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Part Number: TCA6424A Tool/software: ◆Question
If SDA is an output, please tell me the standard values (electrical characteristics) of VOH and VOL.
※ It seems that this is not stated in the TCA6424A data sheet.
Best regards
Part Number: TCA6424A Tool/software: ◆Question
Is it okay to use this circuit for unused ports? (Does it need to be connected to VCCI or GND?)
In Table 5-1. Pin Functions, it is set as an input at power up.
Best regards
Hi JDJ,
We do not spec the device ICC when all outputs are output LOW and not loaded. So the rough estimate for both devices is in the 10's of uA per device. The TCA6424A would generally consume more current, but it would still be in the uA range.…
Part Number: TCA6424A Tool/software: We believe that if an "active-low reset" is input from the /RESET pin when the power is turned on,
the reset state will be maintained and the POR will not be activated.
Is this idea correct?
See below.
…
Part Number: TCA6424A Tool/software: Hi,
what state should the unsed pin be? is it ok to keep them floating or will it cause false INT? optimal state to save power.
Thanks.
Part Number: TCA6424A Other Parts Discussed in Thread: AM625-Q1 , TPIC2810 Tool/software: Greetings TI Community,
In our custom AM625-Q1 based board design we have connected two TCA6424ARGJR I/O Expanders onto the same I2C bus. As the SoC is operating…
Part Number: TCA6424A Other Parts Discussed in Thread: TCA6424 Tool/software: Hello,
I am using the TCA6424A in the design.all ports are configured as inputs and the host is successfully able to detect the state change on each port. However, the INT…
Part Number: TCA6424A Tool/software:
If VCCP is 5V, but we accidentally used 3.3V for the VIH input voltage ( ADDR pin ), would this cause any issues during operation? Based on the datasheet, the recommended VIH min voltage would be 3.5V. Currently, the…
Part Number: TCA6424A Hi TI Team,
In my design we are using TCA6424A I/O Expander 24 I2C connected to MCU(STM32F779B), we are not able to read proper input value from external pull up individual port pins, please suggest reference code for reading correct…
