Hello,
One of my customer asked about Power up/down sequence of TCA9406.
The datasheet shows(page 9) the bellow, But we don't know what VCC is.
I guess first VCC is VCCA, and second VCC is VCCB. Am I correct ?
The recommended power up sequence is:
1. Apply power to the first VCC and apply the second VCC
2. Drive the OE input high to enable the device
The recommended power down sequence is:
1. Drive OE input low to disable the device
2. Switch Off the power from either VCC and remove power from other VCC.
Thanks in advance.
Best Regards,
Asano