ST485B:low power RS-485/RS-422 transceiver, [-40oC, 85oC] temperature range

The ST485 is al low power transceiver for RS-485 and RS-422 communication. Each part contains one driver and one receiver.

This transceiver draw 300 μA (typ.) of supply current when unloaded or fully loaded with disabled drivers.

It operates from a single 5 V supply.

Driver is short-circuit current limited and is protected against excessive power dissipation by thermal shutdown circuitry that placed the driver outputs into a high-impedance state.

The ST485 is designed for bi-directional data communications on multipoint bus transmission line (half-duplex applications).

The ST485 is available in three temperature range: commercial (0 °C to 70 °C), industrial (- 40 °C to 85 °C) and automotive (- 55 °C to 125 °C).

Key Features

  • Operate from a single 5 V supply
  • 30 ns propagation delay, 5 ns skew
  • Allows up to 64 transceivers on the bus
  • Low quiescent current: 300 μA
  • - 7 V to 12 V common mode input voltage range
  • Designed for RS-485 interface application
  • 70 mV typical input hysteresis
  • Current limiting and thermal shutdown for driver overload protection
  • Driver maintains high impedance in 3-state or with the power OFF
Product Specifications
DescriptionVersionSize
DS2037: Low power RS-485/RS-422 transceiver16.2719 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
ST485BDRSO-8Tape And Reel-4085-0.621000NECEAR99CHINA
Quality & Reliability
Part NumberPackageGradeRoHS Compliance GradeMaterial Declaration**
ST485BDRSO-8IndustrialEcopack3md_o7-wspc-so-wspc-08-wspc-.15jedec_bko7-wspc-u494jc3.pdf
md_o7-wspc-so-wspc-08-wspc-.xml
Low power RS-485/RS-422 transceiver ST485B
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
md_o7-wspc-so-wspc-08-wspc-.15jedec_bko7-wspc-u494jc3.pdf ST485B
md_o7-wspc-so-wspc-08-wspc-.xml TS4871