74ACT02TTR

Overview

The 74ACT02TTR is a quad 2-input NOR gate manufactured by STMicroelectronics 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 5ns at 5V, and includes protection circuits against static discharge offering 2kV ESD immunity. It is designed for direct interfacing with TTL, NMOS, and CMOS systems.

Feature Summary

• Advanced high-speed CMOS fabrication utilizing sub-micron silicon gate and double-layer metal wiring technology
• Direct interface capability with High Speed CMOS, TTL, NMOS, and CMOS output voltage levels
• Symmetrical output impedance ensuring equal sourcing and sinking current capabilities
• Integrated protection circuits providing static discharge immunity and transient excess voltage protection

Applications

• High speed data processing logic circuits
• Transmission line driving applications requiring 50 ohm impedance matching
• System interfacing between different logic families such as CMOS and TTL
• Digital control units requiring stable outputs with high noise immunity

Procurement Notes

Verify component authenticity through official manufacturer channels or authorized distributors. Confirm the specific TSSOP-14 package variant matches design requirements. Review the datasheet for absolute maximum ratings to ensure operational safety. Check for RoHS compliance status relevant to the manufacturing batch. Validate that the obsolete product status does not impact long-term availability needs.

Selection Notes

Select this component when interfacing between different logic families is required without level shifting. Consider the 5ns typical propagation delay for timing-sensitive digital designs. Evaluate the 24mA symmetrical drive strength for moderate load conditions. Ensure the operating temperature range of -55°C to 125°C meets environmental specifications. Verify pin compatibility with existing 74 series 02 footprints if replacing legacy designs.

Part Context

This part belongs to the 74ACT series of advanced CMOS logic gates, designed for high-speed digital applications. It is functionally compatible with the standard 74 series 02 quad 2-input NOR gate but offers improved performance characteristics. The TSSOP-14 package allows for surface mount assembly in compact electronic designs. It represents an evolution in CMOS technology focusing on speed and power efficiency.

Replacement Considerations

Check for direct functional equivalents from other manufacturers that maintain pin and function compatibility. Verify that alternative components meet the same voltage and current specifications. Assess package dimensions to ensure mechanical fit in existing assemblies. Confirm electrical characteristics match the original design requirements.