Synchronous Presettable binary counter Synchronous Up counter AC SERIES, SYN POSITIVE EDGE TRIGGERED 4-BIT UP binary counter, PDSO16 Complete, Dual, 12-Bit Multiplying DAC with 8-bit Bus Interface ACT SERIES, SYN POSITIVE EDGE TRIGGERED 4-BIT UP binary counter, PDSO16 Synchronous Presettable binary counter ACT SERIES, SYN POSITIVE EDGE TRIGGERED 4-BIT UP binary counter, PDIP16 From old datasheet system Synchronous Presettable binary counter