STMicroelectronics M74HC390B1R Dual Decade Ripple Counter

The M74HC390B1R is a high-speed CMOS dual decade ripple counter fabricated with silicon gate C2MOS technology from STMicroelectronics. It integrates two independent decade counters in a single package, making it a versatile solution for a wide range of counting applications. This integrated circuit is designed to interface with standard logic families and is particularly suitable for use in time-delay circuits and counting operations in various electronic devices.

Key Features:

• Technology: The device is built using advanced silicon gate C2MOS technology which ensures low power consumption and high noise immunity characteristic of CMOS integrated circuits.
• Counting Capability: It includes two 4-bit binary counters with separate clocks and reset inputs for each counter. The counters can be cascaded easily for various counting sequences.
• Operating Voltage: It operates on a wide range of supply voltages from 2V to 6V, making it compatible with a variety of logic families and power requirements.
• High-Speed Performance: The device is capable of high-speed operation, with typical clock frequency up to 32MHz at Vcc = 5V.
• Output Drive Capability: With the ability to drive up to 10 LSTTL loads, the M74HC390B1R is capable of handling significant output loads.
• Low Power Consumption: Its low power consumption includes a typical quiescent current specification of 20nA, making it ideal for battery-operated applications.
• Package: The M74HC390B1R comes in a DIP-16 (Dual In-line Package) and SOP-16 (Small Outline Package), providing flexibility in hardware design and PCB layout.

Applications:

The versatility of the M74HC390B1R allows it to be used in a broad array of applications, including:

• Frequency dividers and counters
• Time-delay circuits
• Digital clocks and watches
• Computers and peripherals
• Instrumentation and measurement systems

In summary, the STMicroelectronics M74HC390B1R offers reliable performance for digital counting applications, with its dual decade counter design, low power consumption, and compatibility with various logic levels. Its robust feature set makes it an excellent choice for designers looking for a dependable and flexible counting solution.