iC-HF is a robust line driver/receiver for industrial control applications using RS422 transmission. 6 TTL-compatible hysteresis

inputs control 12 differential outputs, consisting of current-limited, short-circuit-proof push-pull drivers allowing high speed at low EMI. Operation at 3 V to 5 V is supported including reverse polarity protection of the IC and its peripheral circuitry.

Features:

• Versatile 3+3 channel RS422 line driver/receiver.
• Pin-configured as driver (6x) or driver/receiver (3x/3x or 4x/2x).
• Supports BiSS bus structure and BiSS bus loopback.
• Unique Encoder Link mode: analog switches to bridge 9 lines.
• Differential short-circuit-proof push-pull outputs.
• Source/sink driving capability of 20/30 mA typ. at 3 V.
• Reduced EMI due to output current limitation.
• Output shutdown with undervoltage and overtemperature.
• Suits various line impedances, allows 100 Ω termination.
• TTL-compatible hysteresis inputs.
• Up to 10 MHz input/output frequency.
• Open-drain error message output (NERR).
• Reverse-polarity-proof operation from 3.0 V to 5.5 V.
• Reverse-polarity protection by supply-switch (60 mA).
• Operating temperature range of -40 °C to +125 °C.
• Space-saving 32-pin QFN package of 5 mm x 5 mm.

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