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DIR9001 IO consideration

na na78
Guru 16770 points

Other Parts Discussed in Thread: DIR9001

Hi

We have following considerations. Would you advise us?

1. 

DIR9001 has 5V tolerant TTL level inputs according to datasheet.

Are there any problem when Vcc=0V and these input = 5V?

2.

If voltage is applied to output side before VCC, current flows to VCC and IC is damaged? 

Best regards

  • 0
    TI__Mastermind 28120 points
    1. The 5V tolerant TTL pins should be fine in this case.

    2. If the Absolute Maximum Rating table is violated then the device could be damaged. That means if a pin that requires to be no more than its supply voltage plus a margin is violated, then it could be damaged.

    Justin