Advanced-Failsafe RS-485/RS-422 Transceiver ⅛^th Unit Load, Slew-Limited, ±15kV ESD Protected

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The SP3080E is designed for reliable, bi-directional communication on multipoint bus transmission lines. The device contains one differential driver and one differential receiver. The SP3080E is a full-duplex device.

This device is ruggedized for use in harsh operating conditions over the entire common mode voltage range from -7V to +12V. The receiver is specially designed to failsafe to a logic high output state if the inputs are left un-driven or shorted. All RS-485 bus pins are protected against severe ESD events up to ±15kV (Air-Gap and Human Body Model) and up to ±8kV Contact Discharge (IEC 1000-4-2). The driver is protected from excess current flow caused by bus contention or output short circuits by both an internal current limit and a thermal overload shutdown. The device is rated for industrial (-40ºC to +85ºC) or extended (-40ºC to +125ºC) operating temperatures. The receiver has exceptionally high input impedance, which places only 1/8th the standard load on a shared bus. Up to 256 transceivers may coexist while preserving full signal margin.

The device operates from a single 5.0V power supply and draws negligible quiescent power. The SP3080E may independently enable and disable its driver and receiver and enter a low power shutdown mode if both driver and receiver are disabled. The output maintains high impedance in shutdown or when powered off.

SP3081E through SP3089E will be available shortly.

 

FEATURES Full-duplex RS-485 transceiver 5.0V single supply operation Slew rate controlled driver, low EMI 115kbps data rate Receiver fail-safe on open, short or terminated lines 1/8th unit load, 256 transceivers on bus Robust ESD specifications: ±15kV Human Body Model ±15kV IEC1000-4-2 Air Discharge ±8kV IEC1000-4-2 Contact Discharge Hot Swap glitch protection on control inputs Driver short circuit current limit and thermal shutdown for overload protection Ultra low 400µA quiescent current 1µA shutdown mode Industry standard package footprints

APPLICATIONS Motor control Building automation Security systems Remote meter reading Long or un-terminated transmission lines

 

 

 

 

 Featured Products

Part Number		Description	Data Sheet	App. Notes
SP3080EEN-L		5V, 15kV, Failsafe RS-485/RS422 Full Duplex with Slew Limit

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