CD40174BPWRG4

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Logic flip-flops are basic building blocks of digital logic circuits that can be used in applications such as memory, loops, and registers. Some examples of flip-flops include the CD40174BPWRG4, a device that is commonly used in digital design. This article will discuss the CD40174BPWRG4’s application field and working principle.

General Overview

The CD40174BPWRG4 is a 4-bit wide, edge-triggered flip-flop with asynchronous preset and clear input pins. It is a static device with a maximum data rate of 5 mA / MHz. This device can be used in both dynamic (charge-transfer) and static (current-mode) designs. The control pins for asynchronous preset (SET) and clear (CLEAR) inputs are active low, and the data is valid on the falling clock edge. The propagation delay is typically 60 ns, with a maximum of 80 ns.

Application Field

The CD40174BPWRG4 is an ideal choice for synchronous sequential systems and state machines, such as those implemented in microcontrollers. It is also suitable for memory designs where it can be used as a latch device, or as a storage element in a shift register. Additionally, the CD40174BPWRG4 can be used as a register in arithmetic logic units and can be used in wide range of logic circuit applications.

Working Principle

The CD40174BPWRG4 is a static device, meaning that it can store data without requiring a steady clock signal. It works by sensing the data input when a clock signal is applied, and then latching onto the data - in other words, it “remembers” what was input until it is told otherwise. The data output from the CD40174BPWRG4 is determined by the input and clock signals, and is typically available on the falling edge of the clock signal.

Setup and Control

The CD40174BPWRG4 has two active low asynchronous inputs; SET and CLEAR. The SET input pin causes the outputs to go to their high logic level. The CLEAR input pin causes the outputs to go to their low logic level. When both these inputs are high, the data at the input will take control of the outputs.

Included Features

The CD40174BPWRG4 also features an inverted version of the data outputs. This output can be inverted by applying an appropriate voltage at the input. Additionally, the device features Schmitt-trigger inputs, which are useful for reducing any noise or signal distortions that may appear in the operating environment.

Conclusion

The CD40174BPWRG4 is a versatile static edge-triggered flip-flop with asynchronous preset and clear input pins. It is a great choice for synchronous sequential systems and state machines, memory designs, and a wide range of logic circuit applications. The device’s included features, such as Schmitt-trigger inputs and inverted outputs, add to its overall versatility.

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