74GTLPH16927VRE4

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Logic-Translators, Level Shifters

The 74GTLPH16927VRE4 is a logic-translator and level shifter. It is designed to interface two different logic types and levels, enabling communication between two digital circuits with unequal power supply voltages. By adjusting the voltage supply, the 74GTLPH16927VRE4 can be used in any digital application that requires logic-level conversion between two dissimilar logic families.

Functionality

The 74GTLPH16927VRE4 is a differential amplifier with dual purpose. It can be used to convert one logic level to another or it can be used as a level shifter. It is designed to interface two different logic types and levels and is specifically designed for applications where one logic is operating with a lower power supply voltage than the other. The device can be operated from a single voltage or dual voltage supplies. It has an output voltage range from 0.8V to 5V.

Features

The device has a wide input common-mode range of 2.5V and supports up to 2mA of output current. It has active-low and active-high enable inputs for easy integration into mixed-signal systems. The wide operating temperature areas allows this device to be used in various temperature applications. Additionally, the low quiescent current and power consumption makes this a very efficient and cost-effective solution.

Applications

The 74GTLPH16927VRE4 is designed for applications that require logic-level conversion between two dissimilar logic families. Some of the application areas include digital data transfer, interface applications, and automotive. It can be used to interface 5V and 3.3V logic systems and can be used in applications such as level translation and bus switching. Additionally, the device is also used in mixed-signal applications, where both analog and digital signals are being processed.

Working Principle

The working principle of the 74GTLPH16927VRE4 is based on the differential amplifier architecture. It consists of two input channels with two switches per channel. The two input channels can be configured either in single-ended configuration or in a differential input configuration. The two switches work in tandem, each actively controlling the asynchronous edge. This enables the device to shift the input signal to the desired output voltage, based on the desired logic family.

The 74GTLPH16927VRE4 has an internal reference voltage, which is used to set the output voltage. This voltage is generated from the power supply and has a range of 0.8V to 5V. The reference voltage is connected to resistors that form a voltage-divider which sets the output voltage. By changing the values of the resistors, the output voltage range can be adjusted to meet the application requirements.

Conclusion

The 74GTLPH16927VRE4 is a logic-translator and level shifter. It is designed to interface two different logic types and levels, enabling communication between two digital circuits with unequal power supply voltages. Its features include a wide input common-mode range of 2.5V and support for up to 2mA of output current, active-low and active-high enable inputs, and wide operating temperature range. The device works on a differential amplifier architecture where two switches control the asynchronous edge enabling the input signal to be shifted to the desired output voltage.

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