ST490AB:Low power full duplex high speed RS-485/RS-422 transceiver, [-40oC, 85oC] temperature range

The ST490A is a low power transceiver for RS485 and RS-422 communications. The device contains one driver and one receiver in full duplex configuration. The ST490A draws 5mA (typ.) of supply current when unloaded or fully loaded with disabled drivers. It operates from a single 5V supply.

Driver is short-circuit current limited and is protected against excessive power dissipation by thermal shutdown circuitry that place the driver outputs into a high-impedance state. The receiver input has a fail-safe feature that guarantees a logic high output if both inputs are open circuit.

Key Features

  • Current limiting and thermal shutdown for driver overload protection
  • ±4 kV ESD protection
  • Low supply current: 5mA max
  • 70mV typical input hysteresis
  • -7V to 12V common mode input voltage range
  • Operate from a single 5 V supply
  • Designed for 25Mbps operation
Product Specifications
DescriptionVersionSize
DS2962: Low power high speed RS-485/RS-422 transceiver5.2686 KB
Application Notes
DescriptionVersionSize
AN1348: ST485: an RS-485 based interface with lower data bit errors3.2112 KB
Brochures
DescriptionVersionSize
Products and Solutions for Factory Automation and Control1.03 MB
Sample & Buy
Part NumberPackagePacking TypeOperating Temperature (°C) (min)Operating Temperature (°C) (max)AutoshutdownUnit Price (US$) *QuantityECCN (EU)ECCN (US)Country of Origin
ST490ABDRSO-8Tape And Reel-4085-1.011000NECEAR99CHINA
Quality & Reliability
Part NumberPackageGradeRoHS Compliance GradeMaterial Declaration**
ST490ABDRSO-8IndustrialEcopack3
Low power high speed RS-485/RS-422 transceiver ST490AB
ST485: an RS-485 based interface with lower data bit errors ST26C31B
STEVAL-SPIMD20V1 demonstration kit based on the SPIMD20 integrated motor drive STEVAL-SPIMD20V1