• TCA9555: TCA9555 state after startup

  

  Herbert Wang

  TI Thinks Resolved

  Part Number: TCA9555 Tool/software: Dear Expert: For TCA9555RGER, if it is pull-up state of the port in the default after startup?

  • 1 month ago
  • Interface
  • Interface forum
Answered

• TCA9555: Calculating Icc when driving LEDs

  

  Kodi

  Resolved

  Part Number: TCA9555 Other Parts Discussed in Thread: TCA9535 , Tool/software: Hi, I have a question regarding I/O Icc when using an I/O expander to drive an LED using either the TCA9555 or the TCA9535. Is there a way to calculate what the additional shoot…

  • Resolved

  • 27 days ago
  • Interface
  • Interface forum

• TCA9555: TCA9555DBR - alternate part with IO latch

  

  Kanava sait Abdul Kathar

  TI Thinks Resolved

  Part Number: TCA9555 Tool/software: It seems TCA9555DBR part doesn't have IO latch, can you pls suggest alternate with IO latch (Pin & foot print compatible with TCA9555DBR )

  • 1 month ago
  • Interface
  • Interface forum

• TCA9555: TCA9555 high quiescent current in standby mode low inputs

  

  Julie Moreau

  TI Thinks Resolved

  Part Number: TCA9555 Tool/software: Hello, From the TCA9555's datasheet, for low inputs, the quiescent current in standby mode is 1.5 mA max while it is 40 µA max for operating mode. The quiescent current is then much higher in standby mode than…

  • 5 months ago
  • Interface
  • Interface forum
Answered

• TCA9555: I2C Waveshape

  

  David Lane

  Resolved

  Part Number: TCA9555 Tool/software: I am referencing the earlier thread as this is the same application. There are a number of photos in the previous thread. I'll repeat one here. In this application the TCA9555 interfaces to Microcontroller TM4C1292NCPDTI3…

  • Resolved

  • 4 months ago
  • Interface
  • Interface forum
Answered

• TCA9555: SDA two steps

  

  Allan Fan

  Resolved

  Part Number: TCA9555 Tool/software: Hi experts, Customer used TCA9555 and saw SDA has two steps although all the timing spec seems ok and meet DS spec. Would you please clarify is there any concern or what might goes wrong? Regards, Allan

  • Resolved

  • 4 months ago
  • Interface
  • Interface forum

• TCA9555: Pull-up resistors by default?

  

  Dejan Hrovatin1

  TI Thinks Resolved

  Part Number: TCA9555 Other Parts Discussed in Thread: TCA9535 Tool/software: Hello, I just would like to ask for clarification - when the ports of TCA9555 are configured as inputs, pull-up resistors on those pins are enabled by default, am I right? So…

  • 5 months ago
  • Interface
  • Interface forum

• TCA9555: Debouncing

  

  Tyrique Townsend

  TI Thinks Resolved

  Part Number: TCA9555 Other Parts Discussed in Thread: TCA8418E Tool/software: I was notified by TI support that " TCA9555 does not have automatic debouncing built in. If debounce is needed, an external cap would be needed." - Is there a drop…

  • 6 months ago
  • Interface
  • Interface forum
Answered

• TCA9555: Button Debouncing

  

  Tyrique Townsend

  Resolved

  Part Number: TCA9555 Tool/software: Does the TCA9555 have automatic button debouncing built in? If it does, then is that true for both polled and interrupt?

  • Resolved

  • 6 months ago
  • Interface
  • Interface forum

• TCA9555: address and register issue

  

  Adam Lawrence

  Answer Suggested

  Part Number: TCA9555 Other Parts Discussed in Thread: TCA6424 Tool/software: We installed a TCA9555PWR onto the TI I/O expander EVM and are observing some strange results which we cannot understand. 1) With the TCA9555 installed on the EVM, all three…

  • 7 months ago
  • Interface
  • Interface forum

Didn't find what you are looking for? Post a new question.