MM74HC161MX

Counter Dividers Overview

The MM74HC161MX is a synchronous presettable 4-bit binary counter manufactured by Fairchild Semiconductor. It utilizes advanced silicon-gate CMOS technology and incorporates internal look-ahead carry logic to support high-speed counting applications. The device features positive edge triggering for all flip-flops, ensuring simultaneous clocking on the LOW-to-HIGH transition of the input waveform. It operates within a wide power supply range of 2V to 6V, offering low quiescent current and high noise immunity comparable to low-power Schottky TTL standards.

Counter Dividers Feature Summary

• Synchronous presettable architecture with internal look-ahead carry logic
• Positive edge-triggered operation for simultaneous flip-flop clocking
• Advanced silicon-gate CMOS construction for high noise immunity
• Wide operating voltage range supporting diverse system requirements

Counter Dividers Applications

• High-speed digital counting circuits
• Programmable frequency dividers
• Time-base generation systems
• Digital sequence control logic

Counter Dividers Procurement Notes

Verify the manufacturer designation as Fairchild Semiconductor or its successor entities during sourcing. Confirm the package type matches the required surface-mount configuration. Ensure the component grade aligns with the intended operational temperature range. Cross-reference the specific suffix codes against official datasheets to validate functional equivalence and pinout compatibility before integration into designs.

Counter Dividers Selection Notes

Select this component when synchronous loading and high-speed performance are required in a CMOS environment. The internal look-ahead carry logic makes it suitable for cascading multiple counters without significant propagation delay accumulation. Consider the 2V to 6V supply range for flexibility in interfacing with various logic families. Evaluate the positive edge-triggered nature against system clocking strategies to ensure proper timing alignment.

Counter Dividers Part Context

This part belongs to the 74HC series of logic integrated circuits, which are standard complementary metal-oxide-semiconductor devices. The 74HC161 variant specifically provides four-bit binary counting capabilities with parallel load functionality. It is distinct from asynchronous clear variants and offers superior speed characteristics compared to older logic families while maintaining low power consumption typical of modern CMOS technologies.

Counter Dividers Replacement Considerations

Equivalent parts include MM74HC163M for synchronous clear operations. Other compatible options may involve checking cross-manufacturer equivalents from Texas Instruments or ON Semiconductor that adhere to the same 74HC logic family specifications and pin configurations.