DM74LS125AM

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Logic chips are components essential in every electrical device or system. They are integrated circuits (IC) which contain logic gates and functions that can carry out a wide variety of tasks. DM74LS125AM is a logic chip belonging to the Flip-Flop Schmitt trigger family. It is a 4-channel Quadline Receiver, which has outstanding noise immunity and high-speed switching capabilities. Here we will discuss the applications and working principles of DM74LS125AM.

Application Field

The DM74LS125AM IC is a popular IC used in many digital circuits due to its high performance in terms of speed and noise immunity. It is a single-chip quadruple line receiver developed to interpret data in high-speed applications. Being a high-speed device the DM74LS125AM functions like a receiver for parallel or serial data signals in data buses and can also be used for wave shaping applications.It is commonly used with logic gates and amplifiers where it performs data conversion from serial to paralleland vice versa. This IC may be used as an interface between various logic gates, to provide power transfer from one logic gate to another. The large input buffer capabilities of this IC can also be used in wave shaping applications. Therefore, this IC can be used in various digital or analog applications for signal interpretation, wave shaping and data transmission.

Working Principle

DM74LS125AM is based on the principle of Schmitt trigger. This IC has 4 Schmitt triggers which contain two break points and two make points. At each break point, the voltage level of the signal changes suddenly, while at the make points the level changes slowly. The IC also has an inverter at the output of each of these triggers, thus providing output data signal in both positive as well as negative formats. A signal is applied to the input of the IC and the IC compares this signal with reference voltage levels to determine whether the data is high or low. This signal then passes through the internal Schmitt trigger and is passed to the output through the inverter. The output voltage is either low or high depending on the input signal level and the reference voltage levels. The DM74LS125AM IC also has hysteresis which is a phenomenon in which the output signal level is different for a change in level of the input signal. This makes it extremely useful in applications that involve transmission of weak signals as the hysteresis will clean up the signal. The logic family used in this IC is 74LS and it has power supply range from 3V to 15V.

Conclusion

DM74LS125AM is a highly useful logic IC. It provides excellent switching speed and has outstanding noise immunity, allowing it to work perfectly in a variety of applications including wave-shaping applications, serial-parallel data conversion and interfacing between logic gates among others. Its easy availability and reasonable cost makes it an ideal choice for a host of applications.

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