Part Number: TCA9539-Q1 dear
TCA9539-Q1 VCC=3.3V and SDA SCL pull up to5v as the mcu work at 5v power sullpy,and TCA9539-Q1 DS shoews I/O port voltage can work 5v, is it corr ect?thanks
Part Number: TCA9539-Q1 Hello team,
My customer has design question about reset pin.
We only see the min tw is 6ns, but there is no spec about the rising edge of RESET.
1. What is the recommend pull-up resistance of RESET pin?
2. And what is the recommended…
Part Number: TCA9539-Q1 Hi Team,
The datasheet mentioned that I/O pins are configured as Input at power on but it does not specify how to configure them as output.
can you guide me how to configure these pins as output? what do I have to change/write…
Part Number: PCA9539 Hi TI Expert
The datasheet declare "If the I/O is configured as an output....low-impedance paths between the I/O pin and either VCC or GND.". The impedance of IO will be? Due to all I/O will be input hi-z state, we need to reserve…
Part Number: TCA9539-Q1 Hi TI expert,
May I know the VOL value of TCA9539-Q1?
Since it is a push-pull structure I assume that the VOL of Px port should be 0V, am I right?
I notice below figure shows the VOL variation based on sink current, I believe…
Part Number: TCA9539-Q1 Hello team,
Can you explain more description about the following sentence in the datasheet of TCA9539-Q1?
(1) For voltages applied above VCC, an increase in ICC results.
When using VCC=1.8V and INT pull-up to 3.3V, how much…
Part Number: TCA9539-Q1 Hello Teams,
There are some questions for TCA9539QPWRQ1 , please help me to confirm:
1. What is the voltage of VOH if the voltage of VCC is 3.3V?
2. In the datasheet, when VCC is 3V, VOH is 2.6V @8mA; when VCC is 2.3V, VOH is 1…
Part Number: TCA9539-Q1 Other Parts Discussed in Thread: TCA9539 hi experts
as we know that TCA9539-Q1 is Auto grade with 16 channels.
do we have more channels IC for Auto application or plan for it?
Part Number: TCA9539-Q1 Hi Expert,
Assuming TCA9539-Q1 is just powered on and the I2C is not established yet, all I/O is default as input. If there is rising or falling edge on the port, will TCA9539-Q1 generate low signal on INT pin? Thanks
BR,
Elec…