Texas Instruments

SN65HVD23D

SN65HVD23D Description

The SN65HVD23D from Texas Instruments is a half-duplex RS-422/RS-485 transceiver designed for robust differential communication in industrial and automotive environments. Housed in an 8-pin SOIC package, this surface-mount IC operates from a 4.5V to 5.5V supply and supports data rates up to 25Mbps, making it suitable for high-speed data transmission. Although marked as obsolete, it remains a reliable choice for legacy systems due to its 130mV receiver hysteresis, which enhances noise immunity in electrically noisy environments. The device is ROHS3 compliant and adheres to REACH and EAR99 regulations, ensuring environmental and export compliance.

SN65HVD23D Features

• High-Speed Performance: Supports 25Mbps data rates, ideal for time-sensitive applications.
• Robust Noise Immunity: 130mV receiver hysteresis minimizes signal errors in noisy conditions.
• Wide Supply Range: Operates from 4.5V to 5.5V, compatible with standard 5V systems.
• Half-Duplex Communication: Enables bidirectional data flow on a single differential pair.
• Industrial Compliance: Meets RS-422 and RS-485 standards for reliable long-distance communication.
• Environmental Durability: MSL 1 (Unlimited) moisture sensitivity ensures longevity in harsh conditions.

SN65HVD23D Applications

The SN65HVD23D excels in applications requiring noise-resistant, high-speed differential signaling, such as:

• Industrial Automation: PLCs, motor control, and factory networks.
• Telecommunications: Base stations and network infrastructure.
• Automotive Systems: CAN bus backup networks and diagnostic tools.
• Building Automation: HVAC controls and security systems.
• Legacy Upgrades: Retrofitting older RS-485 systems without redesign.

Conclusion of SN65HVD23D

While the SN65HVD23D is obsolete, its high-speed performance, noise immunity, and compliance with industrial standards make it a dependable choice for existing designs. Engineers seeking a proven RS-422/RS-485 transceiver for harsh environments or legacy upgrades will find this IC a cost-effective solution. For new designs, Texas Instruments offers modern alternatives with enhanced features, but the SN65HVD23D remains a benchmark for reliability in differential communication.