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

  • 3 months 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…

  • 7 months 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 2 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 2 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 5 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 3 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 4 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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Answered

• PCA9557: communication time out

  

  Kazuki Kuramochi

  Resolved

  Part Number: PCA9557 Hello expert, I have question for PCA9557's behavior regarding SMBus communication time out. My customer observed that PCA9557 hasn't happened time out even if adding more than 25ms wait between Reg addr and write data. I think SMBus…

  • Resolved

  • over 5 years ago
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Answered

• PCA9557: about thermal resistance, Rjt, Rjc and Rjb

  

  Joyce Li

  Resolved

  Part Number: PCA9557 Hi dear experts, Would you please provide PCA9557 Rjt, Rjc and Rjb information to me? Datasheet only lists Rja. Plus, what is the max Junction temp of PCA9557. Thanks very much for your reply in advance. BR, Joyce Li

  • Resolved

  • over 4 years ago
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