MM74HC161N

Counter Dividers Overview

The MM74HC161N is a synchronous presettable 4-bit binary counter manufactured by Fairchild Semiconductor. It utilizes advanced silicon-gate CMOS technology and features internal look-ahead carry logic for high-speed counting applications. The device operates on a positive edge-triggered clock input, allowing all flip-flops to be clocked simultaneously. It supports parallel data loading via a low-level parallel enable input and includes an asynchronous master reset function that clears outputs regardless of other control signals.

Counter Dividers Feature Summary

• Synchronous presettable 4-bit binary counting with internal look-ahead carry logic
• Positive-edge triggered clocking for simultaneous flip-flop operation
• Asynchronous master reset capability independent of clock or enable states

Counter Dividers Applications

• High-speed digital counting circuits
• Frequency division networks
• Digital timing sequences

Counter Dividers Procurement Notes

Verify the manufacturer designation as Fairchild Semiconductor or its successor entities during acquisition. Confirm the package type matches the required DIP-14 configuration. Ensure the component meets the specified HC series electrical characteristics. Validate authenticity through authorized distribution channels to avoid counterfeit components.

Counter Dividers Selection Notes

Select this component when synchronous 4-bit binary counting with parallel load capability is required. The HC series offers CMOS noise immunity and low power consumption suitable for general-purpose logic applications. Consider the asynchronous reset feature for immediate system clearing needs without waiting for clock cycles.

Counter Dividers Part Context

This part belongs to the 74HC logic family, which provides high-speed operation comparable to low-power Schottky TTL while maintaining CMOS advantages. The MM74HC161N is distinct from the MM74HC163 primarily in its reset mechanism; the 161 uses asynchronous clear, whereas the 163 typically employs synchronous clear.

Counter Dividers Replacement Considerations

The MM74HC163 serves as a functional substitute if synchronous reset behavior is acceptable instead of asynchronous. Other 74HC161 variants from different manufacturers may be compatible provided they adhere to the same pinout and electrical specifications.