74ACT244MTR

Buffers, Drivers, Receivers, Transceivers Overview

The STMicroelectronics 74ACT244MTR is an octal bus buffer with non-inverted, three-state outputs. It operates within a supply voltage range of 4.5V to 5.5V and features a typical propagation delay of 4.6ns at 5V. The device provides symmetrical output impedance with minimum drive currents of 24mA for both high and low states. It includes protection circuits offering 2kV ESD immunity and is compatible with TTL output levels.

Buffers, Drivers, Receivers, Transceivers Feature Summary

• Octal bus buffer architecture with two independent four-bit sections controlled by separate output enable inputs
• Advanced high-speed CMOS fabrication utilizing sub-micron silicon gate and double-layer metal wiring C2MOS technology
• Three-state outputs designed for direct interfacing between High Speed CMOS systems and TTL, NMOS, or CMOS voltage levels

Buffers, Drivers, Receivers, Transceivers Applications

• Memory address drivers in 3-state memory systems
• Clock drivers for digital logic circuits
• Bus-oriented receivers and transmitters

Buffers, Drivers, Receivers, Transceivers Procurement Notes

Verify the obsolete status of this component through official STMicroelectronics channels before design finalization. Confirm that the tape and reel packaging suffix matches your automated assembly requirements. Ensure compatibility with existing PCB footprints as pinouts remain functionally identical to standard 74 series 244 devices.

Buffers, Drivers, Receivers, Transceivers Selection Notes

Select this component when interfacing 5V CMOS logic with TTL-compatible signals requiring high-speed performance. The symmetrical output impedance supports driving 50Ω transmission lines effectively. Verify that the operating temperature range meets environmental specifications, as the device supports extended industrial and military ranges depending on the specific grade.

Buffers, Drivers, Receivers, Transceivers Part Context

This part belongs to the 74ACT family of advanced CMOS logic devices manufactured by STMicroelectronics. The 'M' suffix indicates the SO-20 surface-mount package, while 'TR' denotes the tape and reel configuration. It serves as a direct pin-and-function replacement for legacy 74LS244 designs while offering significantly faster switching speeds and lower power consumption.

Buffers, Drivers, Receivers, Transceivers Replacement Considerations

Direct functional substitutes include the 74ACT244B (DIP), 74ACT244TTR (TSSOP), and equivalent parts from other manufacturers such as SN74ACT244DW.