Texas Instruments

SN65ALS1176D

SN65ALS1176D Description

The SN65ALS1176D from Texas Instruments is a high-performance half-duplex transceiver designed for RS-422 and RS-485 communication protocols. Housed in an 8-pin SOIC package, this surface-mount IC integrates one driver and one receiver, supporting data rates up to 35 Mbps (35Mbd). Operating within a 4.75V to 5.25V supply range, it ensures robust signal integrity in industrial and commercial applications. The device features 60 mV of receiver hysteresis, enhancing noise immunity in electrically noisy environments. Although marked as obsolete, it remains a reliable choice for legacy systems due to its ROHS3 compliance and REACH-unaffected status.

SN65ALS1176D Features

• Protocol Support: Compatible with RS-422 and RS-485 standards.
• High-Speed Operation: Achieves 35 Mbps data rates, ideal for fast data transmission.
• Noise Immunity: 60 mV receiver hysteresis minimizes signal errors in noisy conditions.
• Wide Voltage Range: Operates at 4.75V–5.25V, accommodating standard 5V systems.
• Robust Packaging: 8-pin SOIC surface-mount design for compact PCB integration.
• Compliance: ROHS3 compliant and REACH unaffected, meeting environmental standards.
• Half-Duplex Design: Enables bidirectional communication on a single pair of wires.

SN65ALS1176D Applications

The SN65ALS1176D excels in applications requiring high-speed, noise-resistant serial communication:

• Industrial Automation: Used in PLC systems, motor control, and sensor networks for reliable data transfer.
• Telecommunications: Supports modems, routers, and base stations requiring RS-485/422 interfaces.
• Legacy Systems: Ideal for retrofitting older equipment due to its proven performance.
• Building Automation: Deployed in HVAC controls, lighting systems, and security networks.
• Medical Devices: Ensures stable communication in diagnostic and monitoring equipment.

Conclusion of SN65ALS1176D

The SN65ALS1176D is a versatile, high-speed transceiver tailored for RS-422/485 networks, offering superior noise immunity and efficient half-duplex communication. While obsolete, its 35 Mbps capability, robust hysteresis, and compliance make it a dependable choice for industrial, telecom, and legacy applications. Engineers seeking a compact, high-performance solution for noisy environments will find this IC well-suited to their needs.