CD40106B: Could VDD be used at 3.3V?

Jimmy Gong

Part Number: CD40106B
Other Parts Discussed in Thread: SN74AHC14, SN74HCS14, SN74LVC14A

Hi team,

I would like to know that this PN could VDD be used at 3.3V? if yes, how about the Vmin and Vman value when VDD = 3.3V? if no, do you have any recommended solution can be used at VDD=3.3V?

BR,

Jimmy

10 months ago

+1 Clemens Ladisch 10 months ago

Guru 287650 points

CD4000 devices are optimized for high voltages. They also work at low voltages, but not very well, and there are no guaranteed characteristics below 5 V.

If you really want to use them, you have to assume that V_IL/V_IH are at GND/V_DD, that the drive strength is 20 µA, and that they are very slow. It would be a better idea to use a low-voltage device like the SN74AHC14, SN74HCS14, or SN74LVC14A.

+1 Malcolm Lyn 10 months ago

TI__Mastermind 20100 points

Hi Jimmy,

Strictly speaking, you can use this device at 3.3V.

However I would recommend the SN74LVC14A instead.

Best,

Malcolm

0 Jimmy Gong 10 months ago in reply to Malcolm Lyn

TI__Expert 3600 points

Hi Clemens and Malcolm,

thanks for your reply. really useful.

BR,

Jimmy

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CD40106B: Could VDD be used at 3.3V?