TPT29548T

8-Channel I²C Switch with Reset

Data Sheet
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Overview
Development Resources
Application
Ordering Detail

Overview

The TPT29548T is a 1:8 bidirectional translating I²C switch, and Q100 qualified. The SCL/SDA upstream pair fans out to eight downstream channels. Any single SCn/SDn channel or combination of channels can be selected, determined by the programmable control register.

If one of the downstream I²C buses is stuck in a low state, then an active-low reset (RESET) input helps the TPT29548T to recover. Pulling RESET low resets the I²C state machine and causes all the channels to be deselected, as does the internal power-on reset function.

The pass gates of the switches are constructed such that the VCC terminal can be used to limit the maximum high voltage, which will be passed by the TPT29548T. This allows the use of different bus voltages on each pair, so that 2.5-V, or 3.3-V parts can communicate with 5-V parts, without any additional protection. External pull-up resistors pull the bus up to the desired voltage level for each channel. All I/O terminals are 5.5 V tolerant.

TPT29548T is available in the QFN24L package and is characterized from −40°C to +125°C.

Status

Production
Rating

Industrial
Drivers Per Package

1
Receivers Per Package

8
VCC (Min) (V)

2.3
VCC (Max) (V)

5.5
Data Rate (Max) (kBPS)

400
ICC (Max) (mA)

0.03
ESD HBM (kV)

3.5
IEC-61000-4-2 Contact (kV)

/
Operating Temperature Range (℃)

-40 to +125
Package

QFN4X4-24

Development Resources

Documentation

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Documentation
- Data Sheet
- Selection Guide
- Application Note
- Technical Note
- Technical Reference Manual
- Product Brief
- Solution Reference Manual
- User Guide
- Quick Start Guide
- Errata
- Test Report
- Document Name
- Type
- Language
- Date
- Datasheet_TPT29548T
  
  Data Sheet
  
  English
  
  05/22/2024
  
  8-Channel I²C Switch with Reset
- 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