LTC2876/LTC2877, PROFIBUS RS485 Transceivers

By Analog Devices Inc 45

LTC2876/LTC2877, PROFIBUS RS485 Transceivers

Analog Devices’ LTC2876/LTC2877 are PROFIBUS RS485 transceivers with a supply voltage of 4.5 V to 5.5 V but can operate down to 3 V with reduced supply current. The devices are designed for PROFIBUS-DP master and PROFIBUS-DP slave applications. They are fully compatible with IEC 61158-2, type 3: medium attachment unit (MAU). With operation up to 20 Mbps, the LTC2876/LTC2877 supports all PROFIBUS data rates up to 12 Mbps.

The LTC2876/LTC2877 are exceptionally robust, tolerating ±60 V faults on the bus pins and protected to ±52 kV ESD. These devices are suitable for harsh environments or where 24 V power might be inadvertently connected. Extended ±25 V input common mode range and full fail-safe operation improve data communication reliability in noisy systems.

 
Features  
  • Low noise: 1.6 ppmp-p (0.1 Hz to 10 Hz)
  • Wide supply range to 36 V
  • Low thermal hysteresis: LS8 15 ppm (-40°C to +125°C)
  • Long-term drift: (LS8) 15 ppm/√kHr
  • Fully specified from -55°C to +125°C
  • Line regulation (up to 36 V): 5 ppm/V max.
  • Low dropout voltage: 100 mV max.
  • Sinks and sources ±10 mA
  • Load regulation at 10 mA: 8 ppm/mA max.
  • Available output voltage options: 1.25 V, 2.048 V, 2.5 V, 3 V, 3.3 V, 4.096 V, 5 V
Applications
  • Medical
  • Precision regulators
  • Process and control
  • Data acquisition systems
  • Automotive control, monitoring

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