DM54ALS390 DM74ALS390 Dual 4-Bit Decade Counters .
National Semiconductor
DM54ALS390 - Dual 4-Bit Decade Counters
DM54ALS390 DM74ALS390 Dual 4-Bit Decade Counters PRELIMINARY April 1987 DM54ALS390 DM74ALS390 Dual 4-Bit Decade Counters General Description Each of.