74ACT08TTR

Overview

The STMicroelectronics 74ACT08TTR is a quad 2-input AND gate integrated circuit manufactured using sub-micron silicon gate C2MOS technology. It operates within a supply voltage range of 4.5V to 5.5V and features symmetrical output impedance with minimum drive currents of 24mA for both high and low states. The device provides balanced propagation delays, typically 4.5ns at 5V, and includes protection circuits against static discharge offering 2kV ESD immunity.

Feature Summary

• Advanced CMOS construction utilizing sub-micron silicon gate and double-layer metal wiring for high speed and low power dissipation.
• Internal two-stage circuit design incorporating buffer outputs to ensure stable operation and high noise immunity.
• Direct interface capability between High Speed CMOS systems and TTL, NMOS, or standard CMOS output voltage levels.
• Integrated protection circuits on all inputs and outputs designed to withstand static discharge events up to 2kV.

Applications

• High-speed digital logic processing
• Transmission line driving applications
• Interface bridging between CMOS and TTL logic families

Procurement Notes

Verify the specific package type required, as the base part number covers DIP, SOP, and TSSOP variants. Confirm that the operating environment remains within the specified -55°C to 125°C temperature range. Ensure input voltages do not exceed the absolute maximum ratings to prevent damage. Check for RoHS compliance status if environmental regulations apply to the final assembly.

Selection Notes

Select this component when interfacing 5V CMOS logic with TTL standards is required. The symmetrical output impedance makes it suitable for transmission line driving. Consider the 74ACT series for improved latch-up immunity compared to older technologies. Verify that the 4.5V to 5.5V supply constraint aligns with the system power architecture.

Part Context

This device belongs to the 74ACT family of advanced high-speed CMOS logic gates. It maintains pin and function compatibility with the standard 74 Series 08 while offering superior performance characteristics. The TTR suffix indicates the component is supplied in tape and reel packaging, facilitating automated surface-mount assembly processes.

Replacement Considerations

SN74ACT08PWR (Texas Instruments)

FAQ

What is the typical propagation delay time?

The typical propagation delay time is 4.5ns at a supply voltage of 5V.

How does the device handle static discharge?

All inputs and outputs are equipped with protection circuits providing 2kV ESD immunity.

Is the output impedance symmetrical?

Yes, the device features symmetrical output impedance with minimum currents of 24mA for both high and low states.