74167FC中文資料仙童半導體數(shù)據(jù)手冊PDF規(guī)格書

DESCRIPTION 一 The 167 contains asynchronous decade counter and four

decoding gates that serve to gate the clock through to the output at a sub-

multiple of the clock frequency. The output pulse rate, relative to the clock

frequency, is determined by signals applied to the Select (So 一 Ss) inputs.

Both true and complement outputs are available, along with an enable input

for each. A Count Enable input and a Terminal Count output are provided

for cascading two or more packages. Asynchronous Master Resetand Master

Set inputs prevent counting and clear the counter or set it to maximum

respectively.