Answered

• TCA9545A: I2C pullup resistors on output channels

  

  Joe57656

  Resolved

  Part Number: TCA9545A Hi, We are using a TCA9545A as an I2C switch. We are not using the voltage translation feature, all I2C channels use the same 3.3V supply. From the data sheet it looks like additional pullup resistors are still needed on all the…

  • Resolved

  • 5 months ago
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• TCA9545A: max junction temperature Tjmax

  

  Naizeng Wang

  TI Thinks Resolved

  Part Number: TCA9545A Tool/software: Hi team, What's the max junction temperature Tjmax of TCA9545APWR? No such info in datasheet.

  • over 1 year ago
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Answered

• TCA9545A: No output at SC3/SD3

  

  Anthony Ting

  Resolved

  Part Number: TCA9545A Other Parts Discussed in Thread: PCA9545A Hi Team, My cusomter face a problem that SC3/SD3 have no output. Actually, our part TCA9545APWR is P2P to another part PCA9545A(NXP). They will not face this probelm when using PCA9545A…

  • Resolved

  • over 2 years ago
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• TCA9545A: Question of TCA9545A

  

  Jimmy Lai

  TI Thinks Resolved

  Part Number: TCA9545A Dear Team, When using the TCA9545A as a level shifter at the same time, if the signal input criterion conflicts with 0.7VCC, how to understand the relationship between Vdpum and Vdpux? Can the former be smaller than the latter…

  • over 3 years ago
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Answered

• TCA9545A: About i2c timing issue for tvdL(Data)

  

  GW

  Resolved

  Part Number: TCA9545A Hi, Team Our customer use TCA9545A and have a i2c timing issue and needs TI to clarify: From the official i2c spec page 44( https://www.nxp.com/docs/en/user-guide/UM10204.pdf ), the tVD;DAT is 3.45uS for Standard mode, and 0…

  • Resolved

  • over 2 years ago
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Answered

• TCA9545A: I2C transactions when TCA9545A is not powered

  

  Jordan Smith

  Resolved

  Part Number: TCA9545A Other Parts Discussed in Thread: TCA4311A Hi We are using the TCA9545A in the following configuration (see image below), with the TCA9545A and master I2C controller powered from VCC_1, and a device on an output port powered from…

  • Resolved

  • over 4 years ago
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• TCA9545A: Question on the IBIS model

  

  Xiaoying Lu

  TI Thinks Resolved

  Part Number: TCA9545A Other Parts Discussed in Thread: PCA9306 Hi team, Pls help on the question from my customer, I download IBIS model of TCA9545A from TI website, and I’m a little confused about it. In datasheet, there is switch on-state resistance…

  • over 2 years ago
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• TCA9545A: debug TCA9545A based on RK3399

  

  qiang fu

  Answer Suggested

  Part Number: TCA9545A Now we are debugging TCA9545A based on RK3399. At present, we only know how to open the access I2C, but we do not know how to work and whether a driver is needed. If necessary, could you help to provide Linux driver and configuration…

  • over 4 years ago
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• TCA9545A: I2C interface selection

  

  Anna

  TI Thinks Resolved

  Part Number: TCA9545A Other Parts Discussed in Thread: TCA9546A , , SN74LV4052A Hi Dear, We have an audio customer who wants to find an I2C interface solution. The specific requirement is that there are multiple chips with the same I2C address on a…

  • over 3 years ago
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Answered

• TCA9545A: TCA9545A has below POR requirements issue

  

  Johnney Chang

  Resolved

  Part Number: TCA9545A Other Parts Discussed in Thread: PCA9545A , Dear Sir: TCA9545A has below POR requirements but PCA9545A doesn’t. Why the TCA9545A need POR requirements? How to verify the POR requirements by pins signal?

  • Resolved

  • over 5 years ago
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