Texas Instruments has introduced the THVD1451, a highly reliable and robust RS-485 transceiver that is specifically designed for use in rugged industrial environments. This transceiver offers superior protection against electrical fast transients (EFT) and electrostatic discharge (ESD) events, making it an ideal choice for applications that require high levels of durability and reliability.
The THVD1451 transceiver features bus pins that are robust to high levels of IEC EFT and IEC ESD events. This means that the device can withstand and protect against transient voltage spikes and electrostatic discharges that often occur in industrial environments. With this built-in protection, there is no need for additional system-level protection components, simplifying the design and reducing costs.
The transceiver operates from a single supply voltage between 3 V and 5.5 V, providing flexibility for various industrial applications. Additionally, the THVD1451 offers an extended common-mode voltage range, allowing it to be used in multi-point applications over long cable runs. This feature ensures reliable communication in industrial networks where multiple nodes are connected via long cables.
For space-constrained applications, the THVD1451 is available in a small VSON package. This compact package size enables designers to save valuable board space without compromising on performance or functionality.
Furthermore, the THVD1451 transceiver is characterized over a wide temperature range of -40°C to +125°C, ensuring reliable operation even in harsh environmental conditions. This temperature range makes it suitable for industrial applications that require operation in extreme temperatures.
In summary, the Texas Instruments THVD1451 transceiver is a highly reliable and robust solution for industrial applications. Its ±18 kV IEC ESD protection, single supply operation, extended common-mode voltage range, small package size, and wide temperature range make it an ideal choice for rugged industrial environments.
Meets/exceeds the requirements of the TIA/EIA-485A standard
Supply voltage range: 3 V to 5.5 V
Differential output exceeds 2.1 V for PROFIBUS compatibility with 5 V supply
Extended operational common-mode range: ±15 V
Low EMI 500 kbps and 50 Mbps data rates
Large receiver hysteresis for noise rejection
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 package saves board space
Bus I/O ESD protection:
HBM: ±30 kV
Contact discharge: ±18 kV IEC 61000-4-2
Air-gap discharge: ±25 kV IEC 61000-4-2
Fast transient burst: ±4 kV IEC 61000-4-4
Low power consumption:
Standby supply current: <1 µA
Current during operation: <3 mA
Motor drives
Factory automation and controls
Grid infrastructure
Building automation
HVAC systems
Video surveillance
Process analytics
Wireless infrastructure
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