SNJ54HC163J

Counter Dividers Overview

The SNJ54HC163J is a military-grade, synchronous 4-bit binary counter from the Texas Instruments HC logic family. It features an internal carry look-ahead circuit for high-speed counting applications and operates within a supply voltage range of 2 V to 6 V. The device provides synchronous preset capability and synchronous clear functionality. It is housed in a 16-pin ceramic dual in-line package (CDIP) designed for extended temperature operation between -55°C and +125°C.

Counter Dividers Feature Summary

• Synchronous four-bit binary counting with simultaneous flip-flop clocking to eliminate output spikes
• Internal carry look-ahead circuitry enables high-speed n-bit cascading without external gating
• Fully programmable synchronous preset allows loading any value between zero and fifteen
• Synchronous clear function resets all outputs to zero coincident with the clock edge

Counter Dividers Applications

• High-speed synchronous binary counting circuits
• Frequency division and digital timing systems
• Multi-stage cascaded counter designs requiring fast carry propagation
• Military and aerospace electronic systems operating in extreme temperatures

Counter Dividers Procurement Notes

Verify that the specific orderable part number matches the required military grade specifications and CDIP packaging configuration. Confirm compliance with relevant defense standards and material certifications prior to procurement. Ensure the component meets the necessary environmental testing requirements for the intended operational environment.

Counter Dividers Selection Notes

Select this component when military-grade reliability and wide temperature tolerance are mandatory. The HC series offers low power consumption and standard CMOS compatibility. Consider the CDIP package for through-hole mounting or hermetic sealing requirements typical in ruggedized electronics design.

Counter Dividers Part Context

This device belongs to the SN54HC163 family, which represents the military version of the commercial SN74HC163 counter. The 'SNJ' prefix specifically denotes the ceramic dual in-line package variant. This family is characterized by its synchronous operation and internal carry lookahead capabilities.

Counter Dividers Replacement Considerations

SN54HC163J

Counter Dividers FAQ

How does the internal carry look-ahead improve performance?

It allows multiple counters to be cascaded for n-bit applications without additional external gating, significantly reducing propagation delay compared to ripple-carry methods.

What distinguishes the SNJ54HC163J from the SN74HC163D?

The SNJ54HC163J is a military-grade device in a ceramic package rated for -55°C to +125°C, whereas the SN74HC163D is a commercial-grade plastic SOIC device rated for -40°C to +85°C.