SNJ54390J

Counter Dividers Overview

The SNJ54390J is a dual counter integrated circuit from the Texas Instruments SN54 series. It contains two independent counters: one 4-bit binary counter and one decade (divide-by-10) counter. The device operates in asynchronous mode with negative edge triggering. It is housed in a 16-pin ceramic dual in-line package (CDIP-16). The component supports load/preset inputs for functional control. It is rated for an extended temperature range of -55 °C to 125 °C, suitable for military or industrial applications.

Counter Dividers Feature Summary

• Dual independent counter architecture combining a 4-bit binary counter and a decade counter within a single package.

Counter Dividers Applications

• Military-grade digital counting systems requiring high reliability.

Counter Dividers Procurement Notes

Verify the specific manufacturer source, as this part may be distributed by authorized partners like Rochester Electronics rather than direct Texas Instruments production. Confirm the package integrity and hermetic seal status for CDIP-16 specifications. Ensure the datasheet matches the exact SNJ54390J designation to avoid confusion with similar SN54 series variants.

Counter Dividers Selection Notes

Select this component when a design requires both binary and decimal counting functions in a space-constrained environment. The SNJ54390J is appropriate for systems demanding wide temperature tolerance and asynchronous operation. Consider the 16-pin CDIP footprint during PCB layout planning.

Counter Dividers Part Context

This component belongs to the SN54 logic family, which is characterized by its robust construction for harsh environments. The 'J' suffix indicates a ceramic DIP package. It serves as a specialized solution for complex timing and sequencing tasks where mixed radix counting is necessary without using multiple discrete chips.

Counter Dividers Replacement Considerations

Public confirmed substitute part numbers are not available in the provided documentation.