TCA6416A: TCA6416A IIC configuration to GPIO output time

Xiaoxiang Liu

Expert 8555 points

Part Number: TCA6416A
Other Parts Discussed in Thread: TCA6416

Hi team,

Our customer is using the TCA6416 for their project.

And we have some questions:

1. Could you help to confirm how long it takes for the chip from I2C driver configuration finish to actual port output?

This will assist the customer in evaluating the system design& sequence.

2. Could the EN of other chips use the output of ?

Thanks

Xiaoxiang

over 2 years ago

0 Clemens Ladisch over 2 years ago

Guru 322000 points

1. This is specified as t_PV. Please note that it is shorter than an I²C clock pulse.

2. The outputs output standard logic signals and can be used for the EN inputs of other chips.

0 BOBBY over 2 years ago

TI__Guru* 79271 points

Hi Xiaoxiang,

As Clemen's has pointed out, the outputs will change during the ACK bit when data is written to a register. As long as the input of other chips accepts the VoH/VoL generated by our device's output pins, it can be used to control enable inputs.

Please let us know if you have any further questions

-Bobby

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TCA6416A: TCA6416A IIC configuration to GPIO output time