SN65HVD21A - Texas Instruments

SN65HVD21A RS-485 Transceiver

The SN65HVD21A offers performance far exceeding typical RS−485 devices. In addition to meeting all requirements of the TIA/EIA−485−A standard, the device operates over an extended range of common-mode voltage, and has features such as high ESD protection, wide receiver hysteresis, and failsafe operation. This device is ideally suited for long-cable networks,.

Features

1
• Common-Mode Voltage Range (
  –20 V to 25 V) More Than Doubles TIA/EIA-485 Requirement
• Reduced Unit-Load for up to 256 Nodes
• Bus I/O Protection to Over 16-kV HBM
• Failsafe Receiver for Open-Circuit, Short-Circuit and Idle-Bus Conditions
• Low Standby Supply Current 1-µA Max
• More Than 100 mV Receiver Hysteresis APPLICATIONS
• Long Cable Solutions
  – Factory Automation
  – Security Networks
  – Building HVAC
• Severe Electrical Environments
  – Electrical Power Inverters
  – Industrial Drives
  – Avionics DESCRIPTION The SN65HVD21A offers performance far exceeding typical RS−485 devices. In additi.