SNJ54S163J

Overview

The SNJ54S163J is a synchronous 4-bit binary counter manufactured by Texas Instruments. It operates within a military-grade temperature range of -55°C to 125°C and utilizes a 16-pin ceramic dual in-line package (CDIP). The device functions as a positive-edge triggered counter with a maximum operating frequency of 65 MHz at nominal supply voltage. It features a load capacitance specification of 50 pF and supports up to 20 mA output current. The component is classified under the S series logic family.

Feature Summary

• Synchronous 4-bit binary counting operation
• Military-grade wide temperature capability
• Ceramic dual in-line packaging for reliability

Applications

• High-speed digital counting systems
• Military aerospace electronic circuits
• Industrial control logic timing

Procurement Notes

Verify the specific suffix J indicates ceramic DIP construction. Confirm RoHS compliance status as historical data suggests non-compliance. Ensure the supplier provides traceability documentation suitable for defense or high-reliability sectors. Validate that the part matches the exact SNJ54S163J designation rather than commercial variants.

Selection Notes

Select this component when military environmental ratings are mandatory. The CDIP package offers superior thermal and mechanical stability compared to plastic alternatives. Verify interface compatibility with existing synchronous logic families. Consider the 65 MHz speed limit for system clock requirements.

Part Context

This part belongs to the Texas Instruments 54-series logic family, designed for harsh environments. The 'S' denotes Schottky technology for speed, while 'J' specifies the ceramic package. It serves as a robust alternative to commercial plastic-packaged counters in critical applications.

Replacement Considerations

SNJ54AS161J is a related synchronous counter but differs in specific control features. SNJ54S163J is functionally similar to SN54S163J but with certified military temperature grading.