SN751177, SN751178

DUAL DIFFERENTIAL DRIVERS AND RECEIVERS

SLLS059D – FEBRUARY 1990 – REVISED MAY 1999

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POST OFFICE BOX 655303

Standards TIA/EIA-422-B and TIA/EIA-485-A

and ITU Recommendations V.10 and V.11

on Long Bus Lines in Noise Environments

Limiting

Range of –12 V to 12 V

description

The SN751177 and SN751178 dual differential

drivers and receivers are monolithic integrated

circuits that are designed for balanced multipoint

bus transmission at rates up to 10 Mbit/s. They are

designed

to

improve

the

performance

of

full-duplex data communications over long bus

lines and meet ANSI Standards TIA/EIA-422-B

and TIA/EIA-485-A and ITU Recommendations

V.10 and V.11.

The SN751177 and SN751178 driver outputs provide limiting for both positive and negative currents and

thermal-shutdown protection from line-fault conditions on the transmission bus line.

The receiver features high input impedance of at least 12 k

Ω, an input sensitivity of ±200 mV over a

common-mode input voltage range of –12 V to 12 V, and typical input hysteresis of 50 mV. Fail-safe design

ensures that if the receiver inputs are open, the receiver outputs always will be high.

The SN751177 and SN751178 are characterized for operation from –20

°C to 85°C.

Copyright

© 1999, Texas Instruments Incorporated

PRODUCTION DATA information is current as of publication date.

Products conform to specifications per the terms of Texas Instruments

standard warranty. Production processing does not necessarily include

testing of all parameters.

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.

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1B

1A

1R

RE

2R

2A

2B

GND

1D

1Y

1Z

DE

2Z

2Y

2D

SN751177 ...N OR NS† PACKAGE

(TOP VIEW)

† The NS package is only available taped and reeled.

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1B

1A

1R

1DE

2R

2A

2B

GND

1D

1Y

1Z

2DE

2Z

2Y

2D

SN751178 ...N OR NS† PACKAGE

(TOP VIEW)