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The 54F273/QSA is a high-speed CMOS D-type flip-flop manufactured by Rochester Electronics. It features eight independent D-type flip-flops with positive-edge triggering and true outputs. The device operates within a supply voltage range of 2V to 6V and supports data rates up to 80MHz. It includes an asynchronous active-low master reset input. The component is housed in a 20-pin ceramic dual in-line package (CDIP) designed for military and aerospace reliability standards.
Verify the specific suffix QSA against the original manufacturer's datasheet to confirm pinout compatibility and electrical characteristics. Ensure the ceramic package integrity meets MIL-PRF-38535 requirements. Request batch-specific test reports to validate performance against original specifications. Confirm RoHS status if required for specific assembly processes. Validate supplier authorization for military-grade components.
Select this component when eight-bit parallel data storage with positive-edge triggering is required in radiation-hardened or high-reliability applications. The CDIP package offers superior thermal and mechanical stability compared to plastic variants. Consider the asynchronous reset feature for system initialization needs. Evaluate power consumption constraints as CMOS technology varies with supply voltage. Ensure interface timing matches the target system clock frequencies.
This part belongs to the SN54F273 family, originally designed by Texas Instruments. Rochester Electronics provides lifecycle support for obsolete military-grade logic components. The 54-series designation indicates military temperature range and reliability standards. This specific variant maintains the original functional integrity while ensuring long-term availability for defense and aerospace programs requiring certified heritage parts.
Direct replacements include other SN54F273 variants from qualified manufacturers. Verify package dimensions and pin assignments before substitution. Cross-reference electrical parameters such as propagation delay and supply current. Ensure environmental qualification levels match the original design requirements.