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Product Detailed Parameters
- Description：54F521 8-BIT IDENTITY/MAGNITUDE
- Series：*
- Mfr：Texas Instruments
- Package：Bulk
- Type：-
- Number of Bits：-
- Output：-
- Output Function：-
- Voltage - Supply：-
- Current - Output High, Low：-
- Max Propagation Delay @ V, Max CL：-
- Current - Quiescent (Iq)：-
- Operating Temperature：-
- Package / Case：-
- Supplier Device Package：-
- Mounting Type：-
- Grade：-
- Qualification：-
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Overview
The SNJ54F521J is an octal binary/BCD identity comparator manufactured by Texas Instruments. It features eight independent comparison channels designed to verify equality between two 8-bit digital inputs. The device utilizes a ceramic dual in-line package (CDIP-20) suitable for high-reliability applications. It operates with active-low outputs that indicate when the input vectors are identical. The component is rated for military-grade temperature ranges and supports standard 5V logic supply voltages.
Feature Summary
- Provides eight parallel identity comparison functions for simultaneous data verification
- Generates active-low output signals to indicate exact match conditions between input pairs
- Constructed in a hermetically sealed ceramic package for enhanced environmental protection
Applications
- Military avionics data bus monitoring systems
- Spacecraft telemetry address validation circuits
- High-reliability industrial control logic verification
Procurement Notes
Verify the specific suffix J indicates the ceramic dual in-line package configuration. Confirm the device meets all required military qualification standards for the intended operational environment. Ensure compatibility with existing board layouts requiring CDIP-20 footprints during integration planning.
Selection Notes
Select this component when high reliability and radiation tolerance are critical requirements. The ceramic construction offers superior durability compared to plastic alternatives in harsh environments. Consider the pin count and package dimensions against available board space constraints before finalizing the design.
Part Context
This part belongs to the SN54 series of logic comparators, which are distinguished by their extended temperature ranges and robust packaging. The SNJ54F521J specifically addresses applications requiring precise digital equality checking within defense and aerospace sectors where standard commercial components may fail under extreme conditions.
Replacement Considerations
SN54F521FK is a documented equivalent offering similar functional characteristics. Verify pinout compatibility and electrical specifications before substituting.
