Texas Instruments CD4017B

of b series cmos devices" applications: decade counter/decimal decode display (cd4017b) binary counter/decoder frequency division counter control/timers divde-by-n counting for further application information see ican-6166 "cos/mos msi counter and register design and applications" cd4017b and cd4022b are 5-stage and 4-stage johnson counters having 10 and 8 decoded outputs respectively. inputs include a clock a reset and a clock inhibit signal. schmitt trigger action in the clock input circuit provides pulse shaping that allows unlimited clock input pulse rise and fall times. these counters are advanced one count at the positive clock signal transition if the clock inhibit signal is low. counter advancement via the clock line is inhibited when the clock inhibit siganl is high. a high reset signal clears the counter to its zero count. use of the johnson counter configuration permits high-speed operation 2-input decode-gating and spike-free decoded outputs. anti-lock gating is provided thus assuring proper counting sequence. view all in datasheet