Product details

Number of receivers 1 Number of transmitters 1 Duplex Half Supply voltage (Nom) (V) 5 Signaling rate (Max) (Mbps) 0.25 IEC 61000-4-2 contact (+/- kV) 12 Fault protection (V) -18 to 18 Common mode range -7 to 12 Number of nodes 256 Features Auto polarity, IEC ESD protection Isolated No ICC (Max) (mA) 0.9 Rating Catalog Operating temperature range (C) -40 to 85
Number of receivers 1 Number of transmitters 1 Duplex Half Supply voltage (Nom) (V) 5 Signaling rate (Max) (Mbps) 0.25 IEC 61000-4-2 contact (+/- kV) 12 Fault protection (V) -18 to 18 Common mode range -7 to 12 Number of nodes 256 Features Auto polarity, IEC ESD protection Isolated No ICC (Max) (mA) 0.9 Rating Catalog Operating temperature range (C) -40 to 85
SOIC (D) 8 19 mm² 4.9 x 3.9
  • Exceeds Requirements of EIA-485 Standard
  • Bus-Polarity Correction Within 76 ms (tFS)
  • Data Rate: 300 bps to 250 kbps
  • Works With Two Configurations:
    • Failsafe Resistors Only
    • Failsafe and Differential Termination Resistors
  • Up to 256 Nodes on a Bus (1/8 Unit Load)
  • SOIC-8 Package for Backward Compatibility
  • Bus-Pin Protection:
    • ±16 kV HBM protection
    • ±12 kV IEC61000-4-2 Contact Discharge
    • +4 kV IEC61000-4-4 Fast Transient Burst
  • Exceeds Requirements of EIA-485 Standard
  • Bus-Polarity Correction Within 76 ms (tFS)
  • Data Rate: 300 bps to 250 kbps
  • Works With Two Configurations:
    • Failsafe Resistors Only
    • Failsafe and Differential Termination Resistors
  • Up to 256 Nodes on a Bus (1/8 Unit Load)
  • SOIC-8 Package for Backward Compatibility
  • Bus-Pin Protection:
    • ±16 kV HBM protection
    • ±12 kV IEC61000-4-2 Contact Discharge
    • +4 kV IEC61000-4-4 Fast Transient Burst

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 76 ms 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 5-V 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.

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 76 ms 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 5-V 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.

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Technical documentation

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* Data sheet SN65HVD888 Bus-Polarity Correcting RS-485 Transceiver With IEC-ESD Protection datasheet (Rev. C) PDF | HTML 03 Jan 2018
Application note How to Properly Set Up THVD1505 and SN65HVD888 in Applications PDF | HTML 15 Dec 2021
Technical article How much loading can an auto-polarity RS-485 bus support? 24 May 2018
Technical article Power a RS-485 transceiver with a high efficiency flyback converter 27 Dec 2017
Analog Design Journal Correcting cross-wire faults in modern e-metering networks 28 Oct 2013

Design & development

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Evaluation board

RS485-HF-DPLX-EVM — RS-485 half-duplex evaluation module

The RS-485 half-duplex evaluation module (EVM) helps designers evaluate device performance, supporting fast development and analysis of data-transmission systems using any of the SN65HVD1x, SN65HVD2x, SN65HVD7x, SN65HVD8x and SN65HVD96 half-duplex transceivers. The EVM board comes without the (...)
User guide: PDF | HTML
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Simulation model

SN65HVD888 IBIS Model

SLLM221.ZIP (44 KB) - IBIS Model
Simulation tool

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PSpice® for TI is a design and simulation environment that helps evaluate functionality of analog circuits. This full-featured, design and simulation suite uses an analog analysis engine from Cadence®. Available at no cost, PSpice for TI includes one of the largest model libraries in the (...)
Simulation tool

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TINA-TI provides all the conventional DC, transient and frequency domain analysis of SPICE and much more. TINA has extensive post-processing capability that allows you to format results the way you want them. Virtual instruments allow you to select input waveforms and probe circuit nodes voltages (...)
User guide: PDF
Reference designs

TIDA-00263 — Isolated auto-polarity RS-485 transceiver reference design

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 (...)
Design guide: PDF
Schematic: PDF
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SOIC (D) 8 View options

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