STMicroelectronics M74HC393M1R Dual Binary Counter

The M74HC393M1R is a high-speed CMOS Dual 4-Bit Binary Ripple Counter manufactured by STMicroelectronics, designed to operate in a wide range of applications from industrial to consumer electronics. This integrated circuit is part of the HC family, which ensures a robust performance with the benefit of low power consumption.

Featuring two independent counters, the M74HC393M1R can be utilized in a variety of configurations, such as frequency division, time delay generation, and event counting. Each counter advances on the falling edge of the clock signal, providing precise timing and control. The counters are fully resettable; the clear function is asynchronous, allowing for the counters to be reset regardless of the clock input.

The device is housed in an SO-14 package, which is a small outline package that is suitable for surface-mounted technology (SMT). This compact form factor makes the M74HC393M1R an excellent choice for space-constrained applications. Moreover, its pin configuration is designed for optimal signal routing, reducing the chances of cross-talk and ensuring stable operation.

Key specifications of the M74HC393M1R include:

• Supply Voltage Range: 2V to 6V
• High Noise Immunity: VNIH = VNIL = 28% VCC (Min.)
• Low Power Dissipation: ICC = 4 μA (Max.) at TA = 25°C
• High Speed: fMAX = 63 MHz (Typ.) at VCC = 5V
• Low Input Current: 1 μA (Max.)
• Output Drive Capability: 10 LSTTL Loads

The device's compatibility with LSTTL outputs also allows for easy interfacing with other logic families, making it a versatile choice for system design. The M74HC393M1R is characterized for operation from -55°C to +125°C, ensuring reliable performance in extreme conditions.

With its dual counter design, the M74HC393M1R from STMicroelectronics is an essential component for designers looking for a reliable, high-performance binary counter. Whether it's used in timing circuits, system clocks, or as part of a more complex digital system, this IC offers the precision and durability needed for demanding applications.