74AVCH8T245PW:118

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The 74AVCH8T245PW is a member of the Advanced CMOS (AC) family of logic-level translators, level shifters, and buffer gates designed to increase system performance by operating with very low supply currents over a wide voltage range. This device features a low-voltage (3.0 V to 3.6 V) CMOS input Logic Family and a higher-voltage (5.0 V to 5.5 V) CMOS output Logic Family. The 74AVCH8T245PW is capable of translating from one family to another with no power-supply sequencing. This device offers very low propagation delay times (6 ns typically at 5 V).

The 74AVCH8T245PW provides a wide range of applications in logic-level translation use cases such as embedded control and communications, smart grid and automation systems, industrial infrastructure, servers, and consumer products. It also offers applications in logic buffers, or level shifting, where low voltage operation is a requirement. The device is ideal for shorting out hot-swap cards and boards, while ensuring the fast data communication in the next application.

The 74AVCH8T245PW works by translating the logic of two input/output voltage levels (VCCA and VCCB) between two different logic families. The device is constructed of two differential pairs, one pair connected to VCCA and the other pair connected to VCCB. The differential pairs are connected in a cross-coupled arrangement to drive a complementary output. A power supply current draw is minimized when the input goes high. An on-chip logic-level translation circuit is used for VOL and VOH translation.

The 74AVCH8T245PW also uses an active pull-up circuit for level translation. The pull-up circuit is driven by an on-chip transistor, which is supplied with power from VCCB. Whenever the input is low, the transistor is turned on, pulling the output voltage to the VCCB level. This active device is necessary to ensure that the output is driven to a high impedance state when the input is high, minimizing power consumption. This device is able to translate the input logic level to the desired voltage level, and is optimized for use with both slow and fast data rates, getting better performance than other level shifters.

The 74AVCH8T245PW offers a wide range of advantages to the user, such as high-speed performance and low power consumption, as well as small package size and miniaturization. This device is also designed to offer superior speed and performance compared to other devices in the same family, allowing for more efficient data transmission in applications with limited space. Consequently, the 74AVCH8T245PW is an excellent choice for various applications, such as embedded control and communications, smart grid and automation systems, industrial infrastructure, servers, and consumer products.

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