Part Number: TCA9539-Q1 Hi experts,
We are using TCA9539-Q1 for IO expansion on our custom board. The IO expansion chip is handled by linux kernel I2C driver. Currently, I am encountering an issue where changes in the input state of the IO can be detected…
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
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…
Part Number: TCA9539 Tool/software: Dears,
My customer encountered the following problem when using the TCA9539 chip. Please help me take a look: In the figure, port 1, port 2, and port 3 are the three IO ports of the 9539 extended GPIO; when port…
Part Number: TCA9539 Hi Team,
Please explain the following: The datasheet states that the absolute maximum ratings for VI and VO of the TCA9539 are -0.5V to 6V. Does the above condition mean that the device will not break even if a voltage in the range…
Part Number: TCA9539-Q1 Other Parts Discussed in Thread: TCA9539 Tool/software: Hi，team：
For the TCA9539, I have two questions I'd like to inquire about:
1、Under what circumstances would the INT (interrupt) remain consistently low? Have you encountered…
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…
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…
Part Number: TCA9539 Tool/software: My SDA and SCL line have a 3.3 volts level and my TCA9539 is powered by 1.8 volts. It works but I dont know if there is a risk od damage. The datasheet is not clear if it is aceptable or not. Can you help me? Thank…
