General Description

The CD4020BC, CD4060BC are 14-stage ripple carry

binary counters, and the CD4040BC is a 12-stage ripple

carry binary counter. The counters are advanced one count

on the negative transition of each clock pulse. The

counters are reset to the zero state by a logical “1” at the

reset input independent of clock.

Features

n Wide supply voltage range: 1.0V to 15V

n High noise immunity: 0.45 VDD (typ.)

n Low power TTL compatibility: Fan out of 2 driving 74L

or 1 driving 74LS

n Medium speed operation: 8 MHz typ. at VDD = 10V

n Schmitt trigger clock input