SN74LVC4245ADWE4

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Circuit designers have long sought the ideal logic translator solution; one that offers maximum flexibility, ultra low power operation and minimal space requirements. The Texas Instruments SN74LVC4245ADWE4, part of the Low-Voltage Logic (LVT) translation family, offers all this and more. This article will discuss the application field and working principle of SN74LVC4245ADWE4 and why it is the ideal logic translator choice for low voltage systems.The SN74LVC4245ADWE4 is a bi-directional translator device, with 1-of-8 address decoding, that can interface between voltage domains as low as 1.2V and as high as 5.5V. The device consists of a three-channel 1-of-8 decoder, and 8 bidirectional buffers. All buffers contain a latch so, once a voltage transition is detected, the output buffer values are latched and remain until the next transition. With its low operating power, fast output transition time, low stand- by power and low input leakage current makes the SN74LVC4245ADWE4 ideal in low power and low voltage designs such as LCD, mobile and battery applications.The SN74LVC4245ADWE4 is primarily used to bridge the logic gap between devices operating at different voltage levels, in order to interface between high-speed and low-speed devices. The basic working principle of the SN74LVC4245ADWE4 is to provide the translation of different types of logic signals defined at different voltage levels. The translation process can occur in either direction, allowing communications between two different voltage domains. In addition, there are two pins that act as address lines which can be used to activate one of the 8 buffers, allowing the device to operate as a 1-of-8 decoder.The SN74LVC4245ADWE4 is also ideal for data bus applications in which multiple interfaces are required. It exhibits very low level-shifting delay time, meaning that the data transition time is minimized. For example, if a device is operating at one voltage level, high-speed logic of up to 66 MHz can be used to send data from one device to another.Overall, the SN74LVC4245ADWE4 is well suited for the job of translating between different voltage levels. Its small size, ultralow operating and stand-by power consumption, fast transition time, and 1-of-8 decoder capability makes it the logical choice for bridging the logic gap between modern low voltage devices. It is an ideal choice for any circuit design needing a robust logic translations solution.

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