ST3485EBDR Datasheet

3.3 V powered, 15 kV ESD protected, up to 12 Mbps RS-485/RS-422 transceiver


The ST3485E is ±15 kV ESD protected, 3.3 V low power transceiver for RS-485 and RS-422 communications. The device contains one driver and one receiver in half duplex configuration. The ST3485E transmits and receives at a guaranteed data rate of at least 12 Mbps.

■ ESD protection
  – ±15 kV human body model
  – ±8 kV IEC 1000-4-2 contact discharge
■ Operate from a single 3.3 V supply - no charge pump required
■ Interoperable with 5 V logic
■ 1 µA low current shutdown mode max
■ Guaranteed 12 Mbps data rate
■ -7 to 12 V common mode input voltage range
■ Half duplex versions available
■ Industry standard 75176 pinout
■ Current limiting and thermal shutdown for driver overload protection
■ Guaranteed high receiver output state for floating inputs with no signal present
■ Allow up to 64 transceivers on the bus




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Manufacturer information


STMicroelectronics is a global independent semiconductor company and is a leader in developing and delivering semiconductor solutions across the spectrum of microelectronics applications. An unrivaled combination of silicon and system expertise, manufacturing strength, Intellectual Property (IP) portfolio and strategic partners positions the Company at the forefront of System-on-Chip (SoC) technology and its products play a key role in enabling today's convergence trends

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