ST485ECN

Drivers, Receivers, Transceivers Overview

The ST485ECN is a low-power RS-485 and RS-422 transceiver manufactured by STMicroelectronics. It integrates one driver and one receiver in a half-duplex configuration, operating from a single 5 V supply. The device supports data rates up to 5 Mb/s with a typical propagation delay of 30 ns. It features ±15 kV electrostatic discharge (HBM) protection on driver outputs and receiver inputs without latch-up. The unit operates within a temperature range of -40 °C to +85 °C and is housed in an SOIC-8 surface-mount package.

Drivers, Receivers, Transceivers Feature Summary

• Integrated ESD protection rated at ±15 kV HBM for robust signal integrity
• Low quiescent current consumption of 300 µA in disabled states
• Thermal shutdown and short-circuit current limiting for driver overload protection
• High-impedance driver state maintained during three-state or power-off conditions

Drivers, Receivers, Transceivers Applications

• Bi-directional data communications on multipoint bus transmission lines
• RS-485 interface applications requiring high noise immunity
• Industrial control systems utilizing half-duplex communication protocols

Drivers, Receivers, Transceivers Procurement Notes

Verify the specific suffix 'N' against the manufacturer's official datasheet to confirm the exact package type and temperature grade. Confirm availability status as distribution channels may list obsolete or end-of-life inventory. Ensure the ordering part number matches the required RoHS compliance and packaging format specified in the latest technical documentation.

Drivers, Receivers, Transceivers Selection Notes

Select this component for designs requiring a single 5 V supply and half-duplex RS-485 connectivity. Verify that the 5 Mb/s data rate meets system timing requirements. Check if the SOIC-8 package fits the PCB layout constraints. Compare against the ST485EX variant if enhanced ESD specifications are necessary for the application environment.

Drivers, Receivers, Transceivers Part Context

The ST485ECN belongs to the ST485E family of low-power transceivers designed for RS-485 and RS-422 standards. This series provides differential line driving capabilities suitable for noisy industrial environments. The ECN designation typically indicates the commercial/industrial temperature range and the specific SOIC-8 surface-mount package configuration offered by STMicroelectronics.

Drivers, Receivers, Transceivers Replacement Considerations

ST485EX: Enhanced ESD protection variant with similar electrical characteristics. ST485EC: Commercial temperature range version potentially available in different packages. ST485EBDR: Surface-mount alternative with reel packaging.