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SNJ54ALS27FK is listed in the Inverter Gates range at ChipApex. The manufacturer field lists Texas Instruments. Its product description is IC GATE NOR. Review the specifications below when checking this part for your BOM.
The SNJ54ALS27FK is a military-grade logic component manufactured by Texas Instruments, belonging to the ALS (Advanced Low-power Schottky) series. It features three independent 3-input NOR gates housed in a 16-pin Ceramic Dual In-Line Package (CDIP). The device operates within a supply voltage range of 4.5 V to 5.5 V and supports an extended industrial temperature range from -55°C to +125°C. Key electrical characteristics include a propagation delay of 15 ns at 50 pF load, a low-level output current capability of 24 mA, and a high-level output current of -800 uA.
Verify the specific suffix 'FK' against official Texas Instruments documentation to confirm the exact pinout and package dimensions for the 16-CDIP variant. Ensure that procurement specifications explicitly require the military-grade ceramic construction rather than standard plastic packages. Cross-reference the datasheet revision history to confirm compatibility with existing design files.
Select this component when designing for environments exceeding standard commercial temperature limits or requiring hermetic sealing. The ALS series offers a balance of speed and power dissipation superior to standard TTL. Confirm that the system power budget accommodates the static and dynamic current requirements specified in the electrical characteristics table.
This part belongs to the SN54ALS27 family of triple 3-input NOR gates. The SN54 series designation indicates military-grade qualification, distinguishing it from the SN74 commercial grade. The FK suffix typically denotes a specific ceramic dual-in-line package configuration used in high-reliability applications.
Direct substitutes include other military-grade ALS NOR gates such as the SN54ALS27AJ or SN54ALS27FC, provided the package style matches. Verify pin-to-pin compatibility before substitution.
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