The SN65HVD888 is a low-power RS-485 transceiver with automatic bus-polarity correction and transient protection. Upon hot plug-in, the device detects and corrects the bus polarity within the first 76ms of bus idling. On-chip transient protection protects the device against IEC61000 ESD and EFT transients. This device has robust drivers and receivers for demanding industrial applications. The bus pins are robust to electrostatic discharge (ESD) events, with high levels of protection to Human-Body Model (HBM), Air-Gap Discharge, and Contact Discharge specifications.
The device combines a differential driver and a differential receiver, which operate together from a single 5V power supply. The driver differential outputs and the receiver differential inputs are connected internally to form a bus port suitable for half-duplex (two-wire bus) communication. The device features a wide common-mode voltage range making the device suitable for multi-point applications over long cable runs. The SN65HVD888 is available in an SOIC-8 package, and is characterized from –40°C to 125°C.
| Top documentation | Type | Title | Format options | Date |
|---|---|---|---|---|
| * | Data sheet | SN65HVD888 Bus-Polarity Correcting RS-485 Transceiver With IEC-ESD Protection datasheet (Rev. D) | PDF | HTML | Sep 3, 2025 |
| Application note | How to Properly Set Up THVD1505 and SN65HVD888 in Applications | PDF | HTML | Dec 15, 2021 | |
| Technical article | How much loading can an auto-polarity RS-485 bus support? | PDF | HTML | May 24, 2018 | |
| Technical article | Power a RS-485 transceiver with a high efficiency flyback converter | PDF | HTML | Dec 27, 2017 | |
| Analog design Journal | Correcting cross-wire faults in modern e-metering networks | Oct 28, 2013 |
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This reference design demonstrates an isolated RS-485 bus node with automatic correction of a reversed bus signal polarity caused by cross-wire faults. The design provides transient protection protecting the signal path against ESD, EFT, and surge transients specified in the IEC 61000 family of (...)
| Package | Pins | CAD symbols, footprints & 3D models |
|---|---|---|
| SOIC (D) | 8 | Ultra Librarian |
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