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Product details

Parameters

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 open-in-new Find other RS-485 & RS-422 transceivers

Package | Pins | Size

SOIC (D) 8 19 mm² 4.9 x 3.9 open-in-new Find other RS-485 & RS-422 transceivers

Features

  • 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

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open-in-new Find other RS-485 & RS-422 transceivers

Description

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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THVD1505 ACTIVE Bus-polarity correcting RS-485 transceiver with IEC-ESD protection Pin-to-pin device that offers integrated IEC ESD protection (8-kV contact discharge), IEC EFT (2-kV noise immunity).

Technical documentation

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Type Title Date
* Data sheet SN65HVD888 Bus-Polarity Correcting RS-485 Transceiver With IEC-ESD Protection datasheet (Rev. C) Jan. 03, 2018
Technical article How much loading can an auto-polarity RS-485 bus support? May 24, 2018
Technical article Power a RS-485 transceiver with a high efficiency flyback converter Dec. 27, 2017
Application note Correcting cross-wire faults in modern e-metering networks Oct. 28, 2013

Design & development

For additional terms or required resources, click any title below to view the detail page where available.

Hardware development

EVALUATION BOARD Download
document-generic User guide
49
Description
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 RS-485 (...)
Features

The EVM lets you quickly, easily and accurately evaluate TI's family of RS-485 products.

Hardware:
  • RS-485 half-duplex EVM PWB
  • Screw-type SMA jacks and Bergstik headers serve as the I/O connections
  • Banana jacks serve as the DC power input terminals

Design tools & simulation

SIMULATION MODEL Download
SLLM221.ZIP (44 KB) - IBIS Model
SIMULATION TOOL Download
PSpice® for TI design and simulation tool
PSPICE-FOR-TI — 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 (...)
Features
  • Leverages Cadence PSpice Technology
  • Preinstalled library with a suite of digital models to enable worst-case timing analysis
  • Dynamic updates ensure you have access to most current device models
  • Optimized for simulation speed without loss of accuracy
  • Supports simultaneous analysis of multiple products
  • (...)
SIMULATION TOOL Download
SPICE-based analog simulation program
TINA-TI 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 (...)
document-generic User guide

Reference designs

REFERENCE DESIGNS Download
Isolated auto-polarity RS-485 transceiver reference design
TIDA-00263 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 (...)
document-generic Schematic document-generic User guide

CAD/CAE symbols

Package Pins Download
SOIC (D) 8 View options

Ordering & quality

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  • Qualification summary
  • Ongoing reliability monitoring

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