Overview
The THVD1451DRBT is a part of the THVD14xx family of RS-485/RS-422 transceivers designed by Texas Instruments. These devices are engineered to operate in rugged industrial environments, offering robust protection against high levels of electrical fast transients (EFT) and electrostatic discharge (ESD) events. The THVD1451DRBT operates from a single supply voltage between 3 V and 5.5 V, making it versatile for various applications. It features an extended common-mode voltage range, which is suitable for multi-point applications over long cable runs. The device is available in a small VSON package, saving board space and providing optimal thermal performance.
Key Specifications
| Parameter | Min | Typ | Max | Unit |
|---|---|---|---|---|
| Supply Voltage (VCC) | -0.5 | 7 | V | |
| Bus Voltage Range | -18 | 18 | V | |
| Input Voltage Range | -0.3 | 5.7 | V | |
| Signaling Rate | 50 Mbps | |||
| Operating Ambient Temperature | -40 | 125 | °C | |
| Junction Temperature | -40 | 150 | °C | |
| Driver Differential Output Voltage | 1.5 | 3.5 | V | |
| Driver Output Rise/Fall Time | 1 | 3 | 6 | ns |
| Propagation Delay | 3 | 10 | 20 | ns |
| Standby Supply Current | < 1 µA | |||
| Current During Operation | < 3 mA |
Key Features
- Compatibility with 3 V to 5.5 V supply voltage
- Differential output exceeds 2.1 V for PROFIBUS compatibility
- Bus I/O ESD protection: ±30 kV HBM, ±18 kV IEC 61000-4-2 contact discharge, ±25 kV IEC 61000-4-2 air-gap discharge, ±4 kV IEC 61000-4-4 fast transient burst
- Extended operational common-mode range: ±15 V
- Low EMI with data rates up to 50 Mbps
- Large receiver hysteresis for noise rejection
- Low power consumption: standby supply current < 1 µA, current during operation < 3 mA
- Extended ambient temperature range: -40°C to 125°C
- Glitch-free power-up/down for hot plug-in capability
- Open, short, and idle bus failsafe
- 1/8 unit load (up to 256 bus nodes)
- Small-size VSON and VSSOP packages for space-constrained applications
Applications
- Motor Drives
- Factory Automation & Control
- Grid Infrastructure
- Building Automation
- HVAC Systems
- Video Surveillance
- Process Analytics
- Wireless Infrastructure
Q & A
- What is the operating supply voltage range of the THVD1451DRBT?
The THVD1451DRBT operates from a single supply voltage between 3 V and 5.5 V.
- What are the key ESD protection features of the THVD1451DRBT?
The device offers ±30 kV HBM, ±18 kV IEC 61000-4-2 contact discharge, ±25 kV IEC 61000-4-2 air-gap discharge, and ±4 kV IEC 61000-4-4 fast transient burst ESD protection.
- What is the maximum data rate supported by the THVD1451DRBT?
The device supports data rates up to 50 Mbps.
- What is the operating ambient temperature range of the THVD1451DRBT?
The device operates over an ambient temperature range of -40°C to 125°C.
- Does the THVD1451DRBT support hot plug-in capability?
Yes, the device features glitch-free power-up/down for hot plug-in capability.
- What is the standby supply current of the THVD1451DRBT?
The standby supply current is less than 1 µA.
- What are the typical applications of the THVD1451DRBT?
The device is used in motor drives, factory automation, grid infrastructure, building automation, HVAC systems, video surveillance, process analytics, and wireless infrastructure.
- What package options are available for the THVD1451DRBT?
The device is available in VSON and SOIC packages.
- Does the THVD1451DRBT have built-in failsafe mechanisms?
Yes, the device includes open, short, and idle bus failsafe mechanisms.
- How many bus nodes can the THVD1451DRBT support?
The device can support up to 256 bus nodes as a 1/8 unit load.
