Product details


Number of receivers 1 Number of transmitters 1 Duplex Half Supply voltage (Nom) (V) 5 Signaling rate (Max) (Mbps) 0.5 IEC 61000-4-2 contact (+/- kV) 8 Fault protection (V) -18 to 18 Common mode range -7 to 12 Number of nodes 256 Features IEC ESD protection Isolated No ICC (Max) (mA) 0.66 Rating Catalog Operating temperature range (C) -40 to 125 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


  • Meets or Exceeds the Requirements of the TIA/EIA-485A Standard and the State Grid Corporation of China (SGCC) Part 11 Serial Communication Protocol RS-485 Standard
  • 4.5 V to 5.5 V Supply Voltage
  • Half-Duplex RS-422/RS-485
  • Bus I/O Protection
    • ± 16 kV HBM ESD
    • ± 8 kV IEC 61000-4-2 Contact Discharge
    • ± 10 kV IEC 61000-4-2 Air Gap Discharge
    • ± 2 kV IEC 61000-4-4 Fast Transient Burst
  • Extended Industrial Temperature Range: -40°C to 125°C
  • Large Receiver Hysteresis for Noise Rejection
  • Low Power Consumption
    • Low Standby Supply Current: < 1 µA
    • Quiescent During Operation: < 660 µA
  • Glitch-Free Power-Up/Down for Hot Plug-in Capability
  • Open, Short, and Idle Bus Failsafe
  • 1/8 Unit Load Options (Up to 256 Bus Nodes)
  • Low EMI 500 kbps
open-in-new Find other RS-485 & RS-422 transceivers


THVD1500 is a robust half-duplex RS-485 transceiver for industrial applications. The bus pins are immune to high levels of IEC Contact Discharge ESD events eliminating need of additional system level protection components.

The device operates from a single 5-V supply. The wide common-mode voltage range and low input leakage on bus pins make THVD1500 suitable for multi-point applications over long cable runs.

THVD1500 is available in industry standard 8-pin SOIC package for drop-in compatibility. The device is characterized from –40°C to 125°C.

open-in-new Find other RS-485 & RS-422 transceivers
Similar products you might be interested in
open-in-new Compare products
Pin-for-pin with same functionality to the compared device.
THVD1510 ACTIVE 5V RS-485 Transceivers With ±18kV IEC ESD Protection This pin-to-pin compatible device has increased IEC ESD (18 kV), EFT performance and 500-kbps operation
THVD1520 ACTIVE 5-V RS-485 transceiver up to 10 Mbps with ±8-kV IEC ESD protection Pin-to-pin device that offers 10Mbps data rate, integrated 8-kV IEC ESD and 4-kV IEC EFT protections
THVD1550 ACTIVE 5-V RS-485 transceiver with ±18-kV IEC ESD protection This pin-to-pin compatible device has increased IEC ESD (18 kV), EFT performance and 50-Mbps operation
Same functionality with different pin-out to the compared device.
NEW THVD1400 ACTIVE 3.3-V to 5-V RS-485 transceiver in small package with ±8-kV IEC ESD protection Supports 3-V to 5.5-V supply voltage.

Technical documentation

star = Top documentation for this product selected by TI
No results found. Please clear your search and try again.
View all 6
Type Title Date
* Data sheet THVD1500 500 kbps RS-485 Transceivers With ±8-kV IEC ESD Protection datasheet (Rev. A) Nov. 05, 2018
Technical article Frequently asked questions and answers for RS-485 transceivers Apr. 09, 2019
Technical article Can your RS-485 communication survive the great outdoors? Mar. 29, 2019
Technical article What is an EFT? Part 2 Jul. 17, 2018
Technical article How to choose a TVS diode for RS-232, RS-485 and CAN based on voltage ratings Nov. 13, 2017
Application note Design for State Grid Corporation of China RS-485 Standard – THVD1500 Oct. 16, 2017

Design & development

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

Hardware development

document-generic User guide
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 (...)

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

  • 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

SLLM361.ZIP (31 KB) - IBIS Model
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 (...)
  • 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
  • (...)
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

One-phase shunt electricity meter reference design using standalone ADCs
TIDA-010036 — This reference design implements Class 0.5 single-phase energy measurement using standalone multi-channel analog-to-digital converters (ADC) to sample a shunt current sensor. With the combination of the shunt sensor and a compact magnetically immune power supply, the design provides protection (...)
document-generic Schematic
Accurate gauging and 50-μA standby current, 13-S, 48-V li-ion battery pack reference design
TIDA-010030 — This reference design is a low standby and ship mode current consumption and high SOC gauging accuracy 13S, 48-V Li-ion battery pack design. It monitors each cell voltage, pack current and temperature with high accuracy and protects the Li-ion battery pack against overvoltage, undervoltage, over (...)
document-generic Schematic
High accuracy split-phase CT electricity meter reference design using standalone ADCs
TIDA-010037 — This reference design implements Class 0.1 split-phase energy measurement using high-performance, multi-channel analog-to-digital converters (ADC). The independent ADC samples the output of current transformers (CT) at 8 kHz to measure the current and voltage of each leg of the AC mains. The (...)
document-generic Schematic
Protecting RS-485 transceivers from sustained high voltage/electrical over-stress reference design
TIDA-060027 — This reference design proposes an implementation of combining Positive Temperature Coefficient (PTC) fuses and Silicon Diode Alternating Current (SIDAC) devices to keep the transceivers alive under sustained exposure to high voltage. It highlights the capability of this particular protection device (...)
document-generic Schematic
16S-17S Battery pack reference design with low current consumption
TIDA-010074 — This reference design is a low standby and low ship mode current consumption 16S-17S LiFePO4 Li-ion battery pack design for telecom battery backup and emotorcycles. It was implemented for a 2-layer PCB. The 9S-15S AFE bq76940 monitors the lower 15 cells voltage and a two-channel general purpose (...)
document-generic Schematic
Universal data concentrator reference design supporting Ethernet, 6LoWPAN RF mesh and more
TIDA-010032 — IPv6-based grid communications are becoming the standard choice in industrial markets and applications like smart meters and grid automation. The universal data concentrator design provides a complete IPv6-based network solution integrated with Ethernet backbone communication, 6LoWPAN RF mesh (...)
document-generic Schematic

CAD/CAE symbols

Package Pins Download
SOIC (D) 8 View options

Ordering & quality

Information included:
  • RoHS
  • Device marking
  • Lead finish/Ball material
  • MSL rating/Peak reflow
  • MTBF/FIT estimates
  • Material content
  • Qualification summary
  • Ongoing reliability monitoring

Recommended products may have parameters, evaluation modules or reference designs related to this TI product.

Support & training

TI E2E™ forums with technical support from TI engineers

Content is provided "as is" by TI and community contributors and does not constitute TI specifications. See terms of use.

If you have questions about quality, packaging or ordering TI products, see TI support. ​​​​​​​​​​​​​​