MC74HC393AN Dual 4 Stage Binary Ripple Counter

SKU : MC74HC393AN

The MC74HC393A is identical in pinout to the LS393. The device

inputs are compatible with standard CMOS outputs; with pullup

resistors, they are compatible with LSTTL outputs.

This device consists of two independent 4−bit binary ripple counters

with parallel outputs from each counter stage. A ÷ 256 counter can be

obtained by cascading the two binary counters.

Internal flip−flops are triggered by high−to−low transitions of the

clock input. Reset for the counters is asynchronous and active−high.

State changes of the Q outputs do not occur simultaneously because of

internal ripple delays. Therefore, decoded output signals are subject to

decoding spikes and should not be used as clocks or as strobes except

when gated with the Clock of the HC393A.

Part No : ELE-CH060971806