TC74AC390FN — dual decade & 160 MHz performance

TC74AC390FN combines two independent 4-bit counters to form a dual decade solution. Each section includes a divide-by-2 and divide-by-5 stage; clock A and clock B trigger on negative edges for clean sequencing. TC74AC390FN cascades easily for /10, /50, or /100 counts, and the CLEAR input forces all Q outputs LOW. With fmax around 160 MHz at 5 V, low ICC, 2–5.5 V rails, and 24 mA symmetrical drive (capable of 50 Ω loads), TC74AC390FN brings speed and robustness to timing chains and frequency dividers. Ready to source TC74AC390FN in the USA? Request pricing and availability now.