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        參數(shù)資料
        型號: BUS-65145-220K
        廠商: DATA DEVICE CORP
        元件分類: 微控制器/微處理器
        英文描述: 2 CHANNEL(S), 1M bps, MIL-STD-1553 CONTROLLER, DFP82
        封裝: KOVAR, DFP-82
        文件頁數(shù): 15/26頁
        文件大小: 247K
        代理商: BUS-65145-220K
        1.870 MAX
        (47.5)
        1.500
        (38)
        1.800 (46)
        INDEX
        DENOTES
        PIN 1
        2.100 MAX
        (53)
        1.900 (48)
        0.250
        MAX
        (6.35)
        0.100 TYP (2.54)
        0.250 ±0.010
        (6.35 ±0.25)
        PIN NUMBERS FOR
        REFERENCE ONLY
        1.650
        (42)
        0.018 ±0.002 DIA TYP
        (0.46 ±0.05)
        59
        20
        40
        78
        60
        21
        41
        1
        2
        SEE DETAIL "A"
        0.050 TYP (1.27)
        DETAIL "A"
        NOTE: DIMENSIONS ARE IN INCHES (MM).
        FIGURE 8. BUS-65142/43 MECHANICAL OUTLINE (STANDARD PRODUCT)
        (78-PIN KOVAR QIP)
        22
        Data Device Corporation
        www.ddc-web.com
        BU-65142 and BUS-65142 SERIES
        U-05/02-0
        SSBUSY
        58
        55
        71
        Subsystem Busy - input from the subsystem
        used to control the busy bit in the status regis-
        ter. If LOW when the status word is updated,
        the busy bit will be set, if HIGH it will be
        cleared. If the busy bit is set in the status reg-
        ister, no data will be requested from the sub-
        system in response to a transmit command.
        On receive commands, data will be transferred
        to the subsystem.
        SSFLAG
        56
        53
        72
        Subsystem Flag-- input from the subsystem
        used to control the subsystem flag bit in the
        status register. If LOW when the status word
        is updated, the subsystem flag will be set; if
        HIGH it will be cleared.
        FUNC-
        TION
        78-
        Pin
        Flat-
        Pack
        DESCRIPTION
        PACKAGE & PIN
        82-
        Pin
        Flat-
        Pack
        TABLE 6. PIN FUNCTIONS (continued)
        78-
        Pin
        QIP
        These pins are not used on this package.
        Status Word Enable-- LOW level active output
        signal present when the status word is
        enabled on the parallel data bus.
        N/C
        STATEN
        1,41,
        42,82
        44
        Low output to the primary side of the coupling
        transformer that connects to the A channel of
        the 1553 Bus.
        TXDATA
        A
        46
        Not connected.
        N/C
        48
        Power supply return connection for the A
        channel transceiver.
        GND A
        50
        Input from the HIGH side of the primary side
        of the coupling transformer that connects to
        the A channel of the 1553 Bus.
        RXDA-
        TA A
        52
        Message Error--output signal that goes LOW
        and stays LOW whenever there is a format or
        word error with the received message over the
        1553 Data Bus. Cleared by the next NGBT.
        ME
        54
        _
        41
        _
        78
        43
        77
        45
        76
        47
        75
        49
        74
        73
        51
        PIN FUNCTION TABLE NOTES(TABLE 6) :
        1. TEST 2
        This pin provides the output of the BUS-65142 BIT Comparison out-
        put. It indicates the loop test results for every word transmitted by
        the BUS-65142. A test can be performed by actioning the RTU to
        transmit while the test fixture opens the receiver lines to force an
        error condition. A logic 1 (high) indicates the loop test passed.
        Normally this pin is left open.
        2. BUFENA
        This pin is typically tied to DTACK, causing the BUS-65142 to drive
        the shared data bus only while DTACK is active. If desired BUFENA
        can be grounded. The data will remain latched on the data bus pins
        for 18s from DTRSB and 3.5s for the last word of a message as
        the device’s status word or BIT word is transferred to the BC
        (STATEN or BITEN low). Once the STATUS or BIT Word transfer is
        complete, the data bus will automatically again contain the last data
        word. The BUS-65142 will automatically switch the direction of the
        internal buffers during a transmit operation.
        3. TEST 1
        This test allows the user to force the active channel to transmit indef-
        initely, in order to test the built in Watchdog Timer feature of the
        BUS-65142. When this pin is grounded and the active channel is
        stimulated with a valid transmit command, the BUS-65142 will
        respond with a status word and contiguous data (last data word
        loaded or STATUS WORD if none is loaded) until the built-in time out
        occurs. Normally this pin is left open or an optional pull-up can be
        used.
        4. PINS 1, 41, 42, 82 for BUS-65144/45 82-pin Flat Pack, FIGURE 9
        are not connected (N/C).
        5. -VA and -VB are not connected (N/C) for BU-65142X3.
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