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Diodes Incorporated - Level shifters provide high-speed and easy-to-use logic translation

Technology Cover
Post Date: 2019-11-06, Diodes Incorporated

Diodes Incorporated has released two flexible, high-speed automotive-compliant voltage translators for employment in environments with ambient temperatures up to 125C. The PI4ULS5V108Q and PI4ULS5V202Q are created for employment in ADAS, infotainment, and telematics equipment.

Both devices are compatible with both push-pull or open-drain connections, providing the convenience of a single part number to satisfy multiple applications. Also, bidirectional flexibility with automatic direction sensing simplifies level shifting between bus interfaces, such as PMBus, SMBus, or I2C devices, by excluding any need for a direction-control signal.

The eight-channel PI4ULS5V108Q performs up-translation at up to 100MHz and down-translation at over 100MHz, providing responsive performance for usage in high data-rate interfaces. Designers can guarantee fast exchanges across SPI or other interfaces, with no limitation due to level shifting. This allows data transfers between SoC and peripheral components to be performed with optimum efficiency.

The PI4ULS5V202Q is a two-channel translator with internal 10kOhm pull-up resistors, enabling direct connection to interfaces using open-drain topology, such as I2C ports. The large maximum voltage-translation range of 1.2V to 5.5V gives the flexibility to operate with a broad variety of I2C chips and circuit designs. The device features fast rise and fall times, due to high-speed one-shot detectors at the IC inputs and is capable of supporting data rates of up to 20Mbps.

Both devices are AEC-Q100 grade 1 qualified, PPAP capable, and in production at IATF 16949 certified sites.

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