• State TI Thinks Resolved
  • Locked Locked
  • Replies 1 reply
  • Answers 1 answer
  • Subscribers 19 subscribers
  • Views 223 views
  • Users 0 members are here
Support feedback
Options
Options
Similar topics

This thread has been locked.

If you have a related question, please click the "Ask a related question" button in the top right corner. The newly created question will be automatically linked to this question.

SN74LVC1G32-Q1: Impedance of A/B

Lanxi Li
Expert 6085 points
Part Number: SN74LVC1G32-Q1

Hello team,

My customer want to confirm how to calculate the sink current of the A/B pin and what is the impedance of the A/B port?

The Ioff specification provides the maximum leakage current into any I/O pin (A, B, Y) when the supply is at 0V.

Can I understand that the A/B Impedance would > 5V/25uA=200kOhm?

Best regards,

Lanxi

  • 0
    Guru 272040 points

    In theory, MOSFETs have zero input current. In practice, there is some leakage, specified as II ≤ 5 µA.

    You can divide 5 V by 5 µA to get an impedance value. But the inputs do not behave like resistors, so the maximum leakage current value itself is usually more useful when designing the circuit.