Overview
The THVD1550DR from Texas Instruments is a part of the THVD15xx family of RS-485/RS-422 transceivers. These devices are designed to operate in rugged industrial environments and are characterized by their robustness against high levels of electrical fast transients (EFT) and electrostatic discharge (ESD) events. The THVD1550DR is a half-duplex transceiver that operates from a single 5-V supply and is available in SOIC and VSSOP packages, making it suitable for space-constrained applications. It supports data transmission rates up to 50 Mbps and features an extended common-mode voltage range, making it ideal for multi-point applications over long cable runs.
Key Specifications
| Parameter | Value | Unit |
|---|---|---|
| Supply Voltage | 4.5 V to 5.5 V | V |
| ESD Protection | ±18 kV IEC 61000-4-2 Contact Discharge, ±25 kV IEC 61000-4-2 Air-Gap Discharge, ±4 kV IEC 61000-4-4 EFT | kV |
| Common-mode Voltage Range | ±15 V | V |
| Data Rate | Up to 50 Mbps | Mbps |
| Operating Temperature | -40°C to 125°C | °C |
| Package Type | SOIC, VSSOP | |
| Number of Receivers | 1 | |
| Number of Transmitters | 1 | |
| Standby Supply Current | < 1 µA | µA |
| Current During Operation | < 1 mA | mA |
Key Features
- 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, and ±4 kV IEC 61000-4-4 EFT.
- Low EMI with data rates of 500 kbps and 50 Mbps.
- Extended operational common-mode voltage range: ±15 V.
- Large receiver hysteresis for noise rejection.
- Low power consumption with standby current less than 1 µA and operation current less than 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, and SOIC for drop-in compatibility.
Applications
- Motor Drives
- Factory Automation and Control
- Grid Infrastructure
- Building Automation
- HVAC Systems
- Video Surveillance
- Process Analytics
- Telecom Infrastructure
Q & A
- What is the supply voltage range for the THVD1550DR? The supply voltage range is 4.5 V to 5.5 V.
- What level of ESD protection does the THVD1550DR offer? It offers ±18 kV IEC 61000-4-2 ESD Contact Discharge, ±25 kV IEC 61000-4-2 ESD Air-Gap Discharge, and ±4 kV IEC 61000-4-4 EFT protection.
- What are the supported data rates for the THVD1550DR? The device supports data rates up to 50 Mbps.
- What is the operating temperature range of the THVD1550DR? The operating temperature range is -40°C to 125°C.
- What types of packages are available for the THVD1550DR? It is available in SOIC and VSSOP packages.
- How many receivers and transmitters does the THVD1550DR have? It has one receiver and one transmitter.
- What is the standby supply current of the THVD1550DR? The standby supply current is less than 1 µA.
- Does the THVD1550DR support hot plug-in capability? Yes, it supports glitch-free power-up/down for hot plug-in capability.
- What are some common applications for the THVD1550DR? Common applications include motor drives, factory automation, grid infrastructure, building automation, HVAC systems, video surveillance, process analytics, and telecom infrastructure.
- How does the THVD1550DR handle bus failsafe conditions? The device features open, short, and idle bus failsafe, ensuring the receiver output remains logic high under these conditions without the need for external failsafe biasing resistors.
