M38510/66302BEA

Counter Dividers Overview

Texas Instruments M38510/66302BEA is a military-grade, synchronous 4-bit binary counter from the SN54HC161 family. It features an internal carry look-ahead circuit for high-speed n-bit cascading applications without additional gating. The device operates with a wide supply voltage range of 2 V to 6 V and supports asynchronous clear and synchronous preset functions. Packaged in a 16-pin ceramic dual in-line (CDIP) format, it is designed for operation across an extended temperature range of -55 °C to 125 °C.

Counter Dividers Feature Summary

• Synchronous counting architecture utilizing simultaneous flip-flop clocking to eliminate output counting spikes associated with ripple-clock counters.
• Internal carry look-ahead logic enables efficient cascading for multi-bit applications by generating a ripple-carry output pulse at maximum count states.
• Fully programmable design allows synchronous presetting to any binary value between zero and fifteen upon the next clock pulse.
• Asynchronous clear function forces all outputs low independently of clock or enable input levels.

Counter Dividers Applications

• High-speed binary counting designs requiring precise timing synchronization
• n-bit cascaded counter systems utilizing internal carry look-ahead
• Military and aerospace electronic systems operating within extreme temperature environments

Counter Dividers Procurement Notes

Verify that the specific part number matches the required military qualification standards and package configuration. Confirm that the ordering suffix corresponds exactly to the intended lead finish and thermal rating specifications. Ensure compatibility with existing system voltage requirements before procurement.

Counter Dividers Selection Notes

Select this component when a synchronous 4-bit binary counter with internal carry look-ahead is required for high-speed digital logic applications. It is suitable for designs needing wide operating voltage flexibility and robust performance under harsh environmental conditions. Consider the CDIP package constraints regarding board space and mounting requirements.

Counter Dividers Part Context

The M38510/66302BEA is a military-qualified version of the commercial SN54HC161 synchronous 4-bit binary counter. Manufactured by Texas Instruments, it adheres to strict MIL-M-38510 reliability standards. This variant ensures consistent performance and durability for critical defense and aerospace electronic applications where standard commercial components are insufficient.

Counter Dividers Replacement Considerations

SNJ54HC161J serves as a direct functional equivalent within the same HC161 family. Verify pinout compatibility and ensure the replacement meets identical military qualification and environmental operating specifications.