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ST1480ACDR/US

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

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Parameter NameParameter Value
Operating Temp Min Celsius0.0
Operating Temp Max Celsius70.0
ECCN USEAR99
ECCN EUNEC
Packing TypeTape And Reel
RoHs compliantEcopack3
GradeIndustrial
Package NameSO-8

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.

Key features
  • ESD protection
    • – ±15 kV human body model
    • – ±8 kV IEC 1000-4-2 contact discharge
  • Operates 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 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, shorted or terminated inputs with no signal present
  • Allows up to 64 transceivers on the bus