MC74HC125ADTG

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MC74HC125ADTG is a logic device belong to the family of Buffers, Drivers, Receivers, Transceivers and designed for interfacing between digital circuit blocks in order to provide additional drive capability. This device improves the performance, reduces power consumption and increases system speed. The IC description is given below for circuit designers and application engineers.

The MC74HC125ADTG is a 4-channel constant-current logic level translator. It is designed to transfer signals from a low-voltage device to a higher-voltage device and operate the voltage level translator under varying input and output voltage levels. The main features of the transmitter includes an active current source that allows it to be configured as either a voltage-level converter or a voltage-level translator.

The MC74HC125ADTG features four input and four output lines, indicating direction of data flow. The direction of data flow is determined by the Sour/Dest line, which acts as an enable/disable input. This allows the device to be used in uni-directional or bi-directional data paths.

The MC74HC125ADTG also features built-in input protection that helps prevent any sudden data changes from falsely triggering the device. The built-in over-voltage protection keeps the MC74HC125ADTG from damaging itself due to improper voltage connection.

The working principle of MC74HC125ADTG involves the transfer of logic signals between different voltage levels. The device has a logic input and a logic output that are transposed such that the output logic level is opposite to the input logic level. The device achieves this using a pair of transistors connected back-to-back, each controlling the current flow between the source and the destination. The transistors act as switches that drive the output from high to low (or vice versa) based on the voltage level at the input.

The MC74HC125ADTG is designed for a wide range of applications, including logic signalling across different logic domains, logic between multiple levels of logic families, logic translation for high speed communication channels and logic translation for small form factor devices. It is suitable for interfacing between digital logic circuits that use different logic families such as 3.3V or 5V CMOS, TTL, and other logic families. It can also be used for uni-directional or bi-directional signals.

To summarize, the MC74HC125ADTG is a 4-channel constant-current logic-level translator designed to transfer signals between different logic families without the need for additional logic. It features an active current source configuration and built-in protections to prevent damage due to improper voltage connection. It is suitable for a wide range of applications, including logic signalling and logic translation. The device provides users with enhanced performance, reduced power consumption, and improved system speed without the need for additional logic components that consume power and occupy space.

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