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Introduction to 84LCX125MTR

84LCX125MTR is a series of logic-level unidirectional buffers developed and manufactured by STMicroelectronics (abbreviated as ST). They are mainly used in level translation, bus buffering, register configuration and address & data bus multiplexing applications.

Application Field

Due to the versatility of 84LCX125MTR in various applications, they are popular in the fields of peripheral interface buffering and level translation, mitigating the effects of noise and transient signals. It can be used to buffer and multiplex address and data lines of the system or used to configure logic registers. In addition, it can be used in buffering system buses and other specialized logic functions. Typical applications include microcontrollers, serial bus interfaces, bus transceivers, memory and other peripherals.

Working Principle

84LCX125MTR is a logic-level unidirectional buffer. It has four channels and each channel has two input and two output port,which are E1,E2,Q1,Q2 ports respectively. When the inputs of E1 and E2,i.e. IN1 and IN2,are driven, OUT1 and OUT2 are driven according to the logic level of E1 and E2. For example, if the logic level of IN1 and IN2 is high, the outputs OUT1 and OUT2 will be high.

84LCX125MTR series is designed to operate between voltages ranging from 0.1V to 3.3V, and has an open drain totem-pole outputs that can drive up to 15mA. Tow of its more advanced features include wide supply voltage range (Vcc can be as low as 0.8V) and minimum drive current (obtained by driving lower voltage for increased noise margin).

Conclusion

84LCX125MTR is a high speed, low-power logic-level unidirectional buffer designed and manufactured by STMicroelectronics. It is widely used in various logic-level applications, such as peripheral interface buffering, level translation, and bus buffering. Its wide supply voltage range and minimum drive current makes it especially suitable for high-speed applications.

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