CMOS/TTL chip questions (was: Cmos Latch Octal)

[Hugo Haesaert]

Hi Adrian and All !

Been looking at the schematics for sequencers .

Superseq, Serge TKB, and ETI use synchronous counters .

Practical Electronics and TomG use Johnson counter 4017 .

A design on Uboat uses ripple counter .  4040 proposed by Adrian is 
also a ripple counter .

Anybody care to comment on timing stability of these ic designs in 
practice .

Btw, in the 70s i constructed a metronome design from Elektor using a 
4017 .  Some of my friends commented that not all steps were equal, 
the reset was doin it . Did not have the means to measure this at the 
time .

Thanks .


Keep 'em oscillating :)


Hugo
=