AZRS3078

Drivers, Receivers, Transceivers Overview

The AZRS3078 is a half-duplex RS-485 transceiver IC manufactured by Amazing Micro. It operates on a single 3.3V power supply and supports data rates up to 16 Mbps. The device integrates transient voltage suppressors, providing ±15 kV IEC 61000-4-2 contact discharge protection and ±18 kV air-gap protection on bus terminals A and B. It features true fail-safe receiver functionality, ensuring a logic high output when inputs are open, shorted, or idle. Hot-swap glitch-free protection maintains outputs in a high impedance state during power-up. The receiver input impedance is 96 kΩ (1/8 unit load), allowing up to 256 devices on the bus. Operating temperature range is -40°C to +85°C.

Drivers, Receivers, Transceivers Feature Summary

• Integrated ESD protection for all pins including ±15kV HBM and ±15kV IEC contact discharge on bus terminals
• True fail-safe receiver design guarantees logic high output under abnormal bus conditions
• Hot-swap glitch-free protection prevents short current events during power-up
• Thermal shutdown and current limiting protect the transmitter from system faults

Drivers, Receivers, Transceivers Applications

• Telecommunications equipment
• Security systems
• Building automation networks

Drivers, Receivers, Transceivers Procurement Notes

Verify component authenticity through authorized distributors or direct manufacturer channels. Confirm package type matches SOP-8 requirements. Check date codes and marking codes against ordering information. Ensure environmental compliance with RoHS standards if required. Validate supply voltage compatibility with 3.3V systems before integration.

Drivers, Receivers, Transceivers Selection Notes

Select this component for applications requiring robust ESD protection without external TVS diodes. Suitable for long bus lines due to 1/8 unit load capability. Ideal for environments prone to hot-swapping or power fluctuations. Verify interface compatibility with TTL logic levels. Consider thermal management for high-density PCB layouts.

Drivers, Receivers, Transceivers Part Context

The AZRS3078 belongs to the AZRS series of RS-485 transceivers from Amazing Micro. It complements other industrial communication components by offering integrated protection features. Designed for reliability in harsh electrical environments, it aligns with EIA/TIA-485 standards. The series focuses on reducing bill-of-materials costs by eliminating external protection components.

Drivers, Receivers, Transceivers Replacement Considerations

Direct substitutes may include other 3.3V RS-485 transceivers with similar ESD ratings and fail-safe features. Verify pinout compatibility and functional equivalence before replacement. Check datasheets for matching data rates and operating temperature ranges. Ensure packaging dimensions fit existing footprints.