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Product Detailed Parameters
- Description：8 BIT REGISTER WITH CLEAR
- 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：-
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Overview
The JD54LS273BSA is a high-reliability octal D-type flip-flop manufactured by National Semiconductor. It features eight independent D-type flip-flops with common clear inputs, designed for military and aerospace applications requiring extended temperature range operation. The device utilizes LS TTL logic levels and provides complementary outputs for each flip-flop. It is housed in a ceramic flatpack package suitable for harsh environments.
Feature Summary
- Octal configuration with independent data inputs and complementary outputs
- Common asynchronous clear function for all flip-flops
- Military-grade construction for extended temperature reliability
- LS TTL compatible logic levels
Applications
- Military avionics data storage
- Aerospace control systems
- Harsh environment digital logic circuits
Procurement Notes
Verify the manufacturer source carefully as National Semiconductor assets were acquired by Texas Instruments. Ensure the specific suffix 'BSA' matches the required military grade and package specifications. Request full traceability documentation and lot traceability certificates to confirm compliance with original NS military standards or current TI equivalents.
Selection Notes
Select this component when military-grade reliability and extended temperature range are mandatory. Compare pin compatibility and electrical characteristics with modern Texas Instruments equivalents if new production is required. Verify that the LS TTL speed and power consumption meet the system requirements for the specific application environment.
Part Context
This part belongs to the 5400 series of military-grade logic devices produced by National Semiconductor. The 5400 series differs from the commercial 7400 series by offering wider operating temperature ranges and stricter manufacturing controls. The JD54LS273BSA represents the octal D-latch variant within this high-reliability family.
Replacement Considerations
Texas Instruments now holds the rights to National Semiconductor's logic products. Check for TI equivalents such as the SN54LS273BWM or other military-grade octal D-flip-flops. Verify that any substitute maintains the same package footprint and electrical specifications.
