STMicroelectronics

74ACT244MTR

74ACT244MTR Description

The 74ACT244MTR from STMicroelectronics is a high-performance non-inverting octal buffer/line driver designed for 4.5V to 5.5V operation, making it ideal for 5V TTL-compatible systems. Housed in a 20-pin SOP (Small Outline Package) with tape-and-reel (TR) packaging, this device features two 4-bit elements, each with separate output-enable controls for flexible signal management. With a 24mA output drive capability (both high and low), it ensures robust signal integrity in demanding applications. The 74ACT series offers improved speed and lower power consumption compared to standard TTL logic, while maintaining compatibility with LSTTL inputs.

74ACT244MTR Features

• High-Speed Operation: Optimized for low propagation delay (typically <10ns), enhancing system performance.
• Balanced Output Drive: 24mA sink/source current ensures strong signal driving capability.
• Wide Voltage Range: Supports 4.5V to 5.5V, compatible with 5V TTL and CMOS systems.
• Low Power Consumption: ACT technology reduces power dissipation compared to traditional TTL.
• Robust Packaging: Surface-mount 20-SOP with MSL 1 (Unlimited) moisture sensitivity, suitable for automated assembly.
• RoHS3 & REACH Compliant: Meets environmental and safety standards.
• Independent Output Enables: Allows per-element control, improving design flexibility.

74ACT244MTR Applications

• Bus Buffering: Ideal for address/data bus isolation in microprocessors and memory systems.
• Signal Conditioning: Ensures clean signal transmission in high-noise environments.
• Industrial Control Systems: Used in PLC I/O modules for reliable signal driving.
• Telecommunications: Supports line driving in networking equipment.
• Automotive Electronics: Suitable for 5V logic interfaces in infotainment and control units.

Conclusion of 74ACT244MTR

The 74ACT244MTR is a high-reliability, high-speed buffer offering superior noise immunity and drive strength for 5V digital systems. Its dual 4-bit architecture with independent enables provides design versatility, while low-power ACT technology ensures efficiency. Although marked obsolete, it remains a dependable choice for legacy systems requiring TTL/CMOS interfacing. Engineers working on industrial, automotive, or telecom applications will benefit from its robust performance and compatibility. For modern designs, verifying alternative ACT-series options from STMicroelectronics is recommended.