74ACT244TTR

Buffers, Drivers, Receivers, Transceivers Overview

The STMicroelectronics 74ACT244TTR is an octal bus buffer with non-inverted 3-state outputs, fabricated using advanced high-speed CMOS technology. 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 against static discharge, offering 2kV ESD immunity.

Buffers, Drivers, Receivers, Transceivers Feature Summary

• Advanced high-speed CMOS fabrication with balanced propagation delays
• Direct interface capability with TTL, NMOS, and CMOS systems
• Enhanced latch-up immunity and robust static discharge protection

Buffers, Drivers, Receivers, Transceivers Applications

• Three-state memory address drivers
• Bus-oriented receivers and transmitters
• Clock distribution drivers

Buffers, Drivers, Receivers, Transceivers Procurement Notes

Verify the component status as obsolete in official documentation before procurement planning. Confirm that the TSSOP-20 tape and reel packaging matches specific manufacturing requirements. Ensure compatibility with existing board layouts designed for standard 74 series 244 pinouts.

Buffers, Drivers, Receivers, Transceivers Selection Notes

Select this component for applications requiring direct interfacing between high-speed CMOS logic and TTL or NMOS voltage levels. The symmetrical output impedance supports driving 50Ω transmission lines effectively. Verify that the operating temperature range meets the environmental specifications of the target system.

Buffers, Drivers, Receivers, Transceivers Part Context

This part belongs to the 74ACT244 family of octal buffers and line drivers. It shares functional compatibility with the standard 74 series 244 devices while utilizing ACT CMOS technology for improved speed and power characteristics. The TTR suffix indicates the specific TSSOP package and tape-and-reel delivery format.

Buffers, Drivers, Receivers, Transceivers Replacement Considerations

Compatible replacements include other manufacturers' 74ACT244 variants such as SN74ACT244 or MC74ACT244. Verify pinout and electrical specifications match exactly when substituting across different vendors.