Texas Instruments CD54HCT4020 High Speed CMOS Logic 14-Stage Binary Counter CD54HCT4020F3A

The CD54HCT4020F3A is a 14-stage binary counter designed for high-speed CMOS logic applications. It operates with a wide voltage range of 4.5 V to 5.5 V and is compatible with LSTTL logic levels, making it suitable for interfacing with various digital systems. The device features fully static operation, buffered inputs, and a common reset function, allowing for reliable performance in counting applications. This counter utilizes negative edge clocking, advancing its state on the falling edge of the clock signal. It supports a fanout of 10 LSTTL loads for standard outputs and 15 LSTTL loads for bus driver outputs, ensuring versatility in circuit design. The CD54HCT4020F3A operates effectively across a temperature range of -55¬8C to 125¬8C, providing robustness for use in diverse environments. Its balanced propagation delay and transition times contribute to efficient operation, while the significant power reduction compared to LSTTL logic ICs enhances energy efficiency in applications.