Answered

• TCA9554: TCA9554 - interupt pin unused

  

  brg barg

  Resolved

  Part Number: TCA9554 Other Parts Discussed in Thread: TCA9538 , TCAL9538 , TCAL6408 Tool/software: Hello, I would like to use all the TCA9554’s 8 pins as an outputs, and no need for the interrupt pin. Please advice how the interrupt pin should connected…

  • Resolved

  • 10 months ago
  • Interface
  • Interface forum
Answered

• TCA9554: TCA9554 Input Wiring

  

  sarnold

  Resolved

  Part Number: TCA9554 Other Parts Discussed in Thread: PCF8574 , , TCA9534 Tool/software: Hi everyone, I'd like to use the TCA9554 as a replacement for PCF8574 in an 8-input I2C button interface. The schematic looks as follows: I understood from…

  • Resolved

  • over 1 year ago
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• TCA9554: Power down behaviour

  

  Urban Mueller

  TI Thinks Resolved

  Part Number: TCA9554 Tool/software: Hi What happens if the TCA9554's power is removed but there are active signals (3.3V CMOS) driving the I/O pins? Are the I/O pins high impedance then or do they draw current through the I/O pins? Thanks for your…

  • 9 months ago
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• TCA9554: Question about Reset and active I2C CLK / DATA Signals

  

  Richard Bair

  Part Number: TCA9554 Other Parts Discussed in Thread: PCA9554 Tool/software: I have a system as shown above. There is a 6in harness in between the 9507s that route between two PCBs. We reset theTCA9554s with the following circuit: As part of recovery…

  • 4 months ago
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• TCA9554: TCA9554 -When device is powered up,it comes up as output high

  

  Shashank Tripathi

  TI Thinks Resolved

  Part Number: TCA9554 Tool/software: Hi Team, I am trying to use this part some automation and i am observing one issue.Pls advice As per datasheet,the channels are acting as input on power power up. I am observing that when i power up the device…

  • over 1 year ago
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• TCA9554: LEDs flash momentarily upon power-up

  

  switch

  Answer Suggested

  Part Number: TCA9554 Other Parts Discussed in Thread: TCA9534 Tool/software: Hi TI team， When using the TCA9554PWR to control LED indicators, all LEDs flash momentarily upon power-up. What is the reason for this? Below are the schematic and video.

  • 10 months ago
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• TCA9554: I2C GPIO with flash memory

  

  John B

  TI Thinks Resolved

  Part Number: TCA9554 Other Parts Discussed in Thread: TCAL6416R Tool/software: Hi, I have found this link which provides an overview of I2C GPIO. https://www.ti.com/interface/i2c/general-purpose-ios-gpios/overview.html I am looking for I2C GPIO…

  • 11 months ago
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• TCA9554: Technical issues

  

  switch

  TI Thinks Resolved

  Part Number: TCA9554 Other Parts Discussed in Thread: PCF8574 , PCA9554 Tool/software: Hi ti team， The GPIO expansion was successful, but I failed to operate this node using ADB, such as changing the output. For example, echo out > gpio504/direction…

  • over 1 year ago
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Answered

• TCA9554: marking differences between parts we receive this year and last year

  

  Hillary Lu

  Resolved

  Part Number: TCA9554 Tool/software: Please advise the reason of the marking difference s between 2 parts we received this year and last year. Does it due to different production site?

  • Resolved

  • 11 months ago
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Answered

• TCA9554: TMUX1574PWR Pd(mW) value

  

  Louis Lo

  Resolved

  Part Number: TCA9554 May I confirm TMUX1574PWR TSSOP 16P 4-CHANNEL MUX Pd(mW) value is ?

  • Resolved

  • over 3 years ago
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