74AC574SJX

Max Propagation Delay @ V, Max CL:	9.5ns @ 5V, 50pF
Base Part Number:	74AC574
Package / Case:	20-SOIC (0.209", 5.30mm Width)
Mounting Type:	Surface Mount
Operating Temperature:	-40°C ~ 85°C (TA)
Input Capacitance:	4.5pF
Current - Quiescent (Iq):	40µA
Voltage - Supply:	2 V ~ 6 V
Current - Output High, Low:	24mA, 24mA
Trigger Type:	Positive Edge
Series:	74AC
Clock Frequency:	153MHz
Number of Bits per Element:	8
Number of Elements:	1
Output Type:	Tri-State, Non-Inverted
Type:	D-Type
Function:	Standard
Part Status:	Obsolete
Packaging:	Tape & Reel (TR)

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Introduction

The 74AC574SJX is a 5-volt CMOS High-Speed D-Type Flip Flop with positive-edge trigger. This device features a reset input for single-edge operation, and is capable of driving high transients over long distances, providing both high-speed and high-drive capability. The 74AC574SJX is available in a space-saving package and is robust in the presence of power supply variations.

Application Field

The 74AC574SJX makes an ideal choice for both high-speed and low-power applications. This device is extremely well suited for various digital signal transmission applications, making it ideal for chip-to-chip communications, as well as for in-circuit testing and debugging. The 74AC574SJX is well suited for data storage, digital control systems, data communications and image processing applications.

Working Principle

The working principle of the 74AC574SJX is quite simple and straightforward. At the most basic level, it consists of two parts: an input stage and an output stage. In the input stage, the device has two inputs, a clock input (CLK) and a data input (D). When a positive-going edge is applied to the CLK input, the data at the D input is transferred to the output stage.The output stage has two outputs, a Q output and a complement (Q’) output. The Q output will be at logic 1 if the D input was logic 1 prior to the positive-going clock edge. Likewise, the Q’ output will be at logic 0 if the D input was at logic 0 prior to the positive-going clock edge. The inputs and outputs of the 74AC574SJX have the same level of CMOS logic. The 74AC574SJX also has a reset input, which when taken low will reset the output states to their initial conditions. This allows the device to be used in single-edge operation - only allowing data to be stored when a single (positive or negative) edge is detected on the clock input.

Conclusion

The 74AC574SJX is a versatile 5-volt CMOS High-Speed D-Type Flip Flop with positive-edge trigger. This device is extremely well-suited for digital signal transmission applications, making it ideal for chip-to-chip communications, as well as for in-circuit testing and debugging. The 74AC574SJX is also robust in the presence of power supply variations, making it ideal for many other low-power applications.

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