[sdiy] 4016 madness

[Scott Gravenhorst]

mark verbos <mverbos at earthlink.net> wrote:
>Hi there!
>
>I'm in the middle of some strange analog switch behavior. I have 
>a buchla module that used an MC14016 in it's oscillator core. It 
>is also switching between waveforms with the other 3 switches. It 
>is powered from +15 and a -5 made from resistors on the -15 and 
>ground. Things are acting funny, so I replaced the switch with a 
>CD4016B and the oscillator stopped working. I put in an NTE4016 
>and still no oscillation. Both of these chips were showing about 
>+5 as the negative rail. I put back in the old chip and the 
>oscillator started again. The negative power rail went back to 
>-5. 
>
>The schematic specifies the Motorola part number MC14016. I have 
>never seen Don specify a Motorola CMOS switch. I don't know if 
>the issue is that it's Motorola or an A vs B series thing. 
>
>I'm in LA right now and can't go home without figuring this out. 
>Does anyone have a Motorola MC14016 (not B) in the LA are that 
>they can float me? Any words of wisdom? Thanks! 
>
>Mark

Unfortunately, I don't have any.  All of my CMOS is non-Motorola.

I'm curious - (I cannot seem to find a PDF datasheet on the web for
this part) - I know that most of the CD4xxx series parts top out at 18
volts as the absolute maximum allowed for supply - does the Motorola
part allow 20 volts?

-- ScottG
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-- Scott Gravenhorst
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