STMicroelectronics

M74HC4040B1R

M74HC4040B1R Description

The M74HC4040B1R from STMicroelectronics is a high-speed 12-bit binary counter designed for precision timing and frequency division applications. Operating within a 2V to 6V supply range, this 74HC-series IC delivers robust performance with a 70 MHz count rate, making it suitable for high-frequency digital systems. Its negative-edge triggering ensures reliable synchronization, while the asynchronous reset allows immediate counter clearing without clock dependency. Packaged in a 16-pin DIP (Through Hole), it is ideal for prototyping and industrial applications requiring stable, long-term performance.

M74HC4040B1R Features

• 12-Bit Resolution: Provides extensive counting range for complex timing tasks.
• High-Speed Operation: 70 MHz count rate outperforms many standard binary counters.
• Wide Voltage Range (2V–6V): Compatible with TTL and CMOS logic levels.
• Asynchronous Reset: Enables immediate counter initialization independent of the clock.
• Negative-Edge Triggering: Ensures precise timing alignment in synchronous systems.
• ROHS3 Compliant & REACH Unaffected: Meets environmental and safety standards.
• Through-Hole Mounting (DIP): Simplifies integration in breadboards and legacy systems.

M74HC4040B1R Applications

• Frequency Dividers: Ideal for clock division in microcontrollers and DSPs.
• Digital Timers: Used in industrial automation and instrumentation.
• Event Counters: Tracks pulses in encoders or sensor interfaces.
• Sequential Logic Systems: Integrates into state machines and control circuits.
• Retro Computing: Compatible with vintage digital systems due to DIP packaging.

Conclusion of M74HC4040B1R

The M74HC4040B1R stands out for its high-speed 12-bit counting, wide voltage tolerance, and asynchronous reset capability, making it a versatile choice for timing-critical applications. While marked obsolete, its through-hole design and 70 MHz performance ensure continued relevance in prototyping, education, and maintenance of legacy systems. Engineers value its reliability in frequency division and digital timing, solidifying its role in both modern and historical electronic designs.