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Hello,
can I connect address pins (A0, A1, A2) of TCA9535 directly to Vcc?
If I reference to Table 5-1 of datasheet I would say that a direct connection is needed:
But then in the Typical Application Image, A2 pin has a 10k pull-up to Vcc:
Is it ok to connect A0, A1, A2 directly to Vcc or should I use a pull-up resistor instead?
Best regards.
Hi Nicola,
Connecting the address pins directly to VCC or GND is fine. Using pull-ups are also fine as long as they are not very large values. 0ohm to 10kohm pull-up or pull-down resistors are ok.
Regards,
Tyler