Internal ESD protection circuits protect the transceiver against electrostatic discharges (ESD) according to IEC 61000-4-2 of up to ±18 kV and against electrical fast transients (EFT) according to IEC 61000-4-4 of up to ±4 kV. With careful system design, one could achieve ±4 kV EFT Criterion A (no data loss when transient noise is present).
The THVD14xx device family provides internal biasing of the receiver input thresholds in combination with large input-threshold hysteresis. The receiver output remains logic high under a bus-idle or bus-short conditions without the need for external failsafe biasing resistors. Device operation is specified over a wide ambient temperature range from –40°C to 125°C.