74ACT240MTR

Buffers, Drivers, Receivers, Transceivers Overview

The STMicroelectronics 74ACT240MTR is an octal bus buffer with three-state inverted outputs, fabricated using advanced sub-micron silicon gate and double-layer metal wiring C2MOS technology. It operates within a supply voltage range of 4.5V to 5.5V. The device features symmetrical output impedance with minimum source/sink currents of 24mA. Typical propagation delay is 5ns at 5V, with balanced delays (tPLH ≈ tPHL). Quiescent supply current is maximized at 4μA at 25°C. Inputs are compatible with TTL levels (VIH min 2V, VIL max 0.8V).

Buffers, Drivers, Receivers, Transceivers Feature Summary

• Advanced high-speed CMOS fabrication for improved performance.
• Three-state outputs suitable for memory address drivers and bus transmission.
• Direct interface capability with High Speed CMOS, TTL, NMOS, and CMOS systems.
• Integrated protection circuits against static discharge providing 2KV ESD immunity.

Buffers, Drivers, Receivers, Transceivers Applications

• Memory address drivers in computer systems.
• Clock signal distribution networks.
• Bus-oriented transmitters and receivers.
• Driving 50Ω transmission lines.

Buffers, Drivers, Receivers, Transceivers Procurement Notes

Verify the specific package type required, as the MTR suffix indicates tape and reel packaging for the SOP-20 variant. Confirm that the operating temperature range of -55°C to 125°C aligns with system requirements. Ensure input voltage levels remain within the specified limits to maintain TTL compatibility and proper logic threshold operation during functional use.

Buffers, Drivers, Receivers, Transceivers Selection Notes

Select this component when an octal buffer with inverted outputs and three-state control is necessary. It is suitable for designs requiring direct interfacing between different logic families such as CMOS and TTL. Consider the 5ns typical propagation delay and 24mA drive strength for high-speed bus applications. Verify pin compatibility with existing 74 Series 240 layouts if migrating from older technologies.

Buffers, Drivers, Receivers, Transceivers Part Context

This part belongs to the 74ACT series of advanced CMOS logic devices. It serves as an octal buffer and line driver designed to enhance printed circuit board density. The device provides improved latch-up immunity compared to standard CMOS technologies. It is functionally compatible with the legacy 74 Series 240 while offering superior speed and power dissipation characteristics.

Buffers, Drivers, Receivers, Transceivers Replacement Considerations

Check for pin-compatible alternatives within the 74ACT family from other manufacturers. Verify that substitute parts meet the same 4.5V to 5.5V operating voltage and 24mA output drive specifications. Ensure the replacement maintains the inverted output polarity and three-state functionality.