74F161APC

Overview

The onsemi 74F161APC is a synchronous presettable binary counter in the F/FAST logic series. It features a modulo-16 counting sequence with four parallel data inputs and an asynchronous Master-Reset input that forces outputs LOW. The device operates within a supply voltage range of +4.5V to +5.5V and supports a typical count frequency of 120MHz. It utilizes D-type edge-triggered flip-flops for reliable operation and includes Count Enable Parallel (CEP) and Trickle (CET) inputs for multi-stage expansion.

Feature Summary

• Synchronous counting and loading mechanism
• Asynchronous Master-Reset capability
• High-speed synchronous expansion support

Applications

• Programmable frequency dividers
• Synchronous multi-stage counters
• Digital timing circuits

Procurement Notes

Verify component authenticity through official manufacturer channels or authorized distributors. Confirm package integrity and pin alignment against the N16E specification. Ensure storage conditions remain within specified limits to prevent moisture damage prior to soldering.

Selection Notes

Select this component when high-speed synchronous counting is required alongside immediate asynchronous reset functionality. Compare against the 74F163A variant if synchronous reset behavior is preferred over asynchronous clearing. Verify power supply stability within the recommended operating voltage range.

Part Context

This part belongs to the 74F161A/74F163A family of high-speed synchronous binary counters manufactured by Fairchild Semiconductor, now part of onsemi. The F/FAST series provides faster switching speeds compared to standard TTL counterparts while maintaining compatible logic levels.

Replacement Considerations

74F161APC_NL