參數(shù)資料
    型號(hào): SN74ALS874BNSRG4
    廠商: TEXAS INSTRUMENTS INC
    元件分類: 總線收發(fā)器
    英文描述: ALS SERIES, DUAL 4-BIT DRIVER, TRUE OUTPUT, PDSO24
    封裝: GREEN, PLASTIC, SOP-24
    文件頁數(shù): 13/18頁
    文件大小: 554K
    代理商: SN74ALS874BNSRG4
    SN54ALS874B, SN74ALS874B, SN74ALS876A
    SN74AS874, SN74AS876
    DUAL 4BIT DTYPE EDGETRIGGERED FLIPFLOPS
    SDAS061C APRIL 1982 REVISED JANUARY 1995
    4
    POST OFFICE BOX 655303
    DALLAS, TEXAS 75265
    POST OFFICE BOX 1443
    HOUSTON, TEXAS 772511443
    recommended operating conditions
    SN54ALS874B
    SN74ALS874B
    SN74ALS876A
    UNIT
    MIN
    NOM
    MAX
    MIN
    NOM
    MAX
    UNIT
    VCC
    Supply voltage
    4.5
    5
    5.5
    4.5
    5
    5.5
    V
    VIH
    High-level input voltage
    2
    V
    VIL
    Low-level input voltage
    0.7
    0.8
    V
    IOH
    High-level output current
    1
    2.6
    mA
    IOL
    Low-level output current
    12
    24
    mA
    fclock
    Clock frequency
    0
    25
    0
    30
    MHz
    PRE or CLR low
    15
    10
    tw
    Pulse duration
    CLK high
    20
    16.5
    ns
    tw
    Pulse duration
    CLK low
    20
    16.5
    ns
    tsu
    Setup time before CLK
    Data
    15
    ns
    tsu
    Setup time before CLK
    PRE or CLR inactive
    15
    10
    ns
    th
    Hold time, data after CLK
    4
    0
    ns
    TA
    Operating free-air temperature
    55
    125
    0
    70
    °C
    electrical characteristics over recommended operating free-air temperature range (unless
    otherwise noted)
    PARAMETER
    TEST CONDITIONS
    SN54ALS874B
    SN74ALS874B
    SN74ALS876A
    UNIT
    PARAMETER
    TEST CONDITIONS
    MIN
    TYP
    MAX
    MIN
    TYP
    MAX
    UNIT
    VIK
    VCC = 4.5 V,
    II = 18 mA
    1.2
    V
    VCC = 4.5 V to 5.5 V,
    IOH = 0.4 mA
    VCC 2
    VOH
    VCC = 4.5 V
    IOH = 1 mA
    2.4
    3.3
    V
    VOH
    VCC = 4.5 V
    IOH = 2.6 mA
    2.4
    3.2
    V
    VOL
    VCC = 4.5 V
    IOL = 12 mA
    0.25
    0.4
    0.25
    0.4
    V
    VOL
    VCC = 4.5 V
    IOL = 24 mA
    0.35
    0.5
    V
    IOZH
    VCC = 5.5 V,
    VO = 2.7 V
    20
    A
    IOZL
    VCC = 5.5 V,
    VO = 0.4 V
    20
    A
    II
    VCC = 5.5 V,
    VI = 7 V
    0.1
    mA
    IIH
    VCC = 5.5 V,
    VI = 2.7 V
    20
    A
    IIL
    VCC = 5.5 V,
    VI = 0.4 V
    0.2
    mA
    IO
    VCC = 5.5 V,
    VO = 2.25 V
    20
    112
    30
    112
    mA
    Outputs high
    14
    21
    14
    21
    ′ALS874B
    VCC = 5.5 V
    Outputs low
    19
    30
    19
    30
    ICC
    ALS874B
    VCC = 5.5 V
    Outputs disabled
    20
    32
    20
    32
    mA
    ICC
    Outputs high
    14
    21
    mA
    SN74ALS876A
    VCC = 5.5 V
    Outputs low
    18
    29
    SN74ALS876A
    VCC = 5.5 V
    Outputs disabled
    20
    31
    All typical values are at VCC = 5 V, TA = 25°C.
    The output conditions have been chosen to produce a current that closely approximates one half of the true short-circuit output current, IOS.
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