Part Number: TCA9554 Dear,
Using TCA9544, 2V power supply, and our customer find that why the INT couldn't pull up to high level and stay 0.9V with 10Kohm pull up resistor? When changed to 1K, it is normally.
According to the source current of datasheet…
Part Number: TCA9554 Other Parts Discussed in Thread: PCA9554 , , PCA9555 Hi,
I am using TCA9554DBQR for I2C to GPIO expansion. But unable to find any reference source code.
Is there any Arduino compatible code is available for this IC?
Regards,
Preeth…
Part Number: TCA9554 Hi Sirs,
Sorry to bother you.
We know 9554 have internal 100k PU on IO, but 9534 didn't.
But we would like to know 9554 could replace 9534? or 9534 could replace 9554?
Any risk?
Thanks!!
Part Number: TCA9554 Hi,
I have used TCA9554PWR 8-bit GPIO expander in one of our projects, But the device does not detect on our I2C bus.
But on the same bus other devices get detected. The VCC supply to the IC and the voltage level of the I2C is 1.8V…
Part Number: TCA9554 Hello Team,
I can find the absolution junction temp of our TCA9554 is 125C in E2E, but our customer want to know what's the max junction temp of recommended operating conditions? not the absolution junction temp, thanks
Regards…
Part Number: TCA9554 Tool/software: Linux Hi,
I am writing linux device driver for tca9554a i2c gpio expander.
I am using i2c_smbus_read_byte_data to read data from device and i2c_smbus_write_byte_data to write data.
I am able to read the data properly…
Hi David,
We can't officially state devices won't go EoL indefinitely. I spoke with marketing and they do suggest moving to our newest version of this device (software compatible and pin to pin as well, no changes required to use) the TCA9554.…