D−14

N−14

RSA−16

1

FEATURES

DESCRIPTION

1

2

3

4

5

6

7

14

13

12

11

10

9

8

NC

R

RE

DE

D

GND

GND

A

B

Z

Y

NC

DORNPACKAGE

(TOP VIEW)

NC − Nointernalconnection

logic diagram(positivelogic)

R

RE

D

DE

B

A

Z

Y

11

12

10

9

2

3

5

4

16 15 14 13

5

6

7

8

1

2

3

4

12

11

10

9

A

B

Z

Y

NC

R

RE

DE

RSA PACKAGE

(TOP VIEW)

Pins6and7areconnectedtogetherinternally

Pins13and14areconnectedtogetherinternally

SN55LBC180

SN65LBC180

SN75LBC180

LOW-POWER RS-485 LINE DRIVER AND RECEIVER PAIRS

2

• Designed for High-Speed Multipoint Data

Transmission Over Long Cables

• Operate With Pulse Durations as Low as 30 ns

• Low Supply Current . . . 5 mA Max

• Meet or Exceed the Requirements of ANSI

Standard RS-485 and ISO 8482:1987(E)

• 3-State Outputs for Party-Line Buses

• Common-Mode Voltage Range of –7 V to 12 V

• Thermal Shutdown Protection Prevents

Driver Damage From Bus Contention

• Positive and Negative Output Current

Limiting

• Pin Compatible With the SN75ALS180

The SN55LBC180, SN65LBC180 and SN75LBC180

differential driver and receiver pairs are monolithic

integrated circuits designed for bidirectional data

communication over long cables that take on the

characteristics

of

transmission

lines.

They

are

balanced, or differential, voltage mode devices that

meet

or

exceed

the

requirements

of

industry

standards ANSI RS-485 and ISO 8482:1987(E).

These devices are designed using TI's proprietary

LinBiCMOS™ with the low-power consumption of

CMOS and the precision and robustness of bipolar

transistors in the same circuit.

this deviceinfo section is for space between the para and table

ORDERING INFORMATION

PACKAGE

PART NUMBER

PART MARKING

PDIP

SN75LBC180N

SN75LBC180N

0°C to 70°C

SOIC

SN75LBC180D

7LB180

QFN

SN75LBC180RSA

LB180

PDIP

SN65LBC180N

65LBC180N

–40°C to 85°C

SOIC

SN65LBC180D

6LB180

QFN

SN65LBC180RSA

BL180

–55°C to 125°C

QFN

SN55LBC180RSA

SN55LBC180

1

Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of Texas

Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet.

2

LinBiCMOS is a trademark of Texas Instruments.

PRODUCTION DATA information is current as of publication date.

Copyright © 1994–2009, Texas Instruments Incorporated

Products conform to specifications per the terms of the Texas

Instruments standard warranty. Production processing does not

necessarily include testing of all parameters.