MC74VHC573DWR2G Integrated Circuits (ICs)

Due to market price fluctuations, if you need to purchase or consult the price. You can contact us or emial to us:   sales@allicdata.com

Logic latch is an electronic device capable of storing data over a relatively long period of time. It differs from a conventional storage device in that it is not a memory element, but rather a smaller molecule that induces a semi-permanent state consisting of two distinct stable states. Latches are typically used to store data in different types of digital circuits.

The MC74VHC573DWR2G is a low-power, dual-supply voltage logic latch that uses an ESD diode protection circuit. This device is a 5-bit static latch featuring an active-low latch enable control input, an active-low reset control input, and five data inputs. The outputs of the device consist of five inverted latch outputs, five latch outputs, and an active-low reset output.

Application Field

The MC74VHC573DWR2G latch is most commonly used for applications such as memory retention, data retention, and sequential data control. This device is also useful for error detection and correction circuits, where the latches can be used as parity bits. Additionally, the latch is often used in address increments and decoders, as well as in bus demultiplexers.

Working Principle

The MC74VHC573DWR2G latch is often referred to as a ‘static’ latch because the output signals do not change until the input signal changes. The operation of the device depends on two inputs, the ‘Latch Enable’ (LE) and the ‘Reset’ (R/S). When LE is low and R/S is high, the output is no different from the input. However, when LE is high and R/S is low, the output switches to a logic one, thus ‘latching in’ the data.

The very ‘suitable’ operation of the MC74VHC573DWR2G latch is enabled by two high-speed CMOS transistors, M1 and M2, which both use depletion-mode technology. At the latch enable control input, LE, a ‘window’ is formed between M1 and M2. When LE goes low, the window opens and the data flow from the data input (DI) to the data output (DO) and latch output (L) is blocked, thus latching in the data.

The Reset control input, R/S, is used to reset the latch circuit by causing an inversion of all the relays with LE low, no matter what their states are. When R/S is low, the output of the reset control is high and the reset relay is connected to the reset terminal (RT). When RT is high, the latch reset input is high, thus resetting the latch circuit.

The MC74VHC573DWR2G latch is equipped with strong ESD protection, which ensures that the output states are not affected by short-term electromagnetic interference. To further ensure the stability of the output states, the device is provided with a reset circuit, meaning that a LOW logic level at the Reset input is capable of resetting all the latches in the device.

The MC74VHC573DWR2G latch is an ideal electronic device for a wide range of applications, particularly where data storage needs to be ensured for a relatively long period of time with minimal power consumption. By using its two control inputs, LE and R/S, users are able to latch in, reset, and refresh data without any external components.

The specific data is subject to PDF, and the above content is for reference