TPT480L1-SO1R

Drivers, Receivers, Transceivers Overview

The TPT480L1-SO1R is a full-duplex RS-485/RS-422 transceiver from 3PEAK, operating on a single 3.0V to 5.5V supply. It supports data rates up to 32Mbps with a true 1/8 unit load, enabling networks of up to 256 nodes without repeaters. The device features robust bus-pin protection including ±20kV HBM ESD and ±12kV IEC contact discharge ratings. It incorporates hot-plug circuitry that keeps outputs in a three-state during power-up or power-down, alongside a full fail-safe receiver design. Operating temperature range spans from -40°C to +125°C.

Drivers, Receivers, Transceivers Feature Summary

• Full-duplex communication capability exceeding EIA-485 standards for balanced transmission lines
• Integrated hot-plug circuitry ensuring Tx and Rx outputs remain in a high-impedance state during power transitions
• Full fail-safe receiver design that guarantees a logic-high output when inputs are floating, shorted, or the bus is idle
• High-level electrostatic discharge protection on bus pins against human body model and IEC 61000 events

Drivers, Receivers, Transceivers Applications

• Industrial control systems requiring reliable multi-point communication
• Grid infrastructure monitoring and automation networks
• Video surveillance equipment utilizing RS-485/RS-422 protocols
• Communication infrastructure base stations and routers

Drivers, Receivers, Transceivers Procurement Notes

Verify the specific ordering suffix SO1R corresponds to the SOP-8 package configuration required for your PCB layout. Confirm that the application environment operates within the specified -40°C to +125°C temperature range. Ensure the system voltage remains between 3.0V and 5.5V to maintain electrical characteristics. Check that the 32Mbps data rate requirement aligns with the network topology constraints defined in the datasheet.

Drivers, Receivers, Transceivers Selection Notes

Select this component when full-duplex operation is necessary, distinguishing it from half-duplex variants like the TPT481. The absence of DE and /RE enable pins simplifies interface design by removing control logic overhead. Consider the SOP-8 package dimensions if board space is limited compared to larger packages. Evaluate the 32Mbps speed against lower-speed alternatives if power consumption or noise immunity is a primary concern.

Drivers, Receivers, Transceivers Part Context

This part belongs to the TPT480/TPT482 family of full-duplex transceivers manufactured by 3PEAK. While the TPT482 offers configurable enable pins and alternative packages like SOP-14 or MSOP-10, the TPT480L1-SO1R provides a fixed-function solution in an 8-pin form factor. It shares core electrical specifications with the broader series but lacks external control inputs.

Drivers, Receivers, Transceivers Replacement Considerations

Direct replacements must support full-duplex RS-485/RS-422 at 32Mbps. Verify pin compatibility as the TPT480 lacks enable pins, unlike the TPT482 which includes DE and /RE. Ensure substitute components offer comparable ESD protection levels and operate within the same voltage and temperature ranges.

Drivers, Receivers, Transceivers FAQ

Does the TPT480L1-SO1R have driver or receiver enable pins?

No, the TPT480L1-SO1R does not have DE or /RE pins. The driver and receiver are fully enabled at all times, with the differential outputs following the logic states of the D input directly.

What is the maximum number of nodes supported on the bus?

The device presents a true 1/8 unit load to the bus, allowing up to 256 transceivers to be connected on a single network without the need for repeaters.

How does the device handle hot-plugging?

The TPT480L1-SO1R includes hot-plug circuitry that ensures both the transmitter (Tx) and receiver (Rx) outputs remain in a three-state (high-impedance) condition during power-up and power-down sequences.