adm2491e Analog Devices, Inc., adm2491e Datasheet - Page 2

• Manufacturer Part Number: adm2491e
• Description: High Speed, Esd-protected, Half-/full-duplex, Icoupler Isolated Rs-485 Transceiver
• Manufacturer: Analog Devices, Inc.

ADM2491E
TABLE OF CONTENTS
Features .............................................................................................. 1
Applications....................................................................................... 1
Functional Block Diagram .............................................................. 1
General Description ......................................................................... 1
Revision History ............................................................................... 2
Specifications..................................................................................... 3
Absolute Maximum Ratings............................................................ 6
Pin Configuration and Functional Descriptions.......................... 7
Test Circuits....................................................................................... 8
REVISION HISTORY
10/07—Revision 0: Initial Version
Timing Specifications .................................................................. 4
Package Characteristics ............................................................... 4
Regulatory Information (Pending) ............................................ 4
Insulation and Safety-Related Specifications............................ 5
VDE 0884 Insulation Characteristics (Pending)...................... 5
ESD Caution.................................................................................. 6
Rev. 0 | Page 2 of 16
Switching Characteristics .................................................................9
Typical Performance Characteristics ........................................... 10
Circuit Description......................................................................... 12
Applications Information .............................................................. 14
Outline Dimensions ....................................................................... 16
Electrical Isolation...................................................................... 12
Truth Tables................................................................................. 12
Thermal Shutdown .................................................................... 13
Fail-Safe Receiver Inputs ........................................................... 13
Magnetic Field Immunity.......................................................... 13
Isolated Power Supply Circuit .................................................. 14
PCB Layout ................................................................................. 14
Typical Applications................................................................... 15
Ordering Guide .......................................................................... 16