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Product Detailed Parameters
- Description：54LS682 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 SNJ54LS682W is an 8-bit magnitude and identity comparator manufactured by Texas Instruments. It operates within a military-grade temperature range of -55°C to 125°C and utilizes a 20-lead Ceramic Flat Pack (CFP) package. The device provides outputs for A=B and A>B conditions with inverted polarity. It features pull-up resistors on the B inputs and supports a supply voltage range typical for LS logic, with a maximum propagation delay of 25 ns.
Feature Summary
- Provides 8-bit magnitude comparison capabilities with identity detection
- Includes internal pull-up resistors on B inputs for simplified interfacing
- Delivers inverted A=B and A>B output signals
- Rated for extended military temperature operation from -55°C to 125°C
Applications
- Military avionics systems requiring high reliability
- Industrial control units operating in extreme environments
- Data acquisition systems performing binary comparisons
- Test and measurement equipment needing precise magnitude evaluation
Procurement Notes
Verify the specific ordering suffix matches the required package type and temperature grade. Confirm RoHS compliance status as leaded options exist. Ensure the supplier provides traceability documentation suitable for military or aerospace procurement requirements. Check for active production status versus obsolescence notices before finalizing orders.
Selection Notes
Select this component when 8-bit comparison is required in harsh thermal environments. The ceramic flat pack offers superior hermetic sealing compared to plastic packages. Consider the inverted output polarity when designing interface logic. Verify power supply constraints align with LS logic specifications.
Part Context
This part belongs to the SN54LS682 family of 8-bit magnitude comparators. It shares functional compatibility with other LS series devices but differs in packaging and environmental rating. The SNJ prefix indicates a specific military qualification level distinct from commercial variants.
Replacement Considerations
SN54LS682W serves as a direct functional equivalent. SNJ54LS682J offers identical functionality in a dual-in-line package. Verify pinout compatibility and thermal performance when substituting.
