MM74HC240N

Series:	74HC
Packaging:	Tube
Part Status:	Obsolete
Logic Type:	Buffer, Inverting
Number of Elements:	2
Number of Bits per Element:	4
Input Type:	--
Output Type:	3-State
Current - Output High, Low:	7.8mA, 7.8mA
Voltage - Supply:	2 V ~ 6 V
Operating Temperature:	-40°C ~ 85°C (TA)
Mounting Type:	Through Hole
Package / Case:	20-DIP (0.300", 7.62mm)
Supplier Device Package:	20-PDIP
Base Part Number:	74HC240

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Logic - Buffers, Drivers, Receivers, Transceivers

The MM74HC240N is a logic buffer and receiver designed to increase the performance of logic circuits. It offers a wide range of applications, including logic buffering, logic fanout, logic level translation, and current loop conversions. This makes it an essential part of modern circuits for its ability to improve performance and add reliability. In this article, we will explain the application fields of the MM74HC240N, as well as its working principles.

Application Fields

The MM74HC240N can be used in a variety of applications, including:

• Logic buffering
• Logic fanout
• Logic level translation
• Current loop conversion
• Active bus termination
• Data transmission
• Signal conditioning

The MM74HC240N is especially useful in logic buffering, providing a low-cost and reliable solution to solve clock feedthrough, voltage and noise problems. It can also be used to fan out data and address signals, providing low-capacitance drive capability, reducing power-up and power-down problems. In addition, it can be used for logic level translation for mixed-voltage circuits, as well as for current loop conversion. The MM74HC240N can also be used for active bus termination, allowing devices at the bus end to be turned on and off to reduce reflections and crosstalk. Moreover, it can be used in data transmission, providing logic conditioning and improved signal quality, as well as in signal conditioning for noise reduction.

Working Principles

The MM74HC240N is an integrated 16-bit buffer and receiver. It has a high speed, low current input stage that is used to buffer input data. This is followed by a low-power output stage that provides a low logic output impedance. The output stage is capable of sinking or sourcing up to 25mA, allowing it to supply enough current to drive multiple loads at once.The MM74HC240N is designed with a wide variety of features, such as 3-state outputs, active bus termination, protection diodes, and current-limiting resistors. The 3-state outputs can be used to enable or disable data outputs, while the active bus termination ensures that devices at the bus end are turned on and off. The protection diodes protect the device against transient voltage spikes, while the current-limiting resistors protect the outputs from short-circuiting. The outputs of the MM74HC240N are also designed to be voltage independent, allowing it to interface with a wide variety of circuits. This feature allows the MM74HC240N to be used for logic level translation, allowing it to interface with high voltage and low voltage logic. Overall, the MM74HC240N is a versatile logic buffer and receiver that offers a wide range of applications. It can be used for logic buffering, logic fanout, logic level translation, and current loop conversions. Its features, such as active bus termination, 3-state outputs, protection diodes, and current-limiting resistors, make it an indispensable part of many modern circuits.

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