CD54HC4040F [Texas Instruments]

The HC4040 and HCT4040 are 14-stage ripple-carry binary counters with fully static operation, buffered inputs, and common reset. They feature negative edge pulsing, high fanout (10 LSTTL loads for standard outputs, 15 LSTTL loads for bus driver outputs), and wide operating temperature range from -55°C to 125°C. HC types operate from 2V to 6V with high noise immunity, while HCT types operate from 4.5V to 5.5V with direct LSTTL input logic compatibility and CMOS input compatibility. They offer balanced propagation delay and transition times and significant power reduction compared to LSTTL logic ICs.