RS-422/423 & RS-485



Small and Powerful RS485 Transceiver,
It’s All About Flexibility and Robustness

Low-power RS-485 transceiver with selectable data rate and compatible with 1.8 V I/Os

A 3.3 V differential line transceiver for RS-485 data transmissions in half-duplex mode, the STR485LV includes an external slew rate select pin able to switch between a fast data rate up to 20 Mbps or a slow data rate up to 250 kbps for longer cables.

Able to interface directly with voltage logic from 1.8 to 3.3 V, this differential driver/receiver is robust over fast transient burst IEC61000-4-4 Class B conditions and the bus pins withstand over ±8kV contact discharge and ±16kV air discharge conditions without latch-up, exceeding IEC 61000-4-2 specifications.

Available in a small (3 x3 mm) DFN10 package with a temperature range from –40 up to +105 °C, the STR485LV is a perfect fit for a wide range of applications including telecom infrastructure, high-speed data links, and low-voltage microcontroller communications.

Low-power differential line transceiver for standard RS485 data transmission in half-duplex mode

The ST4E1240 and ST4E1216 are high-speed RS485 transceivers compatible with either 3.3 V or 5 V rail power supplies.

Thanks to the high speed up to 40 Mbps data rate, they particularly suit multipoint applications over extended cable runs like factory automation and control, robotics, video surveillance, grid infrastructure, and data acquisition.

Packaged in a standard SO-8, the ST4E1216 and ST4E1240 integrates several protections such as a fail-safe receiver for bus open, idle, and shorted conditions, thermal shutdown, hot-swap capability, and bus I/O ESD protection IEC61000-4-2 +/-12kV.