• TCA9554A: Schematic verification

  

  Irfan Shaikh

  TI Thinks Resolved

  Part Number: TCA9554A Other Parts Discussed in Thread: TCA6424A , , PCF8574 , TCA9554 , TCA9555 , PCF8574A , PCA9554A , PCA9555 , PCA9554 , PCF8575 Dear Team, Request you to review the schematics attched for the Io expander used in my design. Also can…

  • 1 day ago
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• TCA9554A: Read Input when P0 pulled to COM

  

  Daniel Corda

  Resolved

  Part Number: TCA9554A Other Parts Discussed in Thread: TCA9544A Hello Everyone, We are using TCA9554A in a design and need to configure P0 as an input so that when it is pulled low INT changes. I have already been successful in programming TCA9554APWR…

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  • over 1 year ago
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• TCA9554A: Alternative parts that has higher operating temperature

  

  Barton Tung

  Resolved

  Part Number: TCA9554A Other Parts Discussed in Thread: TCAL9538 Hi Expert, My customer is looking for a P2P replacement of TCA9554A that has a higher operating temperature of -40 ~ 95 degree-C. Please advise. Thanks Regards, Barton

  • Resolved

  • over 2 years ago
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• TCA9554A: What's difference between TCA9554A and TCA9534A?

  

  Paul Yeh

  Resolved

  Part Number: TCA9554A Other Parts Discussed in Thread: TCA9534A Hi team, My customer would like to know what's different between TCA9554A and TCA9534A? From simple comparison table, I can't judge their difference, so please advise. Thanks

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  • over 3 years ago
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• TCA9554A: Is the Input Port Register a schmitt-trigger Inputs?

  

  R.Fukunaga

  TI Thinks Resolved

  Part Number: TCA9554A Hi all, I would like to ask you two questions. 1) Is it a schmitt-trigger Inputs like SNx4 Series of logic IC? 2) What is rise/fall time of I/O port? Is there limit value? I'm going to connect input capacitor for noise…

  • over 2 years ago
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• TCA9554A: How to configure port type on not use pins?

  

  Statham Su

  TI Thinks Resolved

  Part Number: TCA9554A Hello Sir: We have two pins will not use on our application. We want to know how to configure port type on not use pins? Please let us know your feedback. Thanks a lot.

  • over 2 years ago
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• TCA9554A: Inquiry

  

  Ray Vincent Aranzaso

  Answer Suggested

  Part Number: TCA9554A Hi, Good Day. I have a customer who is working with TCA9554ADBR. Please see below his query for your reference. Thank you very much. If I power it on with 2.5V (connect VCC to 2.5V) but my I2C bus voltage is 5V, is that operationally…

  • over 3 years ago
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• TCA9554A: TCA9554A tsp Timing fail

  

  Paul Yeh

  TI Thinks Resolved

  Part Number: TCA9554A Other Parts Discussed in Thread: BQ35100 , Hi team, My customer is doing EDVT testing in their project, they found the MCU I2C (EFR to I/O Expander ) communication timing can not meet the spec. See below pictures for details .…

  • over 5 years ago
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• PCF8574A: Is there a drop-in replacement? LIke TCA9554A?

  

  Paul Sorlie53

  Resolved

  Part Number: PCF8574A Other Parts Discussed in Thread: TCA9554A We use the subject PCF8574A I/O expander in the SOIC-16 package (DW suffix). Since they're hard to find, is there a newer more common alternate? The TCA9554A seems likely, but what is…

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  • over 3 years ago
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• TCA9554A: TCA9554A for LED application

  

  Kevin Jiang1

  Resolved

  Part Number: TCA9554A Other Parts Discussed in Thread: TCA6507 Dear sir, We'd like to utilize TCA9554A to light on LED and is blinking with a fixed period. If LED is turn on/off with 500Hz/500Hz, can we deliver once command and then TCA9554A will…

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  • over 6 years ago
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