onsemi

MC74HC244ADTR2  

Buffers, Drivers, Receivers, Transceivers

MC74HC244ADTR2 Description

The MC74HC244ADTR2 from onsemi is a high-performance octal buffer/line driver with 3-state outputs, designed for surface-mount applications. This IC belongs to the 74HC series, offering 4-bit per element organization with two independent elements in a compact 20-pin TSSOP package. Operating within a 2V to 6V supply range, it delivers robust performance with 7.8mA output current (both high and low), making it suitable for driving capacitive or low-impedance loads. The device features tri-state outputs, enabling bus-oriented applications by allowing multiple outputs to be connected without contention. Its REACH Unaffected and EAR99 ECCN compliance ensures broad usability in industrial and consumer electronics.

MC74HC244ADTR2 Features

• High-Speed CMOS Technology: Ensures low power consumption while maintaining high noise immunity.
• Tri-State Outputs: Facilitates bus sharing and reduces system complexity in multi-device configurations.
• Wide Operating Voltage (2V–6V): Compatible with TTL and other logic families, enhancing design flexibility.
• Balanced Output Drive (7.8mA): Capable of driving transmission lines and heavy loads efficiently.
• Surface-Mount Package (TSSOP-20): Ideal for space-constrained PCB designs.
• Moisture Sensitivity Level 1 (MSL1): Suitable for extended storage and handling without dry packing.

MC74HC244ADTR2 Applications

This IC excels in applications requiring bidirectional data buffering, bus driving, or signal isolation, such as:

• Microprocessor/Microcontroller Interfaces: Ensures clean signal transmission between CPUs and peripherals.
• Memory Address/Data Buffering: Prevents bus contention in multi-memory systems.
• Industrial Control Systems: Provides reliable signal conditioning in noisy environments.
• Automotive Electronics: Used in sensor interfaces and communication buses due to its robust voltage range.
• Consumer Electronics: Ideal for display drivers, keypad scanners, and other logic-level translation tasks.

Conclusion of MC74HC244ADTR2

The MC74HC244ADTR2 is a versatile, high-reliability buffer/driver solution, particularly suited for high-speed digital systems requiring efficient bus management. Its tri-state capability, wide voltage range, and strong output drive make it superior to basic buffers, while the TSSOP package ensures compact integration. Though marked obsolete, it remains a dependable choice for legacy designs or applications where proven performance outweighs the need for newer alternatives. Engineers can leverage its features for noise-immune, high-fanout designs across automotive, industrial, and computing domains.

MC74HC244ADTR2 Documents

Download datasheets and manufacturer documentation for MC74HC244ADTR2

Datasheets :

MC74HC244A      

PCN Obsolescence/ EOL :

Multiple Devices 24/Jan/2011      

HTML Datasheet :

MC74HC244A      

Environmental Information :

onsemi RoHS       onsemi REACH