POST OFFICE BOX 655303

description (continued)

The SN55LBC176, SN65LBC176, SN65LBC176Q, and SN75LBC176 combine 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

ranges, making the device suitable for party-line applications. Very low device supply current can be achieved

by disabling the driver and the receiver.

These transceivers are suitable for ANSI Standard TIA/EIA−485 (RS-485) and ISO 8482 applications to the

extent that they are specified in the operating conditions and characteristics section of this data sheet. Certain

limits contained in TIA/EIA−485−A and ISO 8482:1987 (E) are not met or cannot be tested over the entire military

temperature range.

The SN55LBC176 is characterized for operation from −55°C to 125°C. The SN65LBC176 is characterized for

operation from −40°C to 85°C, and the SN65LBC176Q is characterized for operation from −40°C to 125°C.

The SN75LBC176 is characterized for operation from 0°C to 70°C.

logic diagram (positive logic)

2

EN1

B

A

1

4

2

R

D

RE

7

6

D

RE

R

7

6

4

1

2

B

A

Bus

3

EN2

1

1

DE

3

DE

IEC Publication 617-12.

AVAILABLE OPTIONS

PACKAGE

PART NUMBER

PART MARKING

0°C to 70°C

SOP

SN75LBC176D

7LB176

0°C to 70°C

PDIP

SN75LBC176P

75LBC176

40°C to 85°C

SOP

SN65LBC176D

6LB176

−40°C to 85°C

PDIP

SN65LBC176P

65LBC176

40°C to 125°C

SOP

SN65LBC176QD

LB176Q

−40°C to 125°C

SOP

SN65LBC176QDR

LB176Q

55°C to 125°C

LCCC

SNJ55LBC176FK

SNJ55LBC176FK

−55°C to 125°C

CDIP

SNJ55LBC176JG

SNJ55LBC176