HD74LS390 Datasheet - Renesas

HD74LS390 Dual Decade Counters

HD74LS390 Dual Decade Counters REJ03D0485-0400 Rev.4.00 May 10, 2006 This circuit contains eight master-slave flip-flops and additional gating to implement two individual four-bit counters. The HD74LS390 incorporates dual divide-by-two and divide-by-five counters, which can be used to implement cycle lengths equal to any whole and / or cumulative multiples of 2 and / or 5 up to divide-by-100. When connected as a biquinary counter, the separate divide-by-two circuit can be used to provide symm.

HD74LS390 Features

* Ordering Information Part Name Package Type Package Code (Previous Code) Package Abbreviation HD74LS390P DILP-16 pin PRDP0016AE-B (DP-16FV) P HD74LS390FPEL SOP-16 pin (JEITA) PRSP0016DH-B (FP-16DAV) FP Note: Please consult the sales office for the above package availability. T

HD74LS390-Renesas.pdf