STMicroelectronics RS485/RS422 Differential Line Transceiver IC 3.3V, 12Mbps, 8-Pin SO ST3485EIDT

STMicroelectronics ST3485EIDT is a low power, 3.3 V differential line transceiver designed for RS-485 and RS-422 communication standards. It supports half duplex operation with one driver and one receiver, ensuring robust data transmission at speeds up to 12 Mbps. The device is designed for industrial, automotive, and communication applications where reliable differential signaling is required.

The ST3485EIDT features comprehensive ±15 kV ESD protection on both transmitter and receiver lines, enhancing durability in harsh environments. Its thermal shutdown mechanism and short-circuit current limiting protect the device from damage during driver overload conditions.

This transceiver IC operates from a single 3.3 V supply, eliminating the need for external charge pumps and simplifying system design. It is interoperable with 5 V logic, providing broad compatibility with various logic families. The guaranteed 12 Mbps data rate and -7 to 12 V common mode input voltage range ensure high performance in industrial data networking.

With a compact 8-pin SO surface mount package measuring 5 mm in length, 6.2 mm in width, and 1.75 mm in height, the ST3485EIDT is suited for space-constrained designs. It also meets stringent automotive standards including AEC-Q1 and AEC-Q3, making it ideal for automotive communication networks.

Operates on single 3.3 V supply with no charge pump required. Enhanced ±15 kV ESD protection for robustness. Half duplex RS-485/RS-422 transceiver supporting 12 Mbps data rate. Thermal shutdown and current limiting protect against driver faults.

Compatible with 5 V logic inputs and outputs. Wide operating temperature range from -40°C to 125°C. Complies with automotive AEC-Q100 and AEC-Q1 standards. Compact SO8 surface mount package dimensions: 5 mm × 6.2 mm × 1.75 mm.

This line transceiver IC is widely used in industrial automation, automotive communication, and data networking equipment where differential signaling and noise immunity are critical. It supports connecting up to 64 transceivers on the bus, providing flexibility for large scale RS-485 networks.

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