TPT29545

4-channel I²C Switch with Interrupt and Reset

Data Sheet
Buy on DigiKey

Overview
Development Resources
Application
Ordering Detail

Overview

The TPT29545 is a 1:4 bidirectional translating I²C switch. The SCL/SDA upstream pair fans out to four downstream channels. Any single SCn/SDn channel or combination of channels can be selected, determined by the programmable control register.

Four interrupt inputs (INT0 - INT3), which are designed as one for each of the downstream pairs. One interrupt (INT) output acts as an AND of the four interrupt inputs.

If one of the downstream I²C buses is stuck in a low

state, then an active-low reset (RESET) input helps the TPT29545 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 TPT29545. This allows the use of different bus voltages on each pair, so that 2.5V, or 3.3V parts can communicate with 5V 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 5.5V tolerant.

TPT29545 is available in the TSSOP20 package, and is characterized from -40°C to +85°C.

Status

Production
Rating

Industrial
Drivers Per Package

1
Receivers Per Package

4
VCC (Min) (V)

2.5
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 +85
Package

TSSOP20

Development Resources

Documentation

Show Filter

Hidden Filter
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_TPT29545
  
  Data Sheet
  
  English
  
  02/02/2024
  
  4-channel I²C Switch with Interrupt and 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