74LV2GT04AUSE-E

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The 74LV2GT04AUSE-E (74LV2GT04) is a member of the Texas Instruments 1000-series TTL logic family. It is a low-voltage version of the SN54/74LS04, but provides a higher immunity to noise and can survive electrostatic discharge (ESD) significantly better than standard TTL parts. It is a Schottky Buffer/Line Driver with four gates, and hence functionally there are four independent inverting buffers. The device operates over the voltage range of 2.7V to 5.4V, allowing for flexibility in the application.

The main application of 74LV2GT04AUSE-E is as a buffer or line driver. This can be seen in the schematic of the device below, where the Logic Input (LI) pins are connected to the Logic Output (LO) pins, with an input buffer in between. The output drivers are capable of driving up to 25mA, enough to drive large capacitive and inductive loads. Buffers can be used to prevent loading down of voltage signals and also to isolate two sections in an electronic circuit, as seen in 74LV2GT04AUSE-E’s ability to run at slow speeds.

The working principle of the 74LV2GT04AUSE-E is simple; the inputs are applied to the input buffer, and the outputs are generated from the output buffer. The input buffer passes the input logic levels to the output buffer, where the logic level is either high or low according to the logic level rules of TTL. The logic levels are inverted at the output, to provide the logic level required by the output. The chip also has a Schottky Diode placed between the input and the output, which acts as a protection device. In the event of an overvoltage or electrostatic discharge on the input, the diode will conduct and dissipate the energy, thus protecting the chip.

The 74LV2GT04AUSE-E is a very useful and versatile logic device, capable of withstanding up to 5.4V and 250mA of output current. It is also very tolerant of static electricity, meaning it is well-suited to many applications. The low-voltage operation means it can be used in many consumer-oriented applications. The 74LV2GT04AUSE-E provides great performance with high noise immunity and is well suited for many logic and line driver applications.

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