74HC390 Datasheet - nexperia

74HC390 Dual decade ripple counter

The 74HC390; 74HCT390 is a dual 4-bit decade ripple counter divided into four separately clocked sections. The counters have two divide-by-2 sections and two divide-by-5 sections. These sections share an asynchronous master reset input (nMR) and can be used in a BCD decade or bi-quinary configuratio.

74HC390 Features

* Input levels:

* For 74HC390: CMOS level

* For 74HCT390: TTL level

* Two BCD decade or bi-quinary counters

* One device can be configured to divide-by-2, 4, 5, 10, 20, 25, 50 or 100

* Two master reset inputs to clear each decade counter individually

74HC390-nexperia.pdf