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Description

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.

Features

■ 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