• 參數(shù)資料
    型號(hào): MC74HC688N
    廠商: MOTOROLA INC
    元件分類: 通用總線功能
    英文描述: 8-Bit Equality Comparator
    中文描述: HC/UH SERIES, 8-BIT IDENTITY COMPARATOR, INVERTED OUTPUT, PDIP20
    封裝: PLASTIC, DIP-20
    文件頁數(shù): 1/6頁
    文件大?。?/td> 202K
    代理商: MC74HC688N
    SEMICONDUCTOR TECHNICAL DATA
    1
    REV 6
    Motorola, Inc. 1995
    10/95
    High–Performance Silicon–Gate CMOS
    The MC54/74HC688 is identical in pinout to the LS688. The device inputs
    are compatible with standard CMOS outputs; with pullup resistors, they are
    compatible with LSTTL outputs.
    The HC688 compares two 8–bit binary or BCD words and indicates
    whether or not they are equal. By using the Cascade Input, two or more of
    the devices may be cascaded to compare words of more than 8 bits.
    Output Drive Capability: 10 LSTTL Loads
    Outputs Directly Interface to CMOS, NMOS, and TTL
    Operating Voltage Range: 2 to 6 V
    Low Input Current: 1
    μ
    A
    High Noise Immunity Characteristic of CMOS Devices
    In Compliance with the Requirements Defined by JEDEC Standard
    No. 7A
    Chip Complexity: 116 FETs or 29 Equivalent Gates
    LOGIC DIAGRAM
    2
    4
    6
    8
    11
    13
    15
    17
    3
    5
    7
    9
    1
    A0
    A1
    A2
    A3
    A4
    A5
    A6
    A7
    CASCADE
    INPUT
    PIN 20 = VCC
    PIN 10 = GND
    19
    A = B
    OUTPUT
    DATA
    WORD
    A
    INPUTS
    DATA
    WORD
    B
    INPUTS
    12
    14
    16
    18
    B0
    B1
    B2
    B3
    B4
    B5
    B6
    B7
    PIN ASSIGNMENT
    FUNCTION TABLE
    A2
    A1
    B0
    A0
    CASCADE
    INPUT
    GND
    B3
    A3
    B2
    B1
    5
    4
    3
    2
    1
    10
    9
    8
    7
    6
    14
    15
    16
    17
    18
    19
    20
    11
    12
    13
    B6
    A7
    A = B
    VCC
    B4
    A5
    B5
    A6
    Inputs
    Output
    Data
    Words
    Cascade
    A = B
    A = B
    A > B
    A < B
    X
    L
    L
    L
    H
    L
    H
    H
    H
    DW SUFFIX
    SOIC PACKAGE
    CASE 751D–04
    N SUFFIX
    PLASTIC PACKAGE
    CASE 738–03
    J SUFFIX
    CERAMIC PACKAGE
    CASE 732–03
    1
    20
    1
    20
    1
    20
    ORDERING INFORMATION
    MC54HCXXXJ
    MC74HCXXXN
    MC74HCXXXDW
    Ceramic
    Plastic
    SOIC
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