SN74AC373N

If you’re looking for information on logic latches and their application fields, the SN74AC373N is an ideal option. This device, known as a quad D-type flip-flop, is a very important part of integrated logic circuits. It is so reliable due to its ability to store the last valid state of operation, even if the power supply ceases to exist. This device, when placed in working environments like FPGAs (Field Programmable Gate Arrays), can be used for necessary data retention and can provide timing stability.

The SN74AC373N, apart from just its application as a data memory, can also be used for making logic systems. This device can be used for implementing and logic functions such as shift registers and adders, counters, and serial-parallel convertors. With its versatility, this device is one of the most useful components in the world of digital electronics. But before we move on to understanding its working principle, let’s look at its features.

The SN74AC373N consists of four independent D-type flip-flops with complementary outputs that are connected together, making it a quad latch. Each flip-flop in this device includes an output storage register that, when triggered, stores logic states as well as the positive-edge triggered clock inputs. This device has to be handled with extremer care, as it has inputs that can tolerate a voltage range from 0 V to 5.5 V. It is also known for its low-power consumption, as the power consumption for the SN74AC373N at 1 MHz is just 20 mW.

Now that we have a general idea of the SN74AC373N and its salient features, let’s get into the working principle of this logic latch. The first step is to understand the input and output pins of this device. The input pins of the SN74AC374N are labeled as follows: Denotes Input Latch Enable (LE); Denotes Input Data Strobe (DS); Denotes Input Data (D); InOut Input Clock (C); Denotes Set/Reset (SR); Denotes Output Data Strobe (QS); and Denotes Output Data (Q). The working principle is fairly simple as well.

Let’s take a look at how it works. When the input latch enable (LE) line is held high, the flip-flops in the device work and keep their previous states, meaning the outputs will retain their current values. When the LE line is held low, the flip-flop will change its state by either setting the state to ‘1’ when the data strobe is ‘on’ (high) or resetting it to ‘0’ when the data strobe is ‘off’ (low). When the C line is triggered, the high voltage at the data strobe will be shifted to the output. It is important to remember that the DS line must be held high for at least a full clock cycle for the changes to take effect.

When the C line is ‘on’, both the set and the reset lines must be held low, otherwise the flip-flop will not reflect any changes. The set and reset lines can be used to make separate trigger changes to the outputs. Additionally, the SN74AC373N has two outputs, the Q and Q’ outputs, which are the complements of each other. These outputs make it easier for logic systems to be created, since the complements can be used for latch enable lines.

In conclusion, the SN74AC373N is an invaluable tool for digital circuit designs. Its ability to store state information and its negligible power consumption make it an ideal choice for various data-storage applications. Its five input and two output pins, along with its ability to be triggered by positive edge signals, open up a world of possibilities in terms of logic system applications. All of these features make the SN74AC373N one of the must-have components in any circuit.