TPT485E-SO1R

Drivers, Receivers, Transceivers Overview

The TPT485E-SO1R is a half-duplex RS-485 transceiver manufactured by 3PEAK, designed for balanced communication networks. It operates within a supply voltage range of 4.5 V to 5.5 V and supports data rates up to 500 kbps. The device accommodates up to 256 nodes on a bus due to its 1/8 unit load characteristic. Key electrical parameters include a driver differential output voltage magnitude of 2.0 V minimum into a 54 Ω load, receiver hysteresis of 60 mV, and quiescent current as low as 0.5 µA in standby mode. It features ±18-kV HBM and ±12-kV IEC contact discharge protection, with an operating temperature range from -40°C to +125°C.

Drivers, Receivers, Transceivers Feature Summary

• Low power consumption with less than 1-µA standby supply current
• Large receiver hysteresis of 60 mV for improved noise immunity
• Robust bus-pin protection against electrostatic discharge events
• Full fail-safe design ensuring logic-high output during idle or fault conditions

Drivers, Receivers, Transceivers Applications

• E-Metering Networks
• HVAC Systems
• Video Surveillance Systems
• DMX512-Networks

Drivers, Receivers, Transceivers Procurement Notes

Verify the specific ordering suffix SO1R corresponds to the SOP8 package and tape-and-reel quantity of 4000 units. Confirm that the MSL rating of 3 aligns with your assembly process requirements. Ensure the green RoHS-compliant specification meets environmental standards for your target market. Cross-reference the marking information T485E with incoming inspection protocols.

Drivers, Receivers, Transceivers Selection Notes

Select this component when a 5-V supply system requires RS-485 connectivity with high ESD tolerance. The wide receiver hysteresis makes it suitable for noisy industrial environments. Verify that the 500 kbps data rate suffices for your application, as higher-speed alternatives exist within the manufacturer's portfolio. Ensure the 4.5 V minimum supply voltage matches your system's power rail stability under all load conditions.

Drivers, Receivers, Transceivers Part Context

The TPT485E belongs to 3PEAK's RS-485 transceiver family, characterized by robust transient protection and low-power operation. It serves as a direct functional replacement for legacy devices requiring 5-V operation and standard SOP8 footprints. The series emphasizes reliability in harsh electromagnetic environments through integrated ESD protection and fail-safe receiver designs.

Drivers, Receivers, Transceivers Replacement Considerations

Check pin compatibility with existing PCB layouts if substituting other RS-485 transceivers. Verify that the 4.5 V minimum supply voltage does not conflict with systems operating at lower nominal voltages. Compare propagation delay specifications against timing-critical applications.