ES-12    3-Digit Up Counter     (DC 5 ~ 10V)  

A  very useful 3-digit counter that is based on the popular MC14553 & CD4543 CMOS ICs. It counts from 0 ~ 999 (counts up only).   Two or more units can be cascaded  to form a  6, 9 ... (or any multiple of 3) digit counter.  When the count exceeds 999, the display rolls over to 0 & the overflow output goes high briefly. (please refer to datasheets for details on overflow)
Inputs : master reset, clock, latch enable   Output : Overflow

            Click here for datasheets HEF/CD 4543  /  MC!4553