The TC74HC393AF is a high-speed CMOS dual 4-stage binary counter manufactured by Toshiba Semiconductor and Storage. It consists of two independent 4-stage binary counters, each capable of dividing the input frequency by powers of 2. These counters can be cascaded to create counters with larger division ratios. The device is designed for use in frequency dividers, timers, and control circuits where binary counting is required.

Applications

• Frequency Dividers: Used to reduce the frequency of input signals in digital systems.
• Timers: Employed in timing circuits for generating precise time intervals.
• Control Circuits: Implemented in control systems for sequencing and event counting.
• Digital Clocks: Utilized in digital clock circuits as part of the timing mechanism.
• Instrumentation: Used in electronic test and measurement equipment.

Features

• Dual 4-Stage Binary Counter: Contains two independent binary counters in a single IC.
• Divide-by-2, 4, 8, 16 Sections: Each counter can divide the input frequency by powers of 2 up to 16.
• High-Speed Operation: Enables fast counting and frequency division.
• Low Power Dissipation: Consumes minimal power, suitable for battery-powered applications.
• Wide Operating Voltage Range: Operates from 2V to 6V.
• Cascadable: Counters can be cascaded for larger division ratios.

Benefits

• Versatile Counting Options: Provides binary division capabilities for various applications.
• Simplified Circuit Design: Integrates two counters into a single package, saving board space.
• Improved System Performance: High-speed operation ensures accurate counting.
• Extended Battery Life: Low power consumption makes it suitable for portable devices.
• Increased Design Flexibility: Wide operating voltage range allows for use in diverse systems.
• Expandable Counting Range: Counters can be cascaded for higher division ratios.

Additional Details

The TC74HC393AF consists of two identical, independent, 4-stage binary counters. Each counter has a clock input (1CK and 2CK) and a reset input (1MR and 2MR). The counters are incremented on the negative-going transition of the clock input. A HIGH on the reset input forces all outputs to the LOW state. The device is available in a SOIC14 package.