onsemi Counters, Dividers MC74HC4020ANG

The MC74HC4020A is a 14-stage binary ripple counter designed with high-performance silicon-gate CMOS technology. It features a pinout compatible with the standard CMOS MC14020B and can interface directly with CMOS, NMOS, and TTL outputs. The device consists of 14 master-slave flip-flops, with 12 stages available at the output, where each output frequency is half that of the preceding one. It has an asynchronous active-high reset function. This counter operates within a voltage range of 2.0 to 6.0 V and has a low input current of 1 µA, making it suitable for low-power applications. The device can drive up to 10 LSTTL loads and is compliant with JEDEC Standard No. 7A. It is also AEC-Q100 qualified, making it suitable for automotive applications. The MC74HC4020A is available in Pb-free, halogen-free, and RoHS-compliant packages, ensuring environmental safety. Engineers should consider this product for applications requiring reliable counting functionality with low power consumption and compatibility with various logic families. However, care should be taken regarding internal ripple delays, which may necessitate additional gating for decoded output signals in certain designs.