The AMD AM25S09PC is a 4-bit D-type flip-flop with positive-edge triggering and a reset function, delivering non-inverted outputs. Housed in a 16-pin PDIP for through-hole mounting, it operates from a 4.75 V to 5.25 V supply over the commercial temperature range of 0°C to 70°C. Typical applications include register files, buffer storage, and synchronous counters in 5 V logic systems where propagation delay matters.
Maximum propagation delay is 17 ns at 5 V with a 15 pF load.
120 mA quiescent current — supply and thermal budget
The AM25S09PC draws 120 mA quiescent current, which is on the high side for a 4-bit flip-flop. In a dense 5 V logic board, that adds up fast — plan for local bypassing and check the regulator headroom. The output drive capability is 20 mA source, 1 mA sink, so it drives standard TTL loads but not heavily capacitive buses.