MC74HC244ADT

Series:	74HC
Packaging:	Tube
Part Status:	Obsolete
Logic Type:	Buffer, Non-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-TSSOP (0.173", 4.40mm Width)
Supplier Device Package:	20-TSSOP
Base Part Number:	74HC244

Due to market price fluctuations, if you need to purchase or consult the price. You can contact us or emial to us:   sales@allicdata.com

Introduction to MC74HC244ADT

The MC74HC244ADT is a hex-level Non-Inverting Buffer/Driver from ON Semiconductor. It is classified as a logic device, specifically being part of the TTL family. Buffers, Drivers, Receivers and Transceivers are among some of its features. This chip operates from -55˚C to 125˚C, with a total propagation delay of 25ns.

MC74HC244ADT Application Fields

The MC74HC244ADT is most commonly used in a range of applications based on logic such as computer systems, graphic displays, and automated test equipment. It can also be used in frequency-dividing circuits, especially those where reliability or accuracy of timing is important.

MC74HC244ADT Working Principle

The MC74HC244ADT is a non-inverting buffer which allows signals to pass through but not impede them. This is done by each output being enabled simultaneously. This can be achieved by the two inputs having an active on the D input and an active low on the enable input. By setting the enable input low, the signals from the D input will be sent out on the outputs with the only the degree of fan-out being the only defining factor.In order to simplify this process, the device’s outputs need to be connected to matching resistors. This will help to eliminate any noise on the outputs when both outputs are enabled and the device is operating correctly.In order to prevent false triggering, it is important to set the enable input’s voltage to 3V minimum before signals are sent to it. Additionally, the D input needs to be at the same voltage level as the enable input as any difference between these two will result in an output from one of the outputs.The device also has additional features such as bus hold and pull up. The bus hold feature maintains the logic state of the output even if the enable input is not in the enable position. This prevents data from being overwritten if the enable input is not enabled.The pull up capability is used to ensure the device does not float in an odd state once power is reset. This will stop the device from being affected by other circuits and prevent it from entering an unusual state even after power reset.

Conclusion

In conclusion, the MC74HC244ADT is a logic device that is most commonly used in logic applications. It has the ability to allow both inputs and outputs and the outputs are enabled simultaneously when the enable pin is low. Additionally, the device has additional features such as bus hold and pull up to increase reliability and reduce false triggering.

The specific data is subject to PDF, and the above content is for reference

Part Number	Manufacturer	Price	Quantity	Description