Part Number
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MC74HC390A |
Manufacturer
|
ON Semiconductor |
Description
|
Dual 4-Stage Binary Ripple Counter |
Published
|
Mar 12, 2006 |
Detailed Description
|
MC74HC390A
Dual 4-Stage Binary Ripple Counter with ÷ 2 and ÷ 5 Sections
High−Performance Silicon−Gate CMOS
The MC74HC39...
|
Datasheet
|
MC74HC390A
|
Overview
MC74HC390A
Dual 4-Stage Binary Ripple Counter with ÷ 2 and ÷ 5 Sections
High−Performance Silicon−Gate CMOS
The MC74HC390A is identical in pinout to the LS390.
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 counters, each composed of a divide−by−two and a divide−by−five section.
The divide−by−two and divide−by−five counters have separate clock inputs, and can be cascaded to implement various combinations of ÷ 2 and/or ÷ 5 up to a ÷ 100 counter.
Flip−flops internal to the counters are triggered by high−to−low transitions of the clock input.
A separate, asynchronous reset ...
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