DM74123N

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The DM74123N is a part of the popular 7400-series of logic ICs and is classified as a logic multivibrator. It has two individual oscillating Flip-Flop circuits, which are linked together to within one package, and which can be used to create a variety of delay, pulse, or oscillator circuits.

This versatility has earned the DM74123N special recognition amongst microcontroller engineers, electrical engineers and hobbyists who appreciate its cost-effectiveness and wide range of applications. In addition, its low power consumption and small profile makes it an ideal choice for a variety of applications.

The DM74123N contains both flip-flops with positive and iactive-high reset input. It is composed of ten pins, which makes it small enough to fit into a 10-pin DIP socket and operate with less than 1V from a +5v supply. It can be used to generate clock signals with adjustable time delays, measure time intervals between two external signals, and act as a switch or a flip-flop latch. It can also be used to generate square or diamond-shaped waveforms as well.

The device works on the principle of two NAND gates which are linked together with a Schmitt trigger. This configuration permits the device to oscillate between high to low and low to high levels, depending on the external frequency input. An oscillator circuit can be formed by connecting an external resistor and/or capacitor to the device, allowing users to further customize the time-delay characteristics of the device.

Common applications of the DM74123N include the generation of clock timing signals, pulse width modulation, changing the frequency of or controlling the length of a signal, providing interrupts and running in a count-down mode. It is also capable of operating in latch mode, in which the output of the device is reversed, in order to store a data bit. Alternatively, it may also be used in shift-in / shift-out mode, wherein the device can be used to transfer data in and out of a circuit.

The DM74123N is also capable of performing edge detection or single shot operations, where it can be triggered by an external pulse from a sensor trigger, switch or button. In this mode, the time delay between the trigger pulse and the output pulse can be adjusted and is dependant on the external resistor and/or capacitor connected to the device.

In addition, the DM74123N can serve as a timer where it can be configured to produce a time delay that can be manually adjusted. This is usually done by connecting an externally variable resistor to the device, allowing users to fine-tune the time delay according to their needs. This can be used for various applications such as indicating the remaining time during a cooking process (in a microwave oven), or as an alarm or reminder (in a clock radio).

The DM74123N is a versatile IC, and its use is limited only by the user’s imagination. It is a cost-effective and reliable device that is capable of providing precise timing signals or delaying signals, or simply to function as an oscillator or a data-transfer device. The DM74123N may be just a simple part of the 7400-series, but its value and usefulness are higher than its physical size.

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