54ACTQ02/Q2A

Overview

The 54ACTQ02/Q2A is a high-performance quadruple 2-input NOR gate manufactured by Rochester Electronics, LLC. It belongs to the 54ACTQ logic family, designed for military and aerospace applications requiring extended temperature ranges. The device operates within a supply voltage range of 4.5V to 5.5V. Key electrical parameters include a maximum static current of 2µA and output drive capabilities of 24mA for both high and low states. Propagation delay is specified at 7.5ns at 5V with a 50pF load. It supports an operating temperature range from -55°C to 125°C and is available in ceramic packages such as CDIP-14 or SOJ-14.

Feature Summary

• Military-grade reliability with extended temperature operation suitable for harsh environments
• High-speed switching performance with low propagation delay characteristics
• Robust output drive capability supporting direct interface to TTL loads
• Low power consumption with minimal static current draw during steady state

Applications

• Military avionics signal processing circuits
• Aerospace communication system logic interfaces
• Ruggedized industrial control logic gates
• Spacecraft onboard data handling systems

Procurement Notes

Verify the specific suffix code (e.g., /Q2A) against the manufacturer's official datasheet to confirm package type and environmental compliance. Ensure the component lot date aligns with project requirements for long-term availability. Request full traceability documentation including material declarations and test reports. Confirm that the supplier provides genuine parts with original markings. Validate compatibility with existing board designs regarding pinout and thermal management specifications.

Selection Notes

Select this component when designing systems requiring radiation tolerance and wide temperature stability. Compare propagation delays against standard commercial variants if cost is a secondary factor. Ensure the chosen package variant fits the mechanical constraints of the enclosure. Verify that the 5V logic levels match the rest of the system architecture. Consider the higher unit cost relative to commercial equivalents due to military qualification standards.

Part Context

This part is part of the 54-series logic family, historically associated with military specifications. Rochester Electronics specializes in sourcing and distributing obsolete and hard-to-find semiconductors. The 54ACTQ series represents advanced technology with Schottky clamping for improved speed and noise immunity compared to older bipolar technologies.

Replacement Considerations

Direct substitutes may include other 54ACTQ02 variants from different manufacturers offering equivalent military specifications. Verify pin compatibility and electrical parameters before substitution. Commercial equivalents like SN74ACT02 lack the required temperature range and reliability ratings.