STMicroelectronics

HCF4585BEY

HCF4585BEY Description

The HCF4585BEY is a 4-bit magnitude comparator integrated circuit (IC) designed for high-speed digital applications. Manufactured by STMicroelectronics, this IC is part of the 4000B series and is housed in a through-hole package, a specifically tube. It is designed to operate within a wide supply voltage range of 3V to 20V, making it versatile for various power supply configurations.

The HCF4585BEY offers a maximum propagation delay of 160 nanoseconds at 15V with a maximum capacitive load of 50 picofarads. This low propagation delay ensures fast and reliable signal processing, crucial for applications requiring high-speed comparisons. The IC consumes a quiescent current of only 100 microamperes, contributing to its energy efficiency.

The output of the HCF4585BEY is active high, providing clear and distinct signals for A<B, A=B, and A>B comparisons. This feature simplifies the design of digital circuits and enhances the accuracy of comparison operations. The output current capability is 2.4mA for both high and low states, ensuring robust signal drive.

HCF4585BEY Features

• Wide Operating Voltage Range: The HCF4585BEY operates within a supply voltage range of 3V to 20V, offering flexibility in power supply requirements.
• Low Propagation Delay: With a maximum propagation delay of 160ns at 15V and 50pF, this IC ensures rapid signal processing, ideal for high-speed applications.
• Low Quiescent Current: Consuming only 100 µA, the HCF4585BEY is energy-efficient, making it suitable for low-power systems.
• Active High Output: The active high output simplifies circuit design and enhances signal clarity.
• Robust Output Current: The IC provides 2.4mA for both high and low output states, ensuring strong signal drive capabilities.
• Through-Hole Mounting: The through-hole package type facilitates easy integration into printed circuit boards (PCBs) and ensures mechanical stability.
• Compliance and Status: The HCF4585BEY is REACH unaffected and ROHS3 compliant, adhering to environmental and safety standards. It is also classified under ECCN EAR99 and HTSUS 8542.39.0001.

HCF4585BEY Applications

The HCF4585BEY is ideal for applications requiring fast and accurate digital comparisons. Some specific use cases include:

• Digital Systems: Used in digital circuits for comparing binary numbers, facilitating decision-making processes in microcontrollers and digital signal processors.
• Data Processing: Ideal for applications where data needs to be compared and sorted quickly, such as in memory management units and data acquisition systems.
• Control Systems: Utilized in control systems for comparing sensor inputs to reference values, enabling precise control and monitoring.
• Communication Systems: Employed in communication protocols for comparing data integrity and ensuring accurate data transmission.

Conclusion of HCF4585BEY

The HCF4585BEY is a versatile and efficient 4-bit magnitude comparator IC, offering a combination of low propagation delay, low quiescent current, and robust output current. Its wide operating voltage range and active high output make it suitable for a variety of high-speed digital applications. Despite being marked as obsolete, the HCF4855BEY remains a reliable choice for engineers and designers looking for a high-performance comparator in through-hole packaging. Its compliance with environmental and safety standards ensures it meets the requirements of modern electronics manufacturing.