74FCT543CTSOG

Due to market price fluctuations, if you need to purchase or consult the price. You can contact us or emial to us:   sales@allicdata.com

The 74FCT543CTSOG is a high-speed logic buffer with three-state outputs. It has the capability to drive up to 15 Low Voltage Transistor Output (LVTTL) loads and operates from a single Dual Transistor Logic (DTL), Positive-Edge Triggered (PET) or Negative-Edge Triggered (NET) clock, making it a versatile device for different digital systems. This article will explore the application field and working principle of the 74FCT543CTSOG.

Application Field

The 74FCT543CTSOG is used in a variety of applications, most typically in digital systems or microcontrollers. It is especially useful in applications where the output needs to be held in a known state, such as in a parallel port, while the input is changed. It is also a great choice for bus drivers and bidirectional bus drivers, buffer storage, interface conversion and level translation, timing circuits such as clocks and oscillators, and more.

Working Principle

The 74FCT543CTSOG is a 3-state output buffer, meaning it can sink or source current, as well as hold its outputs in a High-Impedance (HiZ) state. This buffer is particularly useful because it is a high-speed logic buffer, meaning it can drive with very low propagation delay. The buffer is powered by a positive voltage supply and has two types of output, complementary and non-complementary. The input of the 74FCT543CTSOG can be driven from single DTL, PET or NET clock, and then be connected with the outputs to the LVTTL. The three-state outputs connected to the LVTTL loads can be driven to only two selected states, high (Vttl) and low (GND). The circuit works by passing the input signal to its outputs in either non-inverting or inverting forms. In non-inverting mode, the output of the buffer will follow the input directly, while in inverting mode, it will invert the input. The state of the output can be controlled with the output enable (OE) pin, which is used to enable or disable the output. The enable pin is active low, meaning that when it is low, the outputs are enabled, while when it is high, the outputs are held in HiZ state.

Conclusion

The 74FCT543CTSOG is a high-speed 3-state output buffer, designed for applications requiring high speed data transfer, such as digital systems, microcontrollers, bus drivers, bidirectional bus drivers, buffer storage, interface conversion, level translation and timing circuits. Its wide variety of features make it an ideal choice for these applications, as well as those requiring a HiZ state. Its simple operation and output enable control gives it added functionality and makes it easy to integrate into a digital system.

The specific data is subject to PDF, and the above content is for reference