[sdiy] MN3102 ----> CD4047 don't really need the 4007?

[mikei at marketbridge.ca]

MN3101/MN3102 is a very convenient chip to use and usually inexpensive. 
Easy to turn it into a voltage-controlled clock using an expo or lin 
current source. 
It has built-in clock buffers so is capable of driving chips as large as 
MN3005 with decent rise and fall times. Also has a built-in 250 nS 
"non-overlap" time for the two clock phases which most simple drive 
circuits ignore.

You should be able to use the CD4047 in a similar manner to the MN chip. 
The 4047 is actually capable of running as fast as 8 MHz or so (4 MHz 
at the outputs) in the A/DA circuit if properly tweaked. You may want to 
buffer the 4047 outputs.
Bye, Mike