74ACT125MTR

Buffers, Drivers, Receivers, Transceivers Overview

The STMicroelectronics 74ACT125MTR is a quad bus buffer with three-state outputs, manufactured using advanced high-speed CMOS technology. It operates within a supply voltage range of 4.5V to 5.5V and features symmetrical output impedance with a minimum drive capability of 24mA for both high and low states. The device provides typical propagation delays of 5ns at 5V and includes protection circuits against static discharge, offering 2kV ESD immunity. It is designed for direct interfacing between High-Speed CMOS systems and TTL, NMOS, or CMOS output voltage levels.

Buffers, Drivers, Receivers, Transceivers Feature Summary

• Advanced high-speed CMOS fabrication utilizing sub-micron silicon gate and double-layer metal wiring C2MOS technology
• Three-state control input allows placement of outputs in a high-impedance state when set high
• Capable of driving 50Ω transmission lines with symmetrical output impedance
• Integrated protection circuits provide immunity against static discharge and transient excess voltage

Buffers, Drivers, Receivers, Transceivers Applications

• Interfacing High-Speed CMOS systems with TTL, NMOS, and CMOS output voltage levels
• Driving 50Ω transmission lines
• Bus-oriented memory and register drives

Buffers, Drivers, Receivers, Transceivers Procurement Notes

Verify the specific package type required, as the 74ACT125MTR designation corresponds to the SOP-14 surface-mount package. Confirm that the design accommodates the specified operating temperature range of -55°C to 125°C. Ensure power supply decoupling meets the recommended conditions for the 4.5V to 5.5V operating voltage range to maintain signal integrity and performance specifications.

Buffers, Drivers, Receivers, Transceivers Selection Notes

Select this component when a quad bus buffer with three-state control is needed for high-speed digital applications. It is suitable for designs requiring direct compatibility with TTL logic levels while operating from a standard 5V CMOS supply. Consider the 14-pin SOP package for surface-mount assembly constraints. Verify that the 24mA output drive current meets the load requirements of the connected circuitry.

Buffers, Drivers, Receivers, Transceivers Part Context

This part belongs to the 74ACT series of advanced CMOS logic devices, which are pin and function compatible with the standard 74LS125. The 'M' suffix indicates the SOP-14 plastic small outline package, while 'TR' denotes tape and reel packaging. It serves as a buffer and line driver within the broader family of digital logic integrated circuits produced by STMicroelectronics.

Buffers, Drivers, Receivers, Transceivers Replacement Considerations

Direct substitutes include the CD74ACT125M96 from Texas Instruments and the MC74ACT125DR2G from onsemi. These alternatives offer similar functionality and pinouts but require verification of specific electrical characteristics and package dimensions against the original design requirements.