The TC74HC4520AF is a high-speed CMOS dual binary counter manufactured by Toshiba Semiconductor and Storage. This integrated circuit (IC) features two independent 4-stage binary counters within a single package, providing versatile counting capabilities for various digital logic applications. It operates within a wide voltage range and offers low power consumption, making it suitable for battery-powered and energy-efficient designs.

Applications

• Frequency dividers
• Timers and counters
• Digital clocks
• Control circuits
• Instrumentation

Features

• High-speed operation: fmax = 45 MHz (typ.) at VCC = 5V
• Low power consumption: ICC = 4 μA (max.) at Ta = 25°C
• Wide operating voltage range: VCC = 2V to 6V
• Dual 4-stage binary counters
• Independent clock and reset inputs for each counter
• Synchronous counting operation
• JEDEC standard outputs
• Operating temperature range: -40°C to +85°C

Benefits

• Versatile counting capabilities with two independent counters.
• High-speed operation allows for use in demanding applications.
• Low power consumption extends battery life in portable devices.
• Wide operating voltage range provides flexibility in system design.
• Easy integration with other digital logic components due to JEDEC standard outputs.
• Reliable performance over a wide temperature range.

Additional Details

The TC74HC4520AF comes in a SOP-16 (Small Outline Package) which allows for space-saving on printed circuit boards. Each counter increments on the positive-going transition of its clock input signal, provided the enable input is in the correct state. A HIGH level on the reset input clears the counter to its zero state, independent of the clock or enable inputs. The device utilizes CMOS technology, ensuring high noise immunity and stable operation.

The supply voltage range is typically between 2V and 6V, with recommended operating conditions specified in the datasheet. The maximum clock frequency can vary depending on the supply voltage and operating temperature. The device is designed to be compatible with other HC series logic devices.