±15kV ESD Protected, 3.3V, 1/8th Load, Failsafe RS-485/RS-422 Transceiver

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The SP3078E differential line transceiver is suitable for bi-directional communication on balanced multipoint bus transmission lines and complies with both RS-485 and RS-422 EIA standards. This device consists of a differential driver and differential receiver and operates from a 3.3V power supply.

High receiver input impedance allows a large number of transceivers to share a common data bus while maintaining signal margin and without excessive loading or use of expensive repeaters. The high impedance driver output is maintained over the entire common-mode voltage range from -7 to +12V. Receivers will failsafe to logic 1 output when inputs are open, shorted or terminated. Drivers include built-in short circuit protection and a thermal over load shutdown to protect against excessive power dissipation from bus contention or cable faults. All RS-485 inputs are ESD protected up to ±15kV (Air-Gap and Human Body Model) and up to ±8kV Contact discharge (IEC 1000-4-2).

 

FEATURES ±15kV ESD protection for RS-485 pins 3.3V low power operation Advanced receiver failsafe protection for open, shorted or terminated lines Up to 256 transceivers may share bus Very low load for 8x greater fanout Hot Swap glitch protection RE and DE Thermal shutdown protects against driver contention SP3078E in half-duplex (8-pin) 16Mbps high speed Small form factor SO-narrow packages Industrial (-40 to +85ºC) and extended (-40 to +125ºC) temperature grades

APPLICATIONS Industrial control Utility meters Building automation Instrumentation Point-of-sale   Block Diagram

 

 

 Featured Products

Part Number		Description	Data Sheet	App. Notes
SP3078EEN-L		High Speed, 3.3V, 15kV, Failsafe RS-485/RS-422 Half-Duplex
SP3078EMN-L		High Speed, 3.3V, 15kV, Failsafe RS-485/RS-422 Half-Duplex

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