TP8485E-SR

The TP8485E-SR are IEC61000 ESD protected, 3V~5.5V powered transceivers that meet the RS-485 and RS-422 standards for balanced communication. Driver outputs and receiver inputs are protected against ±18kV ESD strikes without latch-up.

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TP8485E-SR Description

The TP8485E are IEC61000 ESD protected, 3V~5.5V powered transceivers that meet the RS-485 and RS-422 standards for balanced communication. Driver outputs and receiver inputs are protected against ±18kV ESD strikes without latch-up.Transmitters in this family deliver exceptional differential output voltages (2.5V min/5Vcc), into the RS-485 require 54Ω load, for better noise immunity, or to allow up to eight 120Ω terminations in “star” topologies. These devices have very low bus currents so they present a true “1/8 unit load” to the RS-485 bus. This allows up to 256 transceivers on the network without using repeaters.Receiver (Rx) inputs feature a “Full Fail-Safe” design,which ensures a logic high Rx output if Rx inputs are floating, shorted, or on a terminated but undriven bus. Rx outputs feature high drive levels - typically 25mA @ VOL= 1V (to ease the design of optocoupled isolated interfaces).The TP8485E is available in an SOIC-8 and MSOP-8 package, and is characterized from –40°C to 125°C.

TP8485E-SR Features

 Exceeds Requirements of EIA-485 Standard

 Hot Plug Circuitry - Tx and Rx Outputs RemainThree-State During Power-up/Power-down Data Rate: Up to 250 kbps

 Full Fail-safe (Open, Short, Terminated)Receivers

 Up to 256 Nodes on a Bus (1/8 unit load)

 Wide Supply Voltage 3V to 5.5V

 SOIC-8 Package for Backward Compatibility

 Bus-Pin Protection:– ±12 kV HBM protection

TP8485E-SR Applications

 E-Metering Networks

 Industrial Automation

 HVAC Systems