• TCA9539-Q1: TCA9539-Q1

  

  snehal

  TI Thinks Resolved

  Part Number: TCA9539-Q1 Tool/software: Hello TI Team, TCA9539-Q1 with this IO expander, can i use output pins as analog I/O or I can use them as digital I/O only? Regards, Snehal

  • 2 months ago
  • Interface
  • Interface forum

• TCA9539-Q1: TCA9539 I2C DATA is pulled low

  

  xiwen Yan

  Part Number: TCA9539-Q1 Other Parts Discussed in Thread: TCA9539 , Tool/software: Our MCU has two TCA9539s connected to one I2C bus. 500us after operating the one with address 0x74, the I2C DATA line is pulled low probabilistically. The I2C bus recovers…

  • 4 months ago
  • Interface
  • Interface forum

• TCA9539-Q1: P2P Replacement

  

  Xiaowei Zhang

  TI Thinks Resolved

  Part Number: TCA9539-Q1 Other Parts Discussed in Thread: TCAL9539-Q1 , TCA9539A-Q1 Hi team, My customer asked: 1.Are TCA9539QPWRQ1 and TCA9539AQPWRQ1 Pin to Pin and software competiale? 2. Does TCAL9539-Q1 has Pin to Pin OPN to replace TCA9539QPWRQ1…

  • 1 month ago
  • Interface
  • Interface forum
Answered

• TCA9539-Q1: IBIS模型申请

  

  liang zhang

  Resolved

  Part Number: TCA9539-Q1 Other Parts Discussed in Thread: TCA9539 Tool/software: 您好， 请帮忙发送一下IBIS模型。

  • Resolved

  • 1 month ago
  • Interface
  • Interface forum

• TCA9539-Q1: TCA9539 output default output state

  

  Scarlett Cao

  TI Thinks Resolved

  Part Number: TCA9539-Q1 Tool/software: Hi team, Customer is using TCA9539-Q1 for output channel expansion. they want to know when TCA9539-Q1 1) nreset pin low and 2) first power up, what the default output state, pull high or low? Thanks Scarle…

  • 11 months ago
  • Interface
  • Interface forum
Answered

• TCA9539-Q1: About interrupt lost

  

  Leo Ma

  Resolved

  Part Number: TCA9539-Q1 Other Parts Discussed in Thread: TCA8418E Tool/software: Hi Expert, Have a nice day! I have question about TCA9539-Q1 need your professional support: About “ Interrupts that occur during the ACK clock pulse can be…

  • Resolved

  • 3 months ago
  • Interface
  • Interface forum
Answered

• TCA9539-Q1: question about IC power supply

  

  Jay wang

  Resolved

  Part Number: TCA9539-Q1 Tool/software: hi expert i am using auto grade IC. i want to double check with you whether this auto grade IC is suitable for 5V system?

  • Resolved

  • 2 months ago
  • Interface
  • Interface forum
Answered

• RE: TCA9539-Q1: TCA9539-Q1：Interrupt behavior

  

  Tyler Townsend

  Resolved

  Heater, Say the original state of your input is HIGH (logic 1). If that pin is changed to an output, the output will continue to operate without causing an interrupt on /INT. If you change that pin from an output to and input, and the input logic…

  • 10 months ago
  • Interface
  • Interface forum

• TCA9539-Q1: Why is the voltage difference 1.2V?

  

  Leo Ma

  TI Thinks Resolved

  Part Number: TCA9539-Q1 Tool/software: Hi Expert, Have a nice day! I have question about TCA9539-Q1 need your professional support: “When the LED is off, the I/O VIN is about 1.2 V less than VCC”. Why is the voltage difference 1.2V? Why ICC…

  • 3 months ago
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  • Interface forum

• TCA9539-Q1: PWM drive compatible of TCA9539-Q1

  

  Natsuki Hayasaka

  TI Thinks Resolved

  Part Number: TCA9539-Q1 Other Parts Discussed in Thread: TCA9539 , LP5861 Tool/software: Hi Team I'd like to ask you some questions about the I/O expander IC TCA9539. Are each of these I/O ports compatible with PWM drive? If not, do you have…

  • over 1 year ago
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  • Interface forum

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