NXP 74AHC244BQ: High-Speed Octal Buffer/Line Driver with 3-State Outputs

The NXP 74AHC244BQ is a high-performance, octal buffer and line driver integrated circuit designed to provide robust signal isolation and amplification in digital systems. Fabricated with Advanced High-Speed CMOS (AHC) technology, this device combines high-speed operation with low power consumption, making it an ideal choice for interfacing and bus driving applications in a wide range of electronic equipment.

This octal buffer features eight non-inverting buffers with 3-state outputs, each capable of being controlled independently by output enable (OE) pins. The two groups of four buffers are enabled by active-low OE signals (1OE and 2OE), providing flexible control over the data flow. When the OE input is held high, the outputs are forced into a high-impedance state (Hi-Z), effectively disconnecting the buffer from the bus. This feature is critical for preventing bus contention in multi-point or bidirectional data transmission systems, such as those found in memory interfaces, data buses, and peripheral drivers.

The 74AHC244BQ operates over a broad voltage range from 2.0 V to 5.5 V, ensuring compatibility with various logic levels, including 3.3 V and 5 V systems. It offers high output drive capability, with the ability to sink or source up to 8 mA at the output, which is sufficient to drive multiple inputs or moderate capacitive loads. The device also exhibits balanced propagation delays and low noise generation, which are essential for maintaining signal integrity in high-speed circuits.

Housed in a DHVQFN20 package, the 74AHC244BQ is designed for space-constrained applications, offering a compact footprint without compromising thermal and electrical performance. Its enhanced ESD protection ensures reliability in harsh operating environments.

ICGOOODFIND: The 74AHC244BQ from NXP is a versatile and efficient solution for digital signal buffering and driving, characterized by its high speed, 3-state output control, and robust performance in diverse logic-level environments.

Keywords:

3-State Outputs

Octal Buffer

Line Driver

High-Speed CMOS

Bus Interface