MC74HC240AFG

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Part Status:	Obsolete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:	-55°C ~ 125°C (TA)
Mounting Type:	Surface Mount
Package / Case:	20-SOIC (0.209", 5.30mm Width)
Supplier Device Package:	SOEIAJ-20
Base Part Number:	74HC240

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MC74HC240AFG Integrated Circuit is a High-speed CMOS logic device with tri-state outputs. It is classified into logic circuits such as buffers, drivers, receivers, and transceivers. It is an active device which has three outputs and two power supplies: a logic supply voltage that ranges from 0V to 7V and a supply voltage for the output stage which is 5V tolerant. This integrated circuit consists of three inverters and nine separate tri-state buffers.The MC74HC240AFG application field consists of data acquisition systems, digital clocks based on microcontrollers, memory systems, communication systems, and medical instrumentation. Every output from this chip can drive up to 20mA, allowing it to be used in many applications. In addition, it uses very low power and thus it can be widely used in battery-powered devices.In order to understand its working principle, it is important to first understand how an inverter works. It is a logic device that inverts the input. True becomes false and false becomes true. In an inverter with an input A, the output B is the complement of A; that is, if the input is 0, the output is 1 and vice versa.The MC74HC240AFG operates using the same principle as any other inverters. The inputs are in the range of 2V to 5.5V, and the output is in the range of 1.5V to 5V. A logical 0 on the input yields a logical 1 on the output and vice versa.The tri-state drivers are the most important part of this IC as they allow the output buffers to be controlled. All the outputs are referred to as Tri-State enabled (TSEN) outputs. When TSEN is logic 0, all the outputs become high impedance allowing it to have a very low input capacitance. This is achieved by the remaining two logic signals, which control the tri-state buffers.The nine tri-state buffers have an associated tri-state enable (TSEN) and a inverted tri-state enable (ItsEN). When both inputs are high, the outputs are enabled, and when either TSEN or ItsEN is low, the associated buffer is disabled and the output is high impedance. This feature allows the MC74HC240AFG to switch its outputs depending on the logic levels of the control signals.The MC74HC240AFG has current limitation diodes on each output, making it suitable for high power applications without compromising the performance of the device. In addition, this IC also has high speed and low power consumption, making it a great choice for low power applications.Overall, the MC74HC240AFG is an excellent device for many different applications. It has a wide range of uses due to its high speed, high power capabilities and low power consumption, making it an ideal choice for many different types of applications. It is classified as a buffer, driver, receiver, and transceiver and can be used in many different scenarios.

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