CD74HCT21M96

Current - Output High, Low:	4mA, 4mA
Base Part Number:	74HCT21
Package / Case:	14-SOIC (0.154", 3.90mm Width)
Supplier Device Package:	14-SOIC
Mounting Type:	Surface Mount
Operating Temperature:	-55°C ~ 125°C
Max Propagation Delay @ V, Max CL:	27ns @ 4.5V, 50pF
Logic Level - High:	2V
Logic Level - Low:	0.8V
Series:	74HCT
Current - Quiescent (Max):	2µA
Voltage - Supply:	4.5 V ~ 5.5 V
Features:	--
Number of Inputs:	4
Number of Circuits:	2
Logic Type:	AND Gate
Part Status:	Active
Packaging:	Tape & Reel (TR)

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Logic - Gates and Inverters

The application fields and working principles of CD74HCT21M96 can be divided into two categories: logic gates and inverters. In logic gates, the circuits that use CD74HCT21M96 are gates which process logic data to execute operations such as AND, OR, NAND, and NOR. In inverters, CD74HCT21M96 circuits operate like regular inverters which provide a reversible, low impedance noise path to control electrical signals. The connection and control of the electrical signals is done through the application of voltage or current to the circuits.

In logic gates, CD74HCT21M96 provide the ability to execute certain operations and logic functions. This means that when data is passed through the gate there is the potential to execute a number of operations, such as AND, OR, NAND, and NOR. When these gates are paired, they can also perform logical operations such as Exclusive OR (XOR) or Exclusive NOR (XNOR). For example, a two-input AND gate will take two logic inputs, A and B, and output a logic 1 if both A and B are logic 1. This can also be achieved if the two control inputs are wired together, making the gate an inverter.

In contrast to gates, inverters can be used to control electrical signals by providing a reversible, low-impedance noise path. This is achieved by connecting a power source to the circuit, allowing voltage or current to be applied to effectively control the electrical signals. The initialization voltage or current must be high enough to turn the inverter on and is usually set to be slightly higher than the turn-on voltage of the particular circuit. Once the voltage or current has been applied, the inverse voltage or current can then be used to turn the inverter off.

In addition to functioning as a gate or an inverter, CD74HCT21M96 can also be used as an amplifier. This is possible via the feedback option that these chips offer. This is accomplished by wiring the input and output pins together, allowing the gate to respond to the variations in the input signal by amplifying the signal. This is an effective way to amplify a signal as the power dissipated is limited. As the chip is provided with protectors, it is also able to handle the voltage surges during transmission.

In summary, the CD74HCT21M96 offer the potential to execute a range of operations and logic functions. By applying voltage or current, they are able to act as either gates or inverters, while also offering the potential to act as an amplifier. This makes them a versatile and reliable component to be used in many different circuits.

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