CD74ACT74M

Max Propagation Delay @ V, Max CL:	9.5ns @ 5V, 50pF
Base Part Number:	74ACT74
Package / Case:	14-SOIC (0.154", 3.90mm Width)
Mounting Type:	Surface Mount
Operating Temperature:	-55°C ~ 125°C (TA)
Input Capacitance:	10pF
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:	85MHz
Number of Bits per Element:	1
Number of Elements:	2
Output Type:	Differential
Type:	D-Type
Function:	Set(Preset) and Reset
Part Status:	Active
Packaging:	Tube

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Logic - Flip FlopsFlip-flops are an electronic switching device that form the centerpiece of many digital systems. They come in various types and sizes, each with its own distinct characteristics. The 74ACT74M is a commonly used flip-flop. It is suitable for a wide variety of logic systems, such as those built with TTL logic, digital signal processing circuits and field-programmable logic arrays (FPLAs). This article will discuss the application field and working principle of the 74ACT74M.The 74ACT74M is a type of master-slave flip-flop. It is used to store and transfer digital information. This flip-flop is composed of two sets of logic gates. The first set is a master gate and the second set is a slave gate. When an input signal is applied to the flip-flop, the master gate will be triggered first. This will cause the internal slaves’s circuit to be activated and the output from the master to the slave is transferred. When the input signal is removed, the master gate shuts off and the slave will remain in its original state.The 74ACT74M is used in many logic and digital signal processing circuits. For example, it can be used to create a synchronous storage register. This type of register allows for the storage of multiple binary digits at the same time. The flip-flop can also be used to create a dual-port, static random access memory (DRAM). In this application, the output of the flip-flop is used as the address lines of the DRAM.In addition to synchronous storage registers and DRAMs, the 74ACT74M can also be used in more general-purpose logic designs. It is often used to construct dividers, combinational logic functions and multiplexers. The flip-flop is also used to create sequential logic functions, such as frequency dividers, shift registers and counters.The 74ACT74M has a wide voltage range, making it suitable for low-voltage applications. The maximum switching speed of the flip-flop is also quite fast, with a typical delay time of less than 45 nanoseconds. Despite these advantages, the 74ACT74M is quite power-hungry. It consumes around 20 mA of current when operating and up to 60 mA when switching.The working principle of the 74ACT74M is relatively simple. It can be thought of as a two-stage system. In the first stage, the input signal is applied to the master gate. This causes the switching transistors in the master gate to activate and pass the signal to the slave circuit. The slave circuit is composed of two transistors, which are responsible for the output. When the input signal is removed, the slave transistors will remain in the same state, thus transferring the signal to the output.The 74ACT74M is a versatile and reliable flip-flop. It can be used to construct synchronous storage registers, dual-port, static RAMs, dividers, logic functions and sequential logic functions. It features a wide voltage range, fast switching speed and low power consumption. The working principle of the flip-flop is simple, with a two-stage system where the input signal is applied to the master gate and the switched signal is transferred to the output.

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