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.

  • Resolved

CD74HC4050

Mastermind 8875 points

Replies: 1

Views: 702

Hello,

             PortA has 12V input but there is no power source on VCC of CD74HC4050. While no power source on VCC pin, has any leakage current through to VCC or GND?  Are he input pins HI-Z? Thank you.

BR

Patrick 

  • The section "Operating Conditions" of the datasheet specifies VI as 0 V to 15 V, independent of VCC.

    (CMOS inputs always are Hi-Z; the problem would be an ESD protection diode from the input in to ground, which the HC4050 does not have in order to allow downconverting.)

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.