DS36276M National Semiconductor, DS36276M Datasheet

DS36276M

Manufacturer Part Number

DS36276M

Description

Transceiver IC

Manufacturer

National Semiconductor

Datasheets

1.DS36276M.pdf (12 pages)

2.DS36276M.pdf (12 pages)

Specifications of DS36276M

No. Of Drivers

Driver Case Style

SOIC

No. Of Pins

Transceiver Type

Multipoint

Mounting Type

Surface Mount

No. Of Channels

No. Of Driver/receivers

1/1

Peak Reflow Compatible (260 C)

No. Of Receivers

Lead Free Status / RoHS Status

Contains lead / RoHS non-compliant

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Quantity

Price

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DS36276

FAILSAFE Multipoint Transceiver

General Description

The DS36276 FAILSAFE Multipoint Transceiver is designed

for use on bi-directional differential busses. It is compatible

with existing TIA/EIA-485 transceivers, however, it offers an

additional feature not supported by standard transceivers.

The FAILSAFE feature guarantees the receiver output to a

known state when the Interface is in the following conditions:

Floating Line, Idle Line (no active drivers), and Line Fault

conditions (open or short). The receiver output is in a HIGH

state for the following conditions: OPEN Inputs, Terminated

Inputs (50 ), and SHORTED Inputs.

FAILSAFE is a highly desirable feature when the transceiv-

ers are used with Asynchronous Controllers such as UARTs.

Connection and

Logic Diagram

TRI-STATE

is a registered trademark of National Semiconductor Corporation.

See NS Package Number M08A

Order Number DS36276M

DS011383-1

DS011383

Features

n FAILSAFE receiver, RO = HIGH for:

n Compatible with popular interface standards:

n Bi-Directional Transceiver

n Separate driver input, driver enable, receiver enable,

n Wide bus common mode range

n Pin compatible with: DS75176B, DS96176, DS3695 and

n Available in SOIC package

Truth Tables

Driver

Receiver

Receiver FAILSAFE

and receiver output for maximum flexibility

SN75176A and B

— OPEN inputs

— Terminated inputs

— SHORTED inputs

— TIA/EIA-485 (RS-485)

— TIA/EIA-422-A (RS-422-A)

— CCITT Recommendation V.11

— Designed for multipoint transmission

— (−7V to +12V)

Inputs

SHORTED

−500 mV

OPEN

RI–RI

DO/RI

Outputs

www.national.com

Output

DO /RI

July 1998

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