SY55855VKI

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SY55855VKI is a quadruple-channel logic translator and level shifter for applications requiring multi-voltage level compatibility. It is used for voltage-level shifting and signal level output conversions. It can be used to drive multiple voltage levels from any two-rail common-mode voltage source over an extended temperature range.

SY55855VKI integrates four voltage translator channels and provides a maximum current of 5mA per channel. The SY55855VKI is designed to operate with supply voltages ranging from 1.8V to 5.5V, with a logic threshold voltage of 0.5V (maximum). This flexibility makes it ideal for applications like memory cards, embedded systems, automotive data buses, system management buses, and raspberry pi based projects.

It has an integrated level translator, allowing it to interfere with signals from different voltage rails without altering the digital content. This makes it useful for connecting digital devices to different voltage busses and systems. It also has a high-speed level-shifting ability of 400 Kpbs in standard-speed mode and 900 Kpbs in turbo-speed mode.

The SY55855VKI works by performing the logic level conversion before the transmission of data. This is done by changing the logic level of the transmitted signal between the two input voltage rails, thereby providing compatibility between the two voltage levels. In addition, the SY55855VKI provides noise immunity, operating at Voltages up to 20V with extremely low leakage currents.

SY55855VKI also features hot-swap capability, allowing power to be turned on or off without interruption of the device’s performance. This is achieved by using a hot-swap circuit that provides levels of protection to the device against ESD-induced surges. The circuit can also protect the system from damaging current overloads.

Applications for SY55855VKI can range from consumer electronics to automotive and industrial devices. This level translator is used for interfacing devices with different levels of supply voltage, such as when connecting digital logic devices to systems that operate at different voltage levels. Examples include interfacing an SPI bus to different communication protocols, interfacing an SPI bus with different memory devices, and interfacing a soft microcontroller with a FPGA or ASIC.

In summary, the SY55855VKI is a versatile and reliable quad-channel logic translator with integrated level shifting. It provides an excellent solution for level-shifting applications, as well as protecting the system from damaging current overloads, while allowing hot-swapping of the device.

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