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SN74LVC04ADGVRG4 adn temperature

Other Parts Discussed in Thread: SN74LVC14A

I use the SN74LVC04ADGVRG4 to convert the frequency that I take with quartz resonator. Then the data from the SN74LVC04ADGVRG4, I was treated to a microprocessor pic16 and get a working frequency of the quartz resonator. If a little chip heating of the case, it begins to affect the outgoing data and introduce errors in the calculated numbers of frequency.

Ambient temperature of 22 ° C, the body I warmed to 30 ° C. Why is a strong influence on the result of SN74LVC04ADGVRG4 change temperature.

How can this be avoided.

  • Mikhail,

    My initial reaction is that your resonator is not providing a fast enough edge on the input of the inverter. You may need to use a device with a Schmitt trigger input. The SN74LVC14A is an inverter with a Schmitt trigger input.

    Could you please send me your schematic and some oscilloscope pictures that show the inputs and outputs as you describe them?