MM74HC4020 • MM74HC4040 14-Stage Binary Counter • 12-Stage Binary Counter
February 1984 Revised February 1999
MM74HC4020 • MM74HC4040 14-Stage Binary Counter • 12-Stage Binary Counter
General Description
The MM74HC4020, MM74HC4040, are high speed binary ripple carry counters.
These counters are implemented utilizing advanced silicon-gate
CMOS technology to achieve speed performance similar to LS-TTL logic while retaining the low power and high noise immunity of
CMOS.
The MM74HC4020 is a 14 stage counter and the MM74HC4040 is a 12-stage counter.
Both devices are incremented on the falling edge (negative transition) of the input clock, and all their outputs are reset to a low level by applyi...