SO8

Features

•

ESD protection

–

– ±15 kV human body model

–

– ±8 kV IEC 1000-4-2 contact discharge

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Operates from a single 3.3 V supply - no charge pump required

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Interoperable with 5 V logic

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1 μA low current shutdown mode max.

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Guaranteed 12 Mbps data rate

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-7 to 12 common mode input voltage range

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Half duplex versions available

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Industry standard 75176 pinout

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Current limiting and thermal shutdown for driver overload protection

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Guaranteed high receiver output state for floating, shorted or terminated inputs

with no signal present

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Allows up to 64 transceivers on the bus

Description

The ST1480US 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 ST1480US transmits and receives at a guaranteed data

rate of at least 12 Mbps. All transmitter outputs and receiver inputs are protected

to ±15 kV using human body model. Driver is short-circuit current limited and is

protected against excessive power dissipation by thermal shutdown circuitry that

places the driver outputs into a high-impedance state.

The ST1480US input has a true fail-safe feature that guarantees a logic high output if

both inputs are open circuit, shorted together or in the presence of a termination with

no signal on the bus.

Product status link

ST1480US

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

transceiver

ST1480US

Datasheet

DS13697 - Rev 1 - April 2021

For further information contact your local STMicroelectronics sales office.

www.st.com