SLVAFL2 July   2024 TCA6416A , TCA9555

 

  1.   1
  2.   Abstract
  3.   Trademarks
  4. 1Introduction
  5. 2How to Configure Push-Pull IOs for Open Drain
  6. 3What Differences are There Between the Dedicated Open Drain IO Expanders and This Method?
  7. 4Summary
  8. 5References

1 Introduction

A common question that comes up about TI’s I2C IO expanders is whether or not the portfolio includes open drain output IO expanders. While TI does have IO expanders that include open drain configuration (TCAL series and PCF8575C), in reality all of TI’s push-pull IO expanders have the capability to operate as open drain.