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cmos 74hc debounce pull up resistors

J

Jim Thompson

Jan 1, 1970
0
"Fred Bloggs" ...

I did measure the bounce time and pattern of a lot of different switches and
relay contacts. Never saw any "first contact" below 100ns. That's enough to
settle even a good old CD4000 buffer. Do you have you any data on the
contrary?

The circuit never failed me, even when using it to edge-trigger FF's or
counters.

Arie

Didn't you mean something like....

|\ |\
+ ------o | \ | \
---o-----+--| }0---| }0--+---
GND ------o | | / | / |
| |/ |/ |
| |
+---\/\/\/\/------+


...Jim Thompson
 
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