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74ALVCH16821

20-bit bus-interface D-type flip-flop; positive-edge trigger; 3-state

The 74ALVCH16821 has two 10-bit, edge triggered registers, with each register coupled to a 3-state output buffer. The two sections of each register are controlled independently by the clock (nCP) and output enable (nOE) control gates.

Each register is fully edge triggered. The state of each nDn input, one set-up time before the Low-to-High clock transition, is transferred to the corresponding flip-flop’s nQn output.

When nOE is LOW, the data in the register appears at the outputs. When nOE is HIGH, the outputs are in high impedance OFF state. Operation of the nOE input does not affect the state of the flip-flops.

The 74ALVCH16821 has active bus hold circuitry which is provided to hold unused or floating data inputs at a valid logic level. This feature eliminates the need for external pull-up or pull-down resistors.

Features and benefits

  • Wide supply voltage range from 1.2 V to 3.6 V

  • CMOS low-power consumption

  • Direct interface with TTL levels

  • Current drive ± 24 mA at 3.0 V

  • MULTIBYTE flow-through standard pin-out architecture

  • Low inductance multiple VCC and GND pins for minimum noise and ground bounce

  • Output drive capability 50 Ω transmission lines at 85°C

  • All data inputs have bushold

  • Complies with JEDEC standard no. 8-1A

  • Complies with JEDEC standards:

    • JESD8-5 (2.3 V to 2.7 V)

    • JESD8B/JESD36 (2.7 V to 3.6 V)

  • ESD protection:

    • HBM ANSI/ESDA/JEDEC JS-001 exceeds 2000 V

    • CDM JESD22-C101E exceeds 1000 V

Parametrics

Type numberProduct statusVCC (V)Logic switching levelsOutput drive capability (mA)tpd (ns)fmax (MHz)Power dissipation considerationsTamb (°C)Rth(j-a) (K/W)Ψth(j-top) (K/W)Package name
74ALVCH16821DGGProduction1.2 - 3.6TTL± 242.5350low-40~859321.0TSSOP56

Package

Type numberPackagePackage informationReflow-/Wave solderingPackingStatusMarkingOrderable part number, (Ordering code (12NC))
74ALVCH16821DGG
TSSOP56
(SOT364-1) 		SOT364-1SSOP-TSSOP-VSO-WAVE
SOT364-1_118ActiveALVCH1682174ALVCH16821DGG,11
( 9352 590 10118 )

The variants in the table below are discontinued. See the table Discontinuation information for more information.

Type numberPackagePackage informationReflow-/Wave solderingPackingStatusMarkingOrderable part number, (Ordering code (12NC))
74ALVCH16821DGG
TSSOP56
(SOT364-1) 		SOT364-1SSOP-TSSOP-VSO-WAVE
SOT364-1_518Discontinued / End-of-lifeALVCH1682174ALVCH16821DGGY
( 9352 590 10518 )

Discontinuation information

Type numberOrderable part number, (Ordering code (12NC))Last time buy dateLast time delivery dateReplacement productStatusComments
74ALVCH16821DGG935259010518
74ALVCH16821DGG9352590105122021-12-312022-06-3074ALVCH16821DGG
    74ALVCH16821DGG935259010112

    Environmental information

    Type numberOrderable part numberChemical contentRoHSRHF-indicatorLeadfree conversion date
    74ALVCH16821DGG74ALVCH16821DGG,1174ALVCH16821DGGweek 2, 2006

    The variants in the table below are discontinued. See the table Discontinuation information for more information.

    Type numberOrderable part numberChemical contentRoHSRHF-indicatorLeadfree conversion date
    74ALVCH16821DGG74ALVCH16821DGGY74ALVCH16821DGGAlways Pb-free
    Quality and reliability disclaimer

    Documentation (5)

    File nameTitleTypeDate
    74ALVCH1682120-bit bus-interface D-type flip-flop; positive-edge trigger; 3-stateData sheet2018-02-02
    alvch16821alvch16821 IBIS modelIBIS model2013-04-07
    Nexperia_Selection_guide_2023Nexperia Selection Guide 2023Selection guide2023-05-10
    SSOP-TSSOP-VSO-WAVEFootprint for wave solderingWave soldering2009-10-08
    SOT364-1plastic, thin shrink small outline package; 56 leads; 0.5 mm pitch; 14 mm x 6.1 mm x 1.2 mm bodyPackage information2022-06-23

    Support

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    Models

    File nameTitleTypeDate
    alvch16821alvch16821 IBIS modelIBIS model2013-04-07

    Ordering, pricing & availability

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