74CBTLV3245APWRG4

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The 74CBTLV3245APWRG4 is a single-channel logic-signal switch, multiplexer and decoder designed to provide electrical isolation between two logic-level domains. By allowing data from one domain to be transferred to the other, the device can be used for a range of applications such as level shifting between two different power supplies, data transfer between two islands and multiplexers, among other things.

The 74CBTLV3245APWRG4 is a low-voltage logic-signal switch, multiplexer and decoder available in a 8-pin SOIC package. It features a very low internal leakage current and a high-speed switching time of 2.5ns¹. The logic-signal switch operates with a single supply voltage of 2.7V to 3.6V and takes an analog or digital input signal.

At the heart of the 74CBTLV3245APWRG4 is a pair of CMOS transistor channels controlled by a CMOS logic circuit. This enables the device to switch digital and analog signals between two different logic levels. The first transistor channel ensures a high logic level when it is activated, while the second transistor channel ensures a low logic level when it is activated.

The data is then isolated between these two levels, allowing data from one domain to be transferred to the other. This is an important function, as it enables level shifting between two different power supplies, data transfer between two islands and multiplexing between two signals. It also removes the need for extra wiring and components, as the data is transferred electrically and simultaneously. This is also beneficial when dealing with high-speed logic signals or analog signals such as video and audio.

The 74CBTLV3245APWRG4 is a popular device used in a wide range of applications and the working principle is pretty simple. It takes an input signal and switches it between two different logic-signal domains, providing electrical isolation between the two domains. This ensures transfer of data, level shifting and multiplexing is achieved with minimal effort, making it a great choice for many applications.¹ Data Sheet for 74CBTLV3245APWRG4, Elsevier, 2019.

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