ON Semiconductor MC74VHC244DT Octal Bus Buffer/Line Driver

The MC74VHC244DT is a high-performance, octal bus buffer and line driver designed to interface with 3.3V and 5V systems. Manufactured by ON Semiconductor, a leader in the semiconductor industry, this IC provides a robust solution for digital signal buffering with the added functionality of line driving for extended distances and higher capacitance loads. With its advanced silicon-gate CMOS technology, the MC74VHC244DT offers superior signal integrity, making it an ideal choice for a wide range of applications in computing, telecommunications, and industrial markets.

This integrated circuit features eight non-inverting buffers with 3-state outputs, providing the flexibility to be used as a buffer or a line driver. The 3-state outputs ensure that multiple ICs can be connected to a common bus, which remains in a high-impedance state when not in use, effectively preventing bus contention. The MC74VHC244DT is characterized for operation from -55°C to +125°C, ensuring reliable performance across a broad range of operating conditions.

The device is housed in a TSSOP-20 package, which is optimized for reduced space on printed circuit boards, making it suitable for space-constrained applications. The pin configuration is designed for easy PCB layout and compatibility with standard sockets and connectors, facilitating quick design and prototyping.

Key features of the MC74VHC244DT include:

• High-speed: t<sub>PD 4.6 ns (typ.) at V<sub>CC = 5V
• Low power dissipation: I<sub>CC = 2 µA (max) at TA = 25°C
• Power-down high-impedance inputs and outputs
• Supports live insertion and withdrawal (partial power-down mode)
• ±24 mA output drive at 5V
• Latch-up performance exceeds 300 mA
• ESD performance: Human body model > 2000V, Machine model > 200V

With its robust design and high-speed performance, the MC74VHC244DT is a versatile component that enhances the efficiency and reliability of digital systems. Whether used in data communication equipment, address and data buffers, or as memory address drivers, this device from ON Semiconductor is an excellent choice for designers looking to optimize their high-speed digital interfaces.