• PCA9554: PCA9545 digital inputs damaged caused by too long high rise times?

  

  Alois Lang1

  TI Thinks Resolved

  Part Number: PCA9554 We use a PCA9545 I2C Port Extender Chip. In our application, we use the 8 Digital I/O-lines as inputs (also programmed by software). Sometimes, we don't know when and why, one or more input's will be damaged or don't work correctly…

  • over 6 years ago
  • Interface
  • Interface forum
Answered

• PCA9534: May i know the difference between PCA9534 vs PCA9554 ?

  

  PYTsai

  Resolved

  Part Number: PCA9534 Other Parts Discussed in Thread: PCA9554 , HI May i know the difference between PCA9534 vs PCA9554 ? Thanks! PY Tsai

  • Resolved

  • over 7 years ago
  • Interface
  • Interface forum

• PCA9554 Questions

  

  Jim CHEN

  Other Parts Discussed in Thread: PCA9554 Hi Sir, We tested some of the noise in the PCA9554 clock signal(SCL) .(as Figure And these noise happens to occur shock near the VIH. I would like to ask some question~ 1. What would happen when the swing…

  • over 9 years ago
  • Interface
  • Interface forum

• PCA9554 schematic review

  

  Arthur Huang

  Other Parts Discussed in Thread: TCA9554A Hi Team, can you please help for the atttached schematic review to see if any design concerns on the customer schematic? Thanks. Regards, Arthur 9554 for SOLARBEAM.pdf

  • over 9 years ago
  • Interface
  • Interface forum

• PCA9554 I2C IO Expander in AM335x

  

  Balaji Selvam

  Other Parts Discussed in Thread: PCA9554 Hi All, We are using the PCA9554 I2C IO Expander with AM335x processor. It have 8 IO ports and 1 interrupt pin for processor. One of the IO ex-pander pin will act as interrupt from the Wifi Module. we are…

  • over 13 years ago
  • Processors
  • Processors forum

• 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
  • Interface
  • Interface forum

• TCA9535: Schematic

  

  switch

  TI Thinks Resolved

  Part Number: TCA9535 Other Parts Discussed in Thread: PCF8574 , TCA9554 , TCA9554A , TCA9555 , PCF8574A , PCA9554A , PCA9555 , PCA9554 , PCF8575 Hi ti team, Please help check if the schematic diagram of TCA9535 is correct. Thanks!

  • 1 month ago
  • Interface
  • Interface forum

• TCA9555: May I have some question regarding TCA9555?

  

  TAlex Wu

  TI Thinks Resolved

  Part Number: TCA9555 Other Parts Discussed in Thread: PCA9554 , PCA9555 , PCA9554A , TCA9535 Dear Sir: May I have some question regarding TCA9555? Regarding the TCA9555PWR, can pins P00 through P17 be configured only as Input (I) or Output ( Open…

  • 3 months ago
  • Interface
  • Interface forum

• 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
  • Interface
  • Interface forum

• TCA9535: Schematic review

  

  Zoey Wu

  TI Thinks Resolved

  Part Number: TCA9535 Other Parts Discussed in Thread: PCF8574 , TCA9554 , TCA9554A , TCA9555 , PCF8574A , PCA9554A , PCA9555 , PCA9554 , PCF8575 Tool/software: hi team could u kindly help to review the schematic? thanks!

  • 5 months ago
  • Interface
  • Interface forum

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