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Product Detailed Parameters
- Description：54L73 - DUAL JK FLIP-FLOP
- Series：*
- Mfr：National Semiconductor
- Package：Bulk
- Function：-
- Type：-
- Output Type：-
- Number of Elements：-
- Number of Bits per Element：-
- Clock Frequency：-
- Max Propagation Delay @ V, Max CL：-
- Trigger Type：-
- Current - Output High, Low：-
- Voltage - Supply：-
- Current - Quiescent (Iq)：-
- Operating Temperature：-
- Mounting Type：-
- Supplier Device Package：-
- Package / Case：-
- Input Capacitance：-
- Grade：-
- Qualification：-
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Overview
The JD54L73BCA is a dual negative-edge-triggered master-slave J-K flip-flop manufactured by National Semiconductor. It features independent clear and complementary outputs for each flip-flop within the package. The component is designed for military-grade performance, ensuring reliability in demanding environments through strict manufacturing controls and material specifications consistent with the 54L series standards.
Feature Summary
- Dual configuration providing two independent J-K flip-flops in a single package
- Negative-edge-triggered operation for precise timing control
- Master-slave architecture to prevent race-around conditions
- Military-grade construction for enhanced environmental stability
Applications
- Military aerospace data processing systems
- High-reliability digital logic circuits
- Spacecraft telemetry and command registers
- Avionics state storage applications
Procurement Notes
Verify that the supplier provides full traceability documentation, including lot codes and manufacturer certificates of compliance. Ensure the components meet the specific military quality standards required for your application. Request detailed inspection reports to confirm physical integrity and electrical conformity before acceptance.
Selection Notes
Select this component when dual independent flip-flops are required in a military-grade environment. Consider the package type and pinout compatibility with existing board layouts. Evaluate thermal management requirements and ensure the supply chain can provide verified military-specification units with appropriate testing records.
Part Context
This part belongs to the 54L series of high-speed low-power Schottky logic devices produced by National Semiconductor. The 54 series denotes military qualification, distinguishing it from commercial variants. The JD suffix typically indicates a specific package style or lead finish variant within the broader 54L73 family.
Replacement Considerations
Direct replacements include other military-qualified dual J-K flip-flops such as the DM54L73 or equivalent parts from manufacturers like Texas Instruments or Raytheon. Verify pin compatibility and electrical characteristics before substitution.
