Part Number: TCA9534
I read some of the posts about TCA9534 in this forum but I still have a question about if I understand the
5V tolerance of IO pins correctly.
I plan to use some TCA9534 in a 1.8V environment. All pins should be used just as outputs to setup different
devices more or less statically. 6 pins drive 1.8 V logic, but 2 pins must be connected to 3.3V and 5V devices.
I'm now not sure if I can mange that with the device. In the datasheet it stated, IO pins are 5V tolerant.
But I have doubts if it is real the case also for outputs. (regarding functional block diagram).
Would it work if the 3.3V and 5V pins are configured as outputs which output value log. LOW and
in case of log. HIGH, if the pins are configured as inputs, provided there is a pull-up to 3.3V and 5V ?
If yes, would it be a save solution ?
In reply to Bobby Nguyen:
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