THVD1550

SOIC (D)

8

19 mm² 4.9 x 3.9

VSSOP (DGK)

8

15 mm² 3 x 4.9

Meets or Exceeds the Requirements of the TIA/EIA-485A Standard
4.5 V to 5.5 V Supply Voltage
Integrated Bus I/O Protection
- ± 30 kV HBM ESD
- ± 18 kV IEC 61000-4-2 ESD Contact Discharge
- ± 25 kV IEC 61000-4-2 ESD Air-Gap Discharge
- ± 4 kV IEC 61000-4-4 Electrical Fast Transient
Extended Operational Common-mode: ± 15 V
Low EMI 500 kbps and 50 Mbps Data Rates
Extended Temperature Range: -40°C to 125°C
Large Receiver Hysteresis for Noise Rejection
Low Power Consumption
- Low Standby Supply Current: < 1 µA
- Current During Operation: < 1 mA
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)
Small-Size VSSOP Packages Save Board Space or SOIC for Drop-in Compatibility

Meets or Exceeds the Requirements of the TIA/EIA-485A Standard
4.5 V to 5.5 V Supply Voltage
Integrated Bus I/O Protection
- ± 30 kV HBM ESD
- ± 18 kV IEC 61000-4-2 ESD Contact Discharge
- ± 25 kV IEC 61000-4-2 ESD Air-Gap Discharge
- ± 4 kV IEC 61000-4-4 Electrical Fast Transient
Extended Operational Common-mode: ± 15 V
Low EMI 500 kbps and 50 Mbps Data Rates
Extended Temperature Range: -40°C to 125°C
Large Receiver Hysteresis for Noise Rejection
Low Power Consumption
- Low Standby Supply Current: < 1 µA
- Current During Operation: < 1 mA
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)
Small-Size VSSOP Packages Save Board Space or SOIC for Drop-in Compatibility

THVD15xx is a family of noise-immune RS-485/RS-422 transceivers designed to operate in rugged industrial environments. The bus pins of these devices are robust to high levels of IEC electrical fast transients (EFT) and IEC electrostatic discharge (ESD) events, eliminating the need for additional system-level protection components.

Each of these devices operates from a single 5-V supply. The devices in this family feature an extended common-mode voltage range which makes them suitable for multi-point applications over long cable runs.

THVD15xx family of devices is available in small VSSOP packages for space-constrained applications. These devices are characterized over ambient free-air temperatures from –40°C to 125°C.

THVD15xx is a family of noise-immune RS-485/RS-422 transceivers designed to operate in rugged industrial environments. The bus pins of these devices are robust to high levels of IEC electrical fast transients (EFT) and IEC electrostatic discharge (ESD) events, eliminating the need for additional system-level protection components.

Each of these devices operates from a single 5-V supply. The devices in this family feature an extended common-mode voltage range which makes them suitable for multi-point applications over long cable runs.

THVD15xx family of devices is available in small VSSOP packages for space-constrained applications. These devices are characterized over ambient free-air temperatures from –40°C to 125°C.

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Technical documentation

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	Type	Title	Date
*	Data sheet	THVD15xx 5-V RS-485 Transceivers With ±18-kV IEC ESD Protection datasheet (Rev. C)	03 Dec 2018
	White paper	RS-485 Basics Series	24 Feb 2021
	E-book	Ein Techniker-Leitfaden für Industrieroboter-Designs	25 Mar 2020
	E-book	E-book: An engineer’s guide to industrial robot designs	12 Feb 2020
	Technical article	Frequently asked questions and answers for RS-485 transceivers	09 Apr 2019
	Technical article	What is an EFT? Part 2	17 Jul 2018
	Technical article	How to calculate the power dissipation of high-speed RS-485 transceivers	14 Jun 2018
	Technical article	What is an EFT?	30 Oct 2017
	Application note	Signal Integrity vs. Transmission Rate and Cable Length for RS-485 Transceivers	29 Aug 2017

Design & development

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Simulation model

THVD1550 IBIS Model

SLLM388.ZIP (35 KB) - IBIS Model

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Reference designs

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TIDA-00731 — IEC ESD, EFT, and Surge Protected RS-485 Reference Design

The TIDA-00731 is a reference design examining how to protect an RS-485 bus against lethal transient waveforms such as IEC ESD, IEC EFT, and IEC surge. The reference design shows the level of protection that can be achieved through the implementation of an external protection scheme on the bus (...)

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TIDA-01630 — High EMC Immunity RS485 Interface Reference Design for Tamagawa Encoders

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TIDA-01401 — High EMC immunity RS-485 interface reference design for absolute encoders

This high EMC immunity reference design demonstrates a RS-485 transceiver to use on both the drive and within encoders such as: EnDat 2.2, BiSS®, Tamagawa™, etc. EMC immunity, particularly immunity against inverter switching noise, is important for position encoder feedback systems (...)

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TIDA-00730 — RS-485 IEC ESD Reference Design

The TIDA-00730 is an reference design examining how to protect an RS-485 bus against leathal transient waveforms such as IEC ESD, IEC EFT, and IEC surge. The reference design shows the level of protection that can be achieved through the implementation of a TVS diode on the bus lines of a standard (...)