74ACT574TTR

Max Propagation Delay @ V, Max CL:	10ns @ 5V, 50pF
Base Part Number:	74ACT574
Package / Case:	20-TSSOP (0.173", 4.40mm Width)
Mounting Type:	Surface Mount
Operating Temperature:	-55°C ~ 125°C (TA)
Input Capacitance:	4pF
Current - Quiescent (Iq):	4µA
Voltage - Supply:	4.5 V ~ 5.5 V
Current - Output High, Low:	24mA, 24mA
Trigger Type:	Positive Edge
Series:	74ACT
Clock Frequency:	270MHz
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Part Status:	Obsolete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 74ACT574TTR is a High-Speed CMOS Logic Flip Flop designed to meet the requirements of industrial and communication applications. It offers improved device performance and greater versatility than traditional Flip Flops. This device has been designed to provide high speed performance, reliable operation and high noise immunity, which makes it ideal for use in industrial, communication and avionics applications. Flip Flops, also known as registers, are used to store binary data in memory, and can be used to store counts, frequency or even data. They are the building blocks for more complex logic circuits and are used to control the flow of data in digital systems.

Application Field and Working Principle

The 74ACT574TTR is primarily used for storing binary data, counting and frequency data. This makes it an ideal choice for communication applications where data is exchanged over multiple cycles such as in a UART or SPI bus. The device can also be used in digital logic interconnection networks like those used in industrial or avionics applications.The 74ACT574TTR Flip Flop utilizes the master-slave four-gate architecture which uses four transmission gates to operate in harmonic oscillator mode. The master-slave architecture allows lower operating speed than other types of Flip Flops while providing very high speed performance.The 74ACT574TTR operates as a positive edge-triggered Flip Flop, meaning it will be sensitive to the rising edge of the input clock signal. The rising edge of the clock signal is used to capture the data at the D inputs and transfers it to the Q output port.The 74ACT574TTR has a setup time (tSU), which is the time from the input of data until the data is transferred to the outputs in response to the rising edge of the clock. It also has a hold time (tH), which is the time the data is held at the output following the rising edge of the clock.

Benefits and Drawbacks

The 74ACT574TTR is very beneficial in industrial applications due to its high speed performance. It can also be used for communication applications requiring multiple clock cycles since it can support faster clock speeds than traditional Flip Flops. The Flip Flop also offers high noise immunity and power supply flexibility.However, the fast operating speed of the 74ACT574TTR comes with some drawbacks such as increased quiescent power dissipation and intense heating from the cores of the device when it is operating at high clock frequencies. Pulse width distortion can also be an issue when operating at high clock frequencies.

Conclusion

The 74ACT574TTR Flip Flop is a versatile and high-speed CMOS logic Flip Flop that is designed to meet the requirements of industrial and communication applications. Its fast operating speed and high-noise immunity make it an ideal choice for applications that require fast data transfer. However, the device can experience increased quiescent power dissipation and pulse width distortion when operating at high clock frequencies.

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