[sdiy] So what's the difference between these IC's?

[KA4HJH]

>> And the same applies to the CD4016 versus the CD4066 they're both quad
>> bilateral switches.  So - what's the difference, if any?
>
>Switch 'On' resistance, the 4066 is lower (something on the order of 300 ohms
>for a 4016 and 120 ohms for a 4066). Maxim and Vishay (former Siliconix) make
>switches down to 1 ohm. The other thing is 'flatness' of the resistance versus
>power supply voltage. The DG4xx series of switches are pretty nice. And if you
>want to get *really* technical, for sample/holds you have to worry about
>"charge
>injection" which is like DC offset in an op amp.

Because of the difference some existing circuit designs require a 4016 or a
4066 specifically. Be careful about substitutions if you're repairing or
cloning an existing circuit. It might work, it might not...

-- 

Terry Bowman, KA4HJH
"The Mac Doctor"

"You'd PAY to know what you REALLY think"--Dobbs