STMicroelectronics ST490AB RS-485/RS-422 Transceiver Datasheet

ST490AB is a low power RS-485/RS-422 transceiver featuring 5mA max supply current, -7V to 12V common mode input voltage range, 70mV typical input hysteresis, 25Mbps operation, single 5V supply, ±4kV ESD protection, current limiting and thermal shutdown


STMicroelectronics ST490AB RS-485/RS-422 Transceiver Datasheet - cover page
Brand
STMicroelectronics
Category
Other Electronics
Document type
Datasheet
Language
English
Pages
17
File format
PDF
File size
695 KB
Published
08 August, 2012
Updated
01 October, 2023
MD5 checksum
A8A576AC12509072532B8D6807A96B49

About this manual

The ST490AB is a low power transceiver designed for RS-485 and RS-422 communications, containing one driver and one receiver in a full duplex configuration. It operates from a single 5 V supply and is designed for 25 Mbps operation with low supply current of 5 mA max.

What's inside

  • Pin configuration
  • Truth tables
  • Maximum ratings
  • Electrical characteristics
  • Test circuit and typical characteristics
  • Package mechanical data
  • Revision history

Specifications

Supply current (no load)5 mA max
Common mode input voltage range-7 V to 12 V
Input hysteresis70 mV typical
Maximum data rate25 Mbps
Supply voltageSingle 5 V
ESD protection+4 kV
Operating temperature range-40 to 85 °C

Frequently asked questions

What is the maximum data rate of the ST490AB?

The device is designed for 25 Mbps operation.

What is the supply current when unloaded?

The supply current is 5 mA maximum.

What is the input hysteresis value?

The typical input hysteresis is 70 mV.

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