iC-HF QFN32-5x5

6-Channel RS422 Encoder Link

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Product description

iC-HF is a robust six differential output channels RS422 line driver for industrial 5 V.
The drivers with low saturation voltage are short-circuit-proof and current limited to reduce EMI.
iC-HF protects against undervoltage and overtemperature and reverse polarity connection and offers with power-good switch up to 60 mA for connected sensors.
Encoder Link links 9 input signals directly to output pins e.g. to access signals for calibration alignment and configuration.
BiSS/SSI (+ bus loopback).


  • 3+3 channel RS-422 line driver/receiver SSI/BiSS transceiver including loopback
  • Reverse polarity protection, differential short-circuit-proof, reduced EMI
  • Unique Encoder Link mode: analog switches to bridge 9 lines
  • Pin configured as 6-ch. driver, or 3+3/4+2 ch. driver/receiver
  • Supports BiSS bus structure and BiSS bus loopback
  • Differential short-circuit-proof push-pull outputs
  • Source/sink driving capability of 30 mA typ. at 3 V
  • Reduced EMI due to output current limitation
  • Output shutdown with undervoltage and overtemperature
  • Suits various line impedances, allows 120 Ohm termination
  • TTL-compatible hysteresis inputs
  • Up to 10 MHz input/output frequency
  • Open-drain error message output (NERR)
  • Periphery supply switch (60 mA)
  • Operation from 3.0 V to 5. V
  • Operating temperature range of -40 °C to +125 °C
  • Space-saving 32-pin QFN package


  • Differential RS422 cable driver
  • ABZ/UVW/SSI/BiSS encoder RS422 PHY
  • Microcontroller peripheries
  • Control engineering
  • BiSS Interface bus structures
  • BiSS Interface bus structure loopback
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