DAC38RF83: CMOS input current

vic zap

Part Number: DAC38RF83

Hi!

I'm designing with DAC38RF83. In the datasheet in the electrical characteristics (p.17) it's stated that the input current on CMOS digital inputs can be in the range from -40 to 40 uA.

At the same time on fig.70 (p. 72) it's seen that these inputs have 10kOhm pull-ups/downs and, consequently, should have the input current no less then 1.8V / 10kOhm = 180uA.

So, what is the truth?

Regards, Victor.

over 7 years ago

0 dBrock over 7 years ago

TI__Genius 12780 points

Hi Victor,

We are taking a closer look into your question, and will be back with you soon.

Best Regards,

Dan

0 vic zap over 7 years ago in reply to dBrock

Intellectual 740 points

Hi, Dan,
thanks.

Regards, Victor.

0 jim s over 7 years ago

TI__Guru* 91947 points

Victor,

The data sheet is incorrect on page 17. The part uses approximately 10K +/- 10% Ohm resistors for the pullup and pulldowns, so the current would be around 180uA.

Regards,

Jim

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DAC38RF83: CMOS input current