MC74HC4020ANG

The MC74HC4020ANG is a dual CMOS 4-bit synchronous binary up/down counter with asynchronous reset. It is a part of the MC74HC4020 Dual 4-Bit Synchronous Binary Counters family from ON Semiconductor. The MC74HC4020ANG is the smallest of the dual 4-bit synchronous binary counters and is designed for low-power operations. It is manufactured using ON Semiconductor\'s enhanced N-channel and P-channel CMOS logic technology.

The application field of the MC74HC4020ANG is mainly within the counter/divider domain. It is mainly used in applications such as frequency divider logic, pulsewidth modulation, and audio frequency period measurement. Other logic applications such as Programmable Divider, One-Shot, and Pulse generator can also make good use of this IC.

The working principle of the MC74HC4020ANG is simple and straightforward. Two separate 4-bit synchronous binary counters, each with a COMSEN/N reset input, receive asynchronous parallel inputs from either the left or right side. Each input has its own active-low reset input. When the reset input is low, the counter is reset to its initial state. The parallel inputs from each side are further supplied to a set of latches so that the counting continues uninterrupted. The counters can count up or down depending upon the inputs applied to the UP/DOWN mode select. When the up/down mode select is high, the counter will count up; when it is low, the counter will count down. The output of each counter is then converted to an output pin so that it can be accessed externally.

In summary, the MC74HC4020ANG is an efficient and small IC designed to reduce power consumption while performing counter and divider related functions. It uses two 4-bit synchronous binary counter with asynchronous reset and can count up or down depending on the UP/DOWN mode select input. This makes it ideal for a wide range of applications including frequency divider logic, pulsewidth modulation and audio frequency period measurement.