The HCF4028BE is a versatile integrated circuit manufactured by STMicroelectronics, designed to serve as a BCD-to-Decimal or Binary-to-Octal decoder. This monolithic chip is a vital component in digital systems where it is necessary to convert binary coded data into a format that can be easily displayed or further processed.

Key Features

• Decoding Capability: The HCF4028BE can decode 4-bit BCD (Binary Coded Decimal) to a 10-line decimal output as well as 3-bit binary to an 8-line octal output.
• High Voltage Type: This device can operate at a wide range of voltages, from 3V to 18V, making it suitable for various applications, from low-voltage portable equipment to high-voltage industrial machines.
• Medium Speed Operation: It offers a typical propagation delay of 16ns when operating at 10V, ensuring reasonable performance for medium-speed applications.
• Standardized Symmetrical Output Characteristics: The outputs are designed to have standardized characteristics with 50 Ohm transmission lines, ensuring consistent performance.
• High Noise Immunity: The HCF4028BE boasts a 45% V_NN noise immunity, which is advantageous in electrically noisy environments.
• Output Drive Capability: It can drive up to 10 LSTTL loads, providing the ability to interface with various types of logic families.

Applications

The HCF4028BE is widely used in digital systems that require decoding functions. Some common applications include:

• 7-segment display decoding
• Address decoding for memory and I/O
• Control systems for industrial processes
• Electronic voting machines
• Instrumentation and measurement systems

Package and Quality

The device is available in a 16-pin dual in-line package (DIP), which makes it easy to integrate into a wide variety of circuit boards. STMicroelectronics ensures high-quality standards, and the HCF4028BE is no exception, undergoing rigorous testing to maintain reliability and performance over its operational lifespan.