參數(shù)資料
        型號(hào): XRK7955
        廠商: EXAR CORP
        元件分類: 時(shí)鐘及定時(shí)
        英文描述: INTELLIGENT DYNAMIC CLOCK SWITCH PLL CLOCK DRIVER
        中文描述: 7955 SERIES, PLL BASED CLOCK DRIVER, 5 TRUE OUTPUT(S), 0 INVERTED OUTPUT(S), PQFP32
        封裝: 7 X 7 MM, 1.40 MM HEIGHT, LQFP-32
        文件頁數(shù): 5/10頁
        文件大小: 157K
        代理商: XRK7955
        XRK7955
        INTELLIGENT DYNAMIC CLOCK SWITCH PLL CLOCK DRIVER
        PRELIMINARY
        xr
        REV. P1.0.1
        5
        a.
        Inputs have internal pullup/pulldown resistors which affect the input current.
        b.
        Clock inputs driven by LVPECL compatible signals.
        DC C
        HARACTERISTICS
        (V
        CC
        = 3.3 + 5%, T
        A
        = -40
        °
        C
        TO
        +85
        °
        C)
        S
        YMBOL
        C
        HARACTERISTICS
        M
        IN
        T
        YP
        M
        AX
        U
        NIT
        C
        ONDITION
        LVCMOS control inputs (MR, PLL_En, Sel_CLK, Man_Override, Alarm_Reset)
        V
        IH
        Input voltage high
        2.0
        VCC+0.3
        V
        V
        IL
        Input voltage low
        0.8
        V
        I
        IN
        Input current
        a
        100
        -150
        μΑ
        V
        IN
        =V
        CC
        or V
        IN
        =GND
        LVCMOS Control Outputs
        V
        OH
        Output High Voltage
        2.0
        V
        I
        OH
        =-10mA
        V
        OL
        Output Low Voltage
        0.55
        V
        I
        OL
        =10mA
        LVPECL clock inputs (CLK, CLK)
        b
        I
        IN
        Input current
        +100
        μΑ
        V
        IN
        =V
        CC
        or V
        IN
        =GND
        LVPECL clock outputs (Qa[1:0], Qa[1:0], Qb[2:0], Qb[2:0])
        V
        OH
        Output high voltage
        V
        CC
        -1.2
        V
        CC
        -0.7
        V
        Termination 50
        to V
        TT
        V
        OL
        Output low voltage
        V
        CC
        -1.9
        V
        CC
        -1.45
        V
        Termination 50
        to V
        TT
        Supply Current
        I
        GND
        Maximum ground supply current - gnd pins
        180
        mA
        GND pins
        I
        CCPLL
        Maximum PLL power supply - VCC_PLL pin
        15
        mA
        V
        CCPLL
        pin
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