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CD4046B: Terminal processing method

cafain
Mastermind 6755 points
Part Number: CD4046B

Hi,

Please tell me how to handle terminals when not using VCO function of CD4046B.
4pin  → ?
5pin  → ?
6pin  → ?
7pin  → ?
9pin  → ?
10pin → ?
11pin → ?
12pin → ?

best regards

  • 0
    Guru 316860 points

    Pin 4 is an output and can be left open.

    Pin 5 is a CMOS input and must have a valid level; set it to logic 1 to disable the VCO.

    C1 (at pins 6, 7) must be at least 100 pF (for VDD = 5V); I don't know if this is needed if the VCO does not run.

    Pin 9 is an analog input, so I guess you can connect it to any valid voltage level.

    Pin 10 is an output and can be left open.

    R1 (at pin 11) must be between 5 kΩ and 1 MΩ; I don't know if this is needed if the VCO does not run.

    R2 is optional, so pin 12 can be left open.