• PCA9557: Land pattern for 16-pin SOIC

  

  Robert Saccomanno

  TI Thinks Resolved

  Part Number: PCA9557 I cannot find the recommended land pattern for PCA9557DR, a 16-pin SOIC. I see the package dimensions, but not the land pattern. Please provide.

  • 1 month ago
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• PCA9557: open or GND to Thermal Pad of VQFN (4x4)

  

  luisa keel

  TI Thinks Resolved

  Part Number: PCA9557 Hello, I can’t find any information about the connection of the thermal pad. Could you please provide me with some details? Is the pad supposed to be left unconnected, or can it be tied to GND or any other signal? Thank you.

  • 2 months ago
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Answered

• PCA9557: I2C clock frequency.

  

  Kengo.Y

  Resolved

  Part Number: PCA9557 Tool/software: Hi team, Is that true that SPEC is minimum? I believe that it is maximum. BR, Kengo.

  • Resolved

  • over 1 year ago
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• PCA9557: All push-pull ports option

  

  Marco Rojas

  TI Thinks Resolved

  Part Number: PCA9557 Other Parts Discussed in Thread: TCA6408A , TCA9538 Tool/software: Hi team, I have a customer with the below inquiry, let me know your thoughts and thanks in advance! "Quick question for you, is there a direct push-pull option…

  • over 1 year ago
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• Unexpect output state of PCA9557

  

  Evan Wu

  Other Parts Discussed in Thread: PCA9557 Hi all, We encountered an unexpected behavior with PCA9557. An I2C write command was issued by our controller followed by an I2C Write/Read command to do the validation. Sometimes, we got a validation failure…

  • over 3 years ago
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Answered

• PCA9557: How can the device work in standby mode?

  

  Sean Song

  Resolved

  Part Number: PCA9557 Hi expert, Our customer want to use our PCA9557. They want to know how can the device work in standby mode? Do they need to set it up, or will the device automatically enter standby mode when I2C idea? Thanks Best Regards…

  • Resolved

  • over 3 years ago
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• PCA9557: IBIS model for PCA9557

  

  Antony Fu

  TI Thinks Resolved

  Part Number: PCA9557 Other Parts Discussed in Thread: TCA9538 Hello, Customer is asking whether we have IBIS model about PCA9557, so would you like to help us check whether we have it? Thanks, Antony

  • over 6 years ago
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Answered

• PCA9557: Is there any difference between the PCA9557RGVR & PCA9557RGYR?

  

  Kygo Cheng

  Resolved

  Part Number: PCA9557 Hi Team There is a good new that we DIN PCA9557 But cause PCA9557RGVR is out of stock, could you share the difference between PCA9557RGVR & PCA9557RGYR ? THX

  • Resolved

  • over 4 years ago
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• PCA9557: Spice model for running simulation in virtuoso

  

  Avi Singhal1

  Part Number: PCA9557 Hi, I need the spice model(.CIR file) for PCA9557PWR The one which is available on ti.com is the encrypted model. I need the unencrypted one, as i want to create a symbol for this component and then use it in a test bench.

  • over 5 years ago
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• PCA9557: Is there any limitation on the voltage that can be connected to pull up of open drain pin I/O0 (P0)?

  

  Kiran Kumar Kalsani

  Answer Suggested

  Part Number: PCA9557 We are using PCA9557 and want to pull up the I/O0/P0 to 1.8V. The device is powered by 3.3V in our board. I want to confirm if there is any limitation on the P0 (which is specifically open drain pin) pull up voltage since the pin…

  • over 3 years ago
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