Ernest D Haacke

Title: Innovations of Ernest D. Haacke

Introduction

Ernest D. Haacke is a notable inventor based in Westbrook, ME (US). He has made significant contributions to the field of electronics, particularly in the design of circuits for output buffers. With a total of 3 patents, his work has had a lasting impact on the industry.

Latest Patents

One of Haacke's latest patents is the "Power down Miller Killer circuit." This circuit is designed to be used with bistate and tristate output buffers to divert the output pulldown transistor Miller Current when the output buffer is powered down. The innovation aims to prevent loading on the common bus, especially when other output buffers are causing transitions. The preferred embodiment utilizes a MOS transistor to control the Miller Current Discharge Transistor, ensuring it activates only when the buffer is powered down.

Another significant patent is the "State-dependent discharge path circuit." This circuit is intended for tristate output buffers and provides fast discharge of the output pulldown transistor base while protecting against reverse breakdown. The innovation features two discharge paths to ground for the base of the output pullup transistor, with a low-capacitance path activated during the active mode of the buffer. This design incorporates reverse breakdown protection through voltage drop devices.

Career Highlights

Ernest D. Haacke has worked at National Semiconductor Corporation, where he has been able to apply his innovative ideas in practical applications. His contributions have enhanced the performance and reliability of electronic circuits.

Collaborations

Throughout his career, Haacke has collaborated with notable coworkers such as Roy L. Yarbrough and James R. Ohannes. These collaborations have likely contributed to the development of his innovative patents.

Conclusion

Ernest D. Haacke's work in circuit design has led to significant advancements in the field of electronics. His patents reflect a deep understanding of the challenges faced in output buffer technology and provide effective solutions. His contributions continue to influence the industry today.