ADM4850AR Просмотр технического описания (PDF) - Analog Devices

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ADM4850AR

5 V Slew-Rate Limited Half- and Full-Duplex RS-485/RS-422 Transceivers

Analog Devices 

ADM4850–ADM4857

TABLE OF CONTENTS

Specifications..................................................................................... 3

ADM4850/ADM4854 Timing Specifications........................... 4

ADM4851/ADM4855 Timing Specifications........................... 4

ADM4852/ADM4856 Timing Specifications........................... 5

ADM4853/ADM4857 Timing Specifications........................... 5

Absolute Maximum Ratings............................................................ 6

ESD Caution.................................................................................. 6

Pin Configurations and Function Descriptions ........................... 7

Test Circuits....................................................................................... 8

Switching Characteristics ................................................................ 9

Typical Performance Characteristics ........................................... 10

REVISION HISTORY

10/04—Revision 0: Initial Version

Circuit Description......................................................................... 12

Slew-Rate Control ...................................................................... 12

Receiver Input Filtering............................................................. 12

Half-/Full-Duplex Operation ................................................... 12

High Receiver Input Impedance .............................................. 13

Three-State Bus Connection..................................................... 13

Shutdown Mode ......................................................................... 13

Fail-Safe Operation .................................................................... 13

Current Limit and Thermal Shutdown ................................... 13

Outline Dimensions ....................................................................... 14

Ordering Guide .......................................................................... 15

Rev. 0 | Page 2 of 16

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