Answered

• TCA9535: If we not use the extra GPIO then?

  

  Yash Dave

  Resolved

  Part Number: TCA9535 We are using the TCA9535RTWR IC in our product. I have attached the image for your reference. As shown in the figure, ports P15, P16, and P17 are tied to GND with 100k pull-down resistors. Can we remove the pull-down resistors…

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  • 2 months ago
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Answered

• TCA9535: ticf & tocf timing

  

  Yang Wu

  Resolved

  Part Number: TCA9535 Tool/software: Hi Team, The datasheet requires ticf & tocf as below. based on VCC = 3.3V, the min ticf and tocf is ~12ns. While the real test in my customer board is 3ns. is there any risk? if yes, how to remove this risk? …

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  • 9 months ago
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• 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!

  • 7 months ago
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• TCA9535: internal pull up resistor during POR

  

  Richard Yang1

  TI Thinks Resolved

  Part Number: TCA9535 Other Parts Discussed in Thread: TCA9555 , Tool/software: Hi Team, Question from Nvidia, TCA9555 is pulled up by internal resistor during POR. Can you confirm the internal pull up resistor during POR (inside IC)? Thanks!

  • 8 months ago
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Answered

• TCA9535: INT pull-up voltage

  

  Anton Ivanovsky

  Resolved

  Part Number: TCA9535 Other Parts Discussed in Thread: TCA9539-Q1 Tool/software: Hi Team I'm pretty sure the answer is yes but was hoping to get confirmation. Can I pull-up the INT output to +3V3 while the remainder of the IC operates from +5V? Also…

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  • 9 months ago
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• TCA9535: Looking for I²C Portexpander

  

  Wouter Kragt

  TI Thinks Resolved

  Part Number: TCA9535 Tool/software: Hi Team, I am looking for a I²C Portexpander with the following requirements: 3.3V Supply In total we need 16 Outputs and 4 Inputs (at the moment I would use two TCA9535) High output current would be beneficial…

  • over 1 year ago
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• TCA9535: Will it be succeeded by a TCAL9535?

  

  devlaam

  Resolved

  Part Number: TCA9535 Other Parts Discussed in Thread: TCA9539 , , TCAL9539 , TCAL6416 Tool/software: Some GPOI devices have newer superior successors, for example the TCA9539 now has a 1MHz lower voltage TCA L 9539 counterpart, which also has more nice…

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  • 11 months ago
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• TCA9535: H/L Threshold

  

  Jeff YANG

  TI Thinks Resolved

  Part Number: TCA9535 Tool/software: Hi, Problem Description: We are using TI Expander (TCA9535) in our production line, with a VCC of 1.8V. Due to a new project design with weaker Pull down driving, we found that after voltage division with the expander…

  • over 1 year ago
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• TCA9535: VCC not set error during flash process — I/O Expander User Guide (Chapter 5.3, Step 8 & 9)

  

  shahajahan m

  TI Thinks Resolved

  Part Number: TCA9535 Other Parts Discussed in Thread: IO-EXPANDER-EVM Hello TI Team, I am referring to the I/O Expander User Guide , specifically Chapter 5.3 (Flashing procedure), points 8 and 9 , which describe the steps for flashing. During this…

  • 5 months ago
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Answered

• TCA9535: Calculations on using the TCA9535 pull-up resistor

  

  SHENG YANG

  Resolved

  Part Number: TCA9535 HI.experts The project is planned to be designed using the TCA9535 and is expected to use 8 TCA9535s.I read the technical manual (SLVA689).There are some questions in the documentation, please help with them. 1、How is the value…

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  • over 2 years ago
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