HD74HC590

HD74HC590 8-bit Binary Counter/Register (with 3-state outputs) REJ03D0632-0200 (Previous ADE-205-512) Rev.2.00 Mar 30, 2006 Description This device each contains an 8-bit binary counter that feeds an 8-bit storage register. The storage register has parallel outputs. Separate clocks are provided for both the binary counter and storage register. The binary counter features a direct clear input CCLR and a count enable input CCKEN. For cascading a ripple carry output RCO is provided. Expansion is easily accomplished by tying RCO of the first stage to CCKEN of the second stage, etc. Both the counter and register clocks are positive-edge triggered. If the user wishes to connect both clocks together, the counter state will always be one count ahead of the register, Internal circuitry prevents clocking from the clock enable. Features High Speed Operation: tpd (RCK to Q) = 18.5 ns typ (CL = 50 pF) High Output Current: Fanout of 15 LSTTL Loads Wide Operating Voltage: VCC = 2 to 6 V Low Input Current: 1 µA max Low Quiescent Supply Current: ICC (static) = 4 µA max (Ta = 25°C) Ordering Information Part Name Package Type Package Code (Previous Code) Package Abbreviation HD74HC590P DILP-16 pin PRDP0016AE-B (DP-16FV) P HD74HC590FPEL SOP-16 pin (JEITA) PRSP0016DH-B (FP-16DAV) FP Note: Please consult the sales office for the above package availability. Taping Abbreviation (Quantity) — EL (2,000 pcs/reel) Function Table G RCK HX LX X X XX XX XX XX Inputs CCLR X X ...