SN74AVC1T45DRLR

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The SN74AVC1T45DRLR is a logic-level translator, developed by Texas Instruments, that provides the bridge between bidirectional signal transmissions of two transports, operation at different voltage levels. It is a non-inverting, low theft, bidirectional translator. Typically, it is used to transfer signal levels between Low-Voltage Differential Signaling (LVDS) and Low-Voltage Transistor-Transistor Logic (LVTTL), or vice-versa. Another application is as a signal level translator between levels that are not necessarily at a higher and a lower level, but also be converted between any two voltage levels.

The device acts as a translator between two independent logic levels in one direction; for example, it can translate between an input at a 0.7 V to an output at a 1.2 V, or from an input at a 3.3 V to an output at a 0.5 V. Designed with a minimum of parts count, it is available in space saving 4-pin configurations in SOT-23 and SOT-363 packages.

This logic level translator utilizes a modified Schottky transistor clamped output stage to provide the low voltage level shifting capability. The device is maintained in a low power OFF state when the input voltage is below the POR threshold voltage, which is normally programmed when the device is used. At the same time, the pin in which voltage level is configured is also held in a high impedance state.

The device can be used for both direction of translation. An active high or low enable input can be used to control bidirectional signal transmission. When the enable input is activated by either a logic high or low, the respective voltage is outputted at the four-pin in the equivalent direction.

The SN74AVC1T45DRLR logic level translator provides enhanced logic-level shifting solutions to improve signal clarity, reduce noise and energy consumption, and reduce data errors. Its features include its ability to provide full rail-to-rail translation without a level shift capacitor, drive capability up to 5K pF, low power operation, and Hysteresis at Vcc/2. The Hysteresis voltage helps to prevent data loss due to crosstalk in high density devices.

The device can also be used in several digital audio applications. It supports a low frequency grouparound and keeps harmonic distortion low by maintaining the correct voltage level at the output, regardless of the input. It can also be used in high-speed differential data transfer applications such as Infiniband, Ethernet and SATA, to ensure maximum data integrity.

Overall, the SN74AVC1T45DRLR logic-level translator is a robust, cost-effective device to ensure data integrity when transferring signals between two logic levels. By providing the bridging between two different level sets, and maintaining correct flow of power and data, this translator can help maximize the performance of any application.

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