question about the CD40109

[bogdanfirst]

i got a queston about the cd40109....
the enable pins need to be connected to VCC or VDD in oreder to have the shifter to transmit the states to the output?
pls advice!

 

[laroche73]

CD40109 enable inputs

The enable inputs should be tied to VCC to pass data through. In the datasheet a logic 1 is defined as Vcc at the inputs, and Vdd at the outputs. If you want the datasheet I can scan it and email it to you.

 

[bogdanfirst]

ok. thanks....
si if i have the inputs from some CMOS IC's powered by 5V, i need to connect the enables to +5V?
i use VDD as 12V, so a LOW to HIGH shifter......