74HC390DB,112

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The 74HC390DB is a powerful, dual decade, up/down counter integrated circuit that can be used in a variety of applications. The 74HC390DB is part of the 74HC logic family, one of the most popular logic families on the market. This IC can be used to count up or down in either binary (0-1) or dual decade (0-99) formats. Additionally, it can also be used to divide down an external frequency, generating an output at some set ratio (or divisor) compared to the incoming signal. This makes it ideal for applications where a fixed frequency signal needs to be generated from a higher, or lower, frequency signal.

The 74HC390DB has a simple setup and configuration. It has two input/output pins, one clock/enable pin, and two counter reset/sync pins. It is controlled via the clock/enable pin. When this pin is driven high, the counter operates in up/down mode, depending on the logic level of the inputs. When this pin is low, the counter is held in the reset state. It will reset itself to 0 and start counting up or down when the clock/enable pin is driven high again.

The 74HC390DB is a dual decade counter, meaning it can count from 0 to 99 in binary format, or from 0 to 19 in dual decade format. The two counter reset/sync pins allow for the counter to be reset, or synchronized to an external device. This makes it perfect for synchronizing different clock signals for synchronization. The 74HC390DB also has an extended temperature range that makes it suitable for many applications such as industrial control, clock and frequency division, and timing pulse generation.

In terms of application fields, the 74HC390DB can be used in a multitude of different applications. For example, it can be used in audio applications such as generating frequency mixing. In industrial applications, it can used to synchronize multiple processor clock signals and generate pulses for controlling sensor pulses. Additionally, it can be used as a clock divider to generate clocks or as a pre-scalar to divide down high-speed signals to a lower frequency. Finally, it can also be used as a frequency counter, or a timer generator to relay control signals.

The 74HC390DB integrated circuit is designed to run on a nominal supply voltage of 3.3V to 5.5V, in the temperature range of 0 degrees Celsius (32F) to 70 degrees Celsius (158F). It comes in a 14-pin DIP or 14-pin SOIC package for easy integration. It can handle data input frequencies ranging from 0.01MHz to 20MHz and it can output frequencies from 0.01kHz to 20MHz. It has a maximum clock frequency of 24MHz and it works at a maximum speed of 24ns.

Overall, the 74HC390DB is a great choice for an up/down counter or divider. It has a simple hookup and configuration, a wide range of operating voltages, and its dual decade capability makes it suitable for a variety of applications including frequency division, audio mixing, and clock synchronization. With its rugged design and low current requirements, it is a great IC for any logic or counting application.

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