PCA9306USG

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PCA9306USG is an integrated High-speed 2:1 level-translator. It features a direct interface with the Serial Peripheral Interface Bus (SPI™) and Inter-Integrated Circuit (I2C™). It provides a voltage-transition stage between two interface buses. The device offers inputs and outputs in 1.8V and 3.3V operating levels. This device allows 1.8V and 3.3V devices to be interfaced directly on the same bus, saving the hassle of connecting a level translator.

Applications

The PCA9306USG’s integrated level-shifter makes it ideal for many applications, including automotive, consumer, medical, and industrial. Some of the most common areas in which it is used are in interfacing 1.8V and 3.3V microcontrollers, serial to parallel converters and daisy chained devices over a common bus. As it is designed for a wide operating temperature range (-40°C to +125°C), it is also suitable for use in applications in both indoor and outdoor environments.

PCA9306USG is especially well-suited for applications where power or space conservation is key. It is available in tiny packages such as the SOT457-3 or SOT563-4, making it ideal for use in a wide range of applications. It also has the option of a slew-rate limited Schmitt-trigger output, allowing it to be used in noise-sensitive applications such as audio-related systems.

Working Principle

The PCA9306USG is an integrated high-speed 2:1 level-translator with buffered outputs, meaning it is capable of translating signals between two different logic levels. The translator utilizes two distinct channels, one transmitting in logic low (1.8V) and one in logic high (3.3V). It can translate these two signals at speeds up to 400MHz.

When the two signals have different logic levels, the PCA9306USG will translate the high level input to the low level output and vice versa. When the two signals have the same logic level, the PCA9306USG will translate both inputs to the corresponding output. This allows the PCA9306USG to easily interface 1.8V and 3.3V devices.

The PCA9306USG operates in both static and dynamic enable modes, depending on the application and the enable pin in use (DEN or G#EN). In static enable mode, the enable pin is used to enable or disable the device. In dynamic enable mode, the enable pin indicates the status of the output. Depending on the application requirements, either of these options can be used.

Conclusion

The PCA9306USG is an integrated level-shifter capable of translating two different voltages at speeds up to 400MHz. It is suitable for a wide range of applications, including automotive, consumer, medical, and industrial. The device can be used to interface 1.8V and 3.3V devices on the same bus, eliminating the need for external level-shifters. It is also available in tiny packages, making it suitable for use in power or space-constrained applications.

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