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CD4504B: CD4504B realize 3.3V transfer to 5V

Lenna Yan
Intellectual 1960 points
Part Number: CD4504B
Other Parts Discussed in Thread: SN74LVC8T245, SN74HCT244

Hi experts,

Does it work when VCC set to 5V, VDD set to 5V and input voltage set to 3.3V to realize 3.3V transfer to 5V?

Best regards.

  • 0
    TI__Guru* 96661 points

    Hi Lenna,
    If you have the device in the TTL mode, then this will work. Check the VIH/VIL specs in the electrical characteristics table.

    Have you considered using a more modern 3.3V to 5V translator, like the SN74LVC8T245 or the SN74HCT244?  The CD4k family is not very optimzed for 3.3V operation (it's the only logic family that can go to 18V though).