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SNJ54LS390FK is listed in the Counter Dividers range at ChipApex. The manufacturer field lists Texas Instruments. Its product description is 54LS390 DUAL 4-BIT DECADE AND BI. Review the specifications below when checking this part for your BOM.
Counter Dividers specifications for SNJ54LS390FK
- Description：54LS390 DUAL 4-BIT DECADE AND BI
- Series：*
- Mfr：Texas Instruments
- Package：Bulk
- Logic Type：-
- Direction：-
- Number of Elements：-
- Number of Bits per Element：-
- Reset：-
- Timing：-
- Count Rate：-
- Trigger Type：-
- Operating Temperature：-
- Mounting Type：-
- Package / Case：-
- Supplier Device Package：-
- Voltage - Supply：-
- Grade：-
- Qualification：-
Counter Dividers datasheet and documents for SNJ54LS390FK
Counter Dividers Overview
The SNJ54LS390FK is a military-grade dual 4-bit decade and binary counter from Texas Instruments. It operates within a supply voltage range of 4.75 V to 5.25 V and supports an extended operating temperature range from -55 °C to +125 °C. The device utilizes LS logic series technology and features asynchronous counting modes with negative edge triggering for the decade section and positive edge triggering for the binary section. It is housed in a 20-pin LCCC (FK) package.
Counter Dividers Feature Summary
- Dual independent counters providing both divide-by-10 and divide-by-2 capabilities
- Military-grade construction certified for harsh environments
- Asynchronous operation with distinct trigger edges for different sections
Counter Dividers Applications
- Military and defense electronic systems
- Space-based applications requiring radiation tolerance
- High-reliability industrial control circuits
Counter Dividers Procurement Notes
Verify that the specific orderable part number matches the required package variant, as the FK suffix denotes the LCCC package. Confirm RoHS compliance status and lead finish details against the latest Package Option Addendum. Ensure the procurement channel sources QML certified parts if military qualification is strictly required by the system specification.
Counter Dividers Selection Notes
Select this component when a dual decade/binary counter is needed for military or space applications. The LCCC package offers hermetic sealing suitable for extreme temperatures. Compare pin counts and trigger polarities against other LS series counters to ensure compatibility with existing circuit designs and timing requirements.
Counter Dividers Part Context
This part belongs to the SN54LS390 family, which includes variants like SNJ54LS390J and SNJ54LS390W. These devices are classified under Military and Space qualified versions. The family provides dual 4-bit counters, distinguishing it from single-counter counterparts in the broader SN54/74LS series catalog.
Counter Dividers Replacement Considerations
SNJ54LS390J
Counter Dividers FAQ
What is the trigger polarity for the decade counter section?
The decade counter section is triggered on the negative edge.
Is the SNJ54LS390FK suitable for space applications?
Yes, the SN54LS390 family includes space-qualified versions characterized for radiation tolerance and ceramic packaging.
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