SN74LVTH573DW

The SN74LVTH573DW is an integrated circuit designed by Texas Instruments. It is part of their low voltage liquid crystal display (LVLCD), low voltage advanced CMOS logic and low voltage CMOS logic families, respectively. This chip, which combines features from each of these families, is a latch that provides logic functionality at a low voltage. It is made up of two 4-bit latches and can be used to latch data from two 4-bit buses. It is compatible with TTL, advanced CMOS (ACMOS) and CMOS logic families.

The SN74LVTH573DW is a dual 4-bit latch that is used in many types of data transmission, clocking and other logic operations. Because of its unique combination of properties from each logic family, it has become a useful tool for engineers and designers alike, who are looking for low-voltage logic solutions. It is also used in many embedded systems and computer prototypes when a low voltage is needed.

The main application field of the SN74LVTH573DW is in field-programmable gate array (FPGA), digital signal controller (DSC), and programmable logic device (PLD) applications where data latching is necessary. It is also used in several types of computer designs, such as smart phones, tablets and set top boxes, where a low-voltage logic is relevant. Additionally, the device can be seen in many logic models and circuits where data is clocked in from multiple sources and needs to be retained.

The SN74LVTH573DW works by latching data from two 4-bit buses. The latch consists of two clocked D-type flip-flops, each having two data inputs, two clock inputs and two output registers. Whenever either of the two active-low clocks is enabled, the signals present on the D0 and D1 inputs are latched and are maintained to their respective outputs and registers. The latch is also able to maintain data during signal and power glitches caused by ESD and EMI.

Additionally, the SN74LVTH573DW features an enable input and asynchronous preload inputs. The enable input is an active-low enable that is used to turn off the output data enable signal. This is done to avoid any unintentional latching and data propagation that could arise if the clock was pulsed while the enable was off. The asynchronous preload inputs are used to preset the data of the registers before the clocks are enabled. This way, the output data can be aligned with the expected data without any data-dependent delays.

In conclusion, the SN74LVTH573DW is a dual 4-bit latch that is useful when data from two 4-bit buses needs to be latched. Its low-voltage logic makes it a great fit for many embedded systems and computer prototypes. Additionally, its particular combination of properties from the TTL, advanced CMOS (ACMOS) and CMOS logic families makes it a versatile device for data transmission, clocking and other logic operations. It is also useful in many FPGA, DSC and PLD applications, and can be seen in several types of computer designs.

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