Description:

THVD1428 is a half-duplex RS-485 transceiver with integrated surge protection. Surge protection is achieved by integrating transient voltage suppressor (TVS) diodes in the standard 8-pin SOIC (D)package. This feature provides a substantial increase in reliability for better immunity to noise transients coupled to the data cable, eliminating the need for external protection components.

This device operates from a single 3.3-V or 5-V supply and features a wide common-mode voltage range which makes it suitable for multi-point
applications over long cable runs. The device is available in the industry standard SOIC package for easy drop-in without any PCB changes. The device is characterized over ambient free-air temperatures from –40°C to 125°C.

Features:

• Supports 20 Mbps
• Extended ambient temperature range: -40°C to 125°C
• Extended operational common-mode range: ± 12 V
• Receiver hysteresis for noise rejection: 30 mV
• Low power consumption
– Standby supply current: < 2 µA
– Current during operation: < 3 mA
• Glitch-free power-up/down for hot plug-in capability
• Open, short, and idle bus fail-safe
• 1/8 Unit load (Up to 256 bus nodes)
• Industry standard 8-Pin SOIC for drop-in compatibility

Applications
• Wireless infrastructure
• Building automation
• HVAC systems
• Factory automation & control
• Grid infrastructure
• Smart meters
• Process analytics
• Video surveillance

Datasheet