RS-422 Interface IC Quad Diff Line

AM26LS33ACD – Quad Differential Line Receiver IC – Texas Instruments

Optimize signal integrity in demanding communication systems with the AM26LS33ACD quad differential line receiver from Texas Instruments. This high-reliability IC provides robust noise immunity for industrial and embedded designs, featuring a compact 16-SOIC package and wide operating voltage range. PCX ensures genuine Texas Instruments components with rapid shipping and dedicated technical support.

Key Features

• Type: Quad Differential Line Receiver (0 Drivers / 4 Receivers)
• Voltage Supply: 4.75V to 5.25V (5V TTL-Compatible)
• Noise Immunity: 50mV Receiver Hysteresis
• Operating Temperature: 0°C to 70°C (Commercial Grade)
• Mounting: Surface Mount (16-SOIC Package)
• Base Part: AM26LS33 Series

Technical Details

This obsolete-status IC organizes four independent differential receivers in a space-saving 16-SOIC package (3.90mm width). It interfaces with RS-422, RS-423, and similar balanced transmission lines, converting differential signals to TTL logic levels. The 50mV built-in hysteresis prevents output oscillation in noisy environments, while the 5V±5% supply range ensures compatibility with standard industrial power systems. Device package: 16-SOIC.

Common Applications

• Industrial automation control systems
• Motor drives and servo controllers
• Data acquisition modules
• Telecommunications infrastructure
• Legacy test equipment interfaces

About Texas Instruments

Texas Instruments (TI) is a globally recognized leader in semiconductor innovation, with over 90 years of engineering excellence. Their interface ICs set industry benchmarks for signal integrity and reliability, particularly in industrial and communication markets.

TI’s rigorous quality control and extensive validation processes ensure components meet stringent performance requirements. As an authorized supplier, PCX guarantees authentic TI products with full traceability and compliance documentation.

About Differential Line Receivers

Differential line receivers are critical for noise-resistant data transmission in electrically noisy environments. By comparing voltages between two complementary signal lines, they reject common-mode interference and enable reliable long-distance communication.

These ICs form the backbone of industrial networks, motor control systems, and legacy communication interfaces. Selecting receivers with hysteresis—like the AM26LS33ACD—is essential for maintaining signal integrity in applications with fluctuating voltages or EMI challenges.

Packaging

Available in protective Tube packaging for secure handling during assembly. Contact PCX for bulk or reel options.

FAQs

Q: Is the AM26LS33ACD still suitable for new designs?
A: While marked obsolete, it remains ideal for legacy system repairs or designs requiring proven compatibility. PCX maintains stock for such applications.

Q: What replaces the AM26LS33ACD in modern designs?
A: TI recommends newer receivers like the AM26C32 series for enhanced performance. PCX can assist with cross-references and equivalents.

Q: Does the 50mV hysteresis prevent signal jitter?
A: Yes. The hysteresis creates a noise margin that stabilizes outputs during slow signal transitions or voltage fluctuations.

Q: Can this IC interface with RS-485 systems?
A: It supports RS-422/423 standards. For RS-485, verify voltage thresholds with our engineers using the datasheet.

Q: Is the 0°C–70°C range sufficient for automotive use?
A: No. This commercial-grade IC requires industrial or automotive-rated alternatives for extended temperature environments.

Q: How does PCX verify authenticity for obsolete components?
A: We source exclusively through manufacturer-authorized channels and perform batch testing. All TI ICs include origin documentation.

⚠️ Note: Product images are representational. Confirm specs via datasheet.

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