CD74HC4024M [Texas Instruments]

The 'HC4024 and 'HCT4024 are 7-stage ripple-carry binary counters. All counter stages are flip-flops. The state of the stage advances one count on the negative transition of each input pulse; a high voltage level on the MR line resets all counters to their zero state. All inputs and outputs are buffered. These devices feature fully static operation, buffered inputs, common reset, negative edge clocking, and fanout of 10 LSTTL loads (standard outputs) and 15 LSTTL loads (bus driver outputs). They operate over a wide temperature range of -55°C to 125°C and offer balanced propagation delay and transition times. The HC types operate from 2 V to 6 V and have high noise immunity, while the HCT types operate from 4.5 V to 5.5 V and are directly compatible with LSTTL input logic.