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74HC590BQ

8-bit binary counter with output register; 3-state

The 74HC590 is an 8-bit binary counter with a storage register and 3-state outputs. The storage register has parallel (Q0 to Q7) outputs. The binary counter features master reset counter (MRC) and count enable (CE) inputs. The counter and storage register have separate positive edge triggered clock (CPC and CPR) inputs. If both clocks are connected together, the counter state is always one count ahead of the register. Internal circuitry prevents clocking from the clock enable. A ripple carry output (RCO) is provided for cascading. Cascading is accomplished by connecting RCO of the first stage to CE of the second stage. Cascading for larger count chains can be accomplished by connecting RCO of each stage to the counter clock (CPC) input of the following stage. Inputs include clamp diodes. This enables the use of current limiting resistors to interface inputs to voltages in excess of VCC.

Orderable parts

Type number Orderable part number Ordering code (12NC) Package Buy from distributors
74HC590BQ 74HC590BQ,115 935278834115 SOT763-1 Order product

Features and benefits

  • Counter and register have independent clock inputs
  • Counter has master reset
  • Complies with JEDEC standard no. 7A
  • Multiple package options
  • Input levels:
    • For 74HC590: CMOS level
  • ESD protection:
    • HBM JESD22-A114F exceeds 2000 V
    • MM JESD22-A115-A exceeds 200 V
    • CDM JESD22-C101C exceeds 2000 V
  • Specified from -40 °C to +85 °C and from -40 °C to +125 °C

Applications

Parametrics

Type numberProduct statusVCC (V)Output drive capability (mA)Logic switching levelstpd (ns)Power dissipation considerationsTamb (°C)Rth(j-a) (K/W)Ψth(j-top) (K/W)Rth(j-c) (K/W)Package name
74HC590BQProduction2.0 - 6.0± 5.2CMOS19low-40~1258810.356DHVQFN16

Package

Type numberOrderable part number, (Ordering code (12NC))StatusMarkingPackagePackage informationReflow-/Wave solderingPacking
74HC590BQ74HC590BQ,115
( 9352 788 34115 )
ActiveHC590
DHVQFN16
(SOT763-1)
SOT763-1Reel 7” Q1/T1 or Q2/T3

Quality, reliability & chemical content

Type numberOrderable part numberChemical contentRoHS / RHFEFRIFRMTBF (hour)MSLMSL leadfree
74HC590BQ74HC590BQ,11574HC590BQ84.96.621.51E811
Quality and reliability disclaimer

Documentation (3)

File nameTitleTypeDate
74HC5908-bit binary counter with output register; 3-stateData sheet2017-03-17
AN11044Pin FMEA 74HC/74HCT familyApplication note2019-01-09
HCT_USER_GUIDEHC/T User GuideUser manual1997-10-31

Support

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Ordering, pricing & availability

Type numberOrderable part numberOrdering code (12NC)PackingBuy online
74HC590BQ74HC590BQ,115935278834115Reel 7” Q1/T1 or Q2/T3Order product

Sample

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Sample orders normally take 2-4 days for delivery.

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