STMicroelectronics M74HC393M Dual Binary Counter

The M74HC393M is a high-speed CMOS Dual 4-Stage Binary Ripple Counter fabricated with silicon gate C2MOS technology from STMicroelectronics. This integrated circuit is designed to operate with a supply voltage range of 2V to 6V, making it suitable for battery-operated devices and low-power applications. Its primary function is to divide the frequency of an input signal by two, sequentially, for each flip-flop.

The device features two independent counters, each comprising a divide-by-two section and a divide-by-eight section, which can be connected in series to provide a divide-by-sixteen function. The counters advance on the falling edge (negative transition) of the input clock signal, providing precise timing and frequency division. The M74HC393M is characterized by its high noise immunity and low power consumption, typical of CMOS integrated circuits.

Key Features:

• Supply Voltage Range: 2V to 6V, accommodating a variety of power sources and ensuring compatibility with both TTL and CMOS logic levels.
• High-Speed Operation: Ensures reliable performance in fast-paced applications where timing is critical.
• Low Power Dissipation: With a typical value of 20µA (max 40µA) at 25°C, it is an energy-efficient choice for portable and power-sensitive devices.
• High Noise Immunity: Provides stable operation in environments with electrical noise, enhancing the reliability of the device.
• Dual Counters: The inclusion of two independent 4-stage counters allows for greater flexibility in application design.
• Standard Pin Configuration: The M74HC393M comes in a SO-14 package, which is widely used and convenient for PCB design and layout.

Applications for the M74HC393M are diverse, including but not limited to, frequency division, time delay generation, and as part of counters or timers in consumer electronics, automotive, telecommunications, and control systems. Its robustness and reliability make it an excellent choice for designers looking for a dependable binary counter solution.

STMicroelectronics provides detailed datasheets and technical support to ensure ease of integration and to assist in the development of applications utilizing the M74HC393M.