TPT7481-SOBR

Drivers, Receivers, Transceivers Overview

The TPT7481-SOBR is an isolated half-duplex RS-485/RS-422 transceiver manufactured by 3PEAK. It operates on a supply voltage of 3.0 V to 5.5 V and supports data rates up to 20 Mbps. The device features a 5-kV RMS isolation rating with typical static CMTI of ±200 kV/μs and dynamic CMTI of ±150 kV/μs. It includes hot-plug circuitry, full fail-safe receivers, and bus-pin protection rated at ±15 kV IEC 61000-4-2 contact discharge and ±20 kV air discharge. The component is housed in a WSOP16 package and functions within a temperature range of -40°C to +125°C.

Drivers, Receivers, Transceivers Feature Summary

• Provides galvanic isolation between logic and bus sides using integrated capacitors.
• Maintains three-state outputs during power-up and power-down events for safe hot-plugging.
• Ensures receiver output defaults to logic high when inputs are open, shorted, or idle.
• Supports up to 256 nodes on the network due to low bus current characteristics.

Drivers, Receivers, Transceivers Applications

• Home Appliance
• Motor Drives
• Industrial Control
• Communication Infrastructure

Drivers, Receivers, Transceivers Procurement Notes

Verify the specific ordering suffix matches the required package type and tape-and-reel quantity. Confirm that the safety certifications align with regional regulatory requirements for the target application. Ensure the design accounts for the separate VCCA and VCCB power domains and appropriate decoupling capacitors near each supply pin.

Drivers, Receivers, Transceivers Selection Notes

Select this model for applications requiring robust isolation and high-speed communication over long distances. The 20-Mbps rate suits bandwidth-intensive industrial protocols. Verify that the system ground potential differences remain within the specified common-mode limits. Consider the TPT7482 variant if full-duplex operation is necessary instead of half-duplex.

Drivers, Receivers, Transceivers Part Context

This component belongs to the TPT748x family of isolated transceivers from 3PEAK. It complements non-isolated RS-485 devices like the TP8485E by providing enhanced noise immunity and safety compliance. The family shares similar electrical characteristics but differs in isolation capabilities and package options, catering to diverse industrial networking needs.

Drivers, Receivers, Transceivers Replacement Considerations

Public confirmed substitute part numbers: None identified in verified documentation.

Drivers, Receivers, Transceivers FAQ

What is the maximum working isolation voltage?

The maximum working isolation voltage is 1000 VRMS for AC voltage and 1414 VDC.

How does the device handle bus faults?

The receiver features a full fail-safe design that ensures a logic-high output if the differential input is open, shorted, or on a terminated but undriven bus.

What ESD protection levels are provided?

The device offers ±15 kV IEC 61000-4-2 contact discharge and ±20 kV IEC 61000-4-2 air discharge protection on bus pins.