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74VHC161SJ

74VHC161SJ Description

The 74VHC161SJ is a high-speed, 4-bit synchronous binary counter from Fairchild Semiconductor (now onsemi), designed for 2 V to 5.5 V voltage supply ranges. Part of the 74VHC series, this IC operates at a count rate of 125 MHz, making it suitable for high-performance digital systems. It features positive-edge triggering, synchronous counting, and an asynchronous reset for flexible control. The device is packaged in a 16-SOP (Small Outline Package) and is RoHS3 compliant, adhering to modern environmental standards.

74VHC161SJ Features

• High-Speed Operation: Supports 125 MHz counting for rapid data processing.
• Wide Voltage Range: Operates from 2 V to 5.5 V, compatible with TTL and CMOS logic levels.
• Synchronous Design: Ensures precise timing with clocked counting.
• Asynchronous Reset: Immediate counter clearing independent of the clock signal.
• Up Counter Direction: Simplifies incrementing applications.
• Low Power Consumption: Optimized for energy-efficient designs.
• Surface-Mount Package: 16-SOP for compact PCB integration.

74VHC161SJ Applications

• Digital Frequency Dividers: Ideal for clock division in microcontrollers and FPGAs.
• Event Counters: Used in industrial automation and instrumentation.
• Sequential Logic Circuits: Suitable for state machines and control systems.
• Consumer Electronics: Embedded in smart devices for timing and counting functions.
• Automotive Systems: Reliable performance in harsh environments due to robust voltage tolerance.

Conclusion of 74VHC161SJ

The 74VHC161SJ offers a blend of high-speed performance, low power consumption, and versatile voltage compatibility, making it a strong choice for modern digital designs. While now obsolete, its legacy in synchronous counting applications remains relevant for legacy system maintenance or specific high-reliability use cases. Engineers seeking alternatives should consider onsemi's newer VHC series offerings with enhanced features.