HD74LV393A Dual 4-bit Binary Counters ADE-205-276 (Z) 1st Edition April 1999 Description The HD74LV393A contain two 4-bit ripple carry binary counters, which can be cascaded to create a single divide-by-256 counter.
The HD74LV393A is incremented on the high to low transition (negative edge) of the clock input, and each has an independent clear input.
When clear is set high all four bits of each counter are set to a low level.
This enables count trucation and allows the implementation of divide-by-N counter configurations.
Low-voltage and high-speed operation is suitable for the battery-powered products (e.
g.
, notebook computers), and the low-power consumption extends the battery life.
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