Part Number: TCA9554 Other Parts Discussed in Thread: PCA9554 Hi,
Can you confirm that TCA9554 is a drop-in replacement for the NXP PCA9554PW.
The datasheet do suggest some improvements on the TCA side.
What is the life expectancy for the TCA9554…
Part Number: TCA9554 Hi,
To be clear. As per default all I/O pins are configured as inputs. When I would write to 0x01 (configuring the logic levels for outputs) and only after that, writing to 0x03 which of the ports should be configured as outputs…
Part Number: TCA9554 Other Parts Discussed in Thread: TCA9538 , TCAL9538 , TCAL6408 Tool/software: Hello,
I would like to use all the TCA9554’s 8 pins as an outputs, and no need for the interrupt pin.
Please advice how the interrupt pin should connected…
Part Number: TCA9554 Other Parts Discussed in Thread: PCF8574 , , TCA9534 Tool/software: Hi everyone,
I'd like to use the TCA9554 as a replacement for PCF8574 in an 8-input I2C button interface. The schematic looks as follows:
I understood from…
Part Number: TCA9554 Tool/software: Hi
What happens if the TCA9554's power is removed but there are active signals (3.3V CMOS) driving the I/O pins? Are the I/O pins high impedance then or do they draw current through the I/O pins?
Thanks for your…
Part Number: TCA9554 Other Parts Discussed in Thread: PCA9554 Tool/software:
I have a system as shown above. There is a 6in harness in between the 9507s that route between two PCBs. We reset theTCA9554s with the following circuit:
As part of recovery…
Part Number: TCA9554 Tool/software: Hi Team,
I am trying to use this part some automation and i am observing one issue.Pls advice
As per datasheet,the channels are acting as input on power power up.
I am observing that when i power up the device…
Part Number: TCA9554 Other Parts Discussed in Thread: TCA9534 Tool/software: Hi TI team，
When using the TCA9554PWR to control LED indicators, all LEDs flash momentarily upon power-up. What is the reason for this? Below are the schematic and video.
Part Number: TCA9554 Other Parts Discussed in Thread: TCAL6416R Tool/software: Hi,
I have found this link which provides an overview of I2C GPIO.
https://www.ti.com/interface/i2c/general-purpose-ios-gpios/overview.html
I am looking for I2C GPIO…
Part Number: TCA9554 Other Parts Discussed in Thread: PCF8574 , PCA9554 Tool/software: Hi ti team，
The GPIO expansion was successful, but I failed to operate this node using ADB, such as changing the output. For example, echo out > gpio504/direction…
