Isolation(29)

TPT7481

Isolated Full- and Half-Duplex RS485 Transceiver

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Overview

The TPT7481 is a ±15-kV IEC61000 ESD protected, 3.0-V ~ 5.5-V isolated RS485 transceivers that meet the RS-485 and RS-422 standards for Half Duplex communication. The TPT7482 is isolated Full Duplex RS485.

The TPT748x features a fail-safe receiver, which supports the output of the receiver to be logic high when the differential input (bus pin A/B) of the receiver is open, short, or idle.

Transmitters in this family deliver exceptional differential output voltages into the RS-485 required 54-Ω load. The 20-Mbps device has very low bus currents, so they present a true “1/8 unit load” to the RS-485 bus. This allows up to 256 transceivers on the network without using repeaters. Receiver (Rx) inputs feature a “Full Fail-Safe” design, which ensures a logic-high Rx output if Rx inputs are floating, shorted, or on a terminated but undriven bus.

The TPT748x is available in the WSOP16 package and is characterized from -40°C to +125°C.

Status

Production
Rating

Industrial
Isolation Rating (Vrms)

5000
Surge Voltage Capability (Vpk)

10000
CMTI (kV/μs) (Static)

200
CMTI (kV/μs) (Dynamic)

150
Max Data Rate (Mbps)

20
Mode

Half/Full Duplex
Package

WSOP16, WSOP8

Development Resources

Documentation

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Documentation
- Data Sheet
- Selection Guide
- Application Note
- Technical Note
- User Guide
- Test Report
- Document Name
- Type
- Language
- Date
- Datasheet_TPT7481-TPT7482
  
  Data Sheet
  
  English
  
  02/02/2024
  
  Isolated Full- and Half-Duplex RS485 Transceiver
- Introduction to Latch-up and the Preventive Measures
  
  Technical Note
  
  English
  
  01/19/2024
- Application Tips on ESD-EOS
  
  Technical Note
  
  English
  
  01/19/2024
- 3PEAK Analog Products Selection Guide
  
  Selection Guide
  
  English
  
  01/19/2024