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MC74LCX138 是一款高性能 3 至 8 解码器/信号分离器,运行电压范围为 2.3 至 3.6 V。高阻抗 TTL 兼容输入可明显降低输入驱动器的电流负载,而 TTL 兼容输出改善了开关噪声性能。5.5V 的 VI 规格使得 MC74LCX138 输入能够基于 5V 器件进行安全驱动。MC74LCX138 适用于内存地址解码和其他 TTL 电平总线导向应用。MC74LCX138 高速 3 至 8 解码器/信号分离器接收三个二进制加权输入(A0、A1、A2),启用后,可提供八个互斥有效低电平输出 (O0-O7)。LCX138 具有三个启用输入,两个有效低电平(E1,E2)和一个有效高电平(E3)。除非 E1和 E2 为低电平,并且 E3 为高电平,否则所有输出都为高电平。此多启用功能允许只需四个 LCX138 器件和一个逆变器即可将器件轻松并行扩展至 1/32 解码器(5 个线路至 32 个线路)(见图 1)。通过将有效低电平启用输入之一用作数据输入,将另一个启用输入用作选通,LCX138 可用作 8 输出信号分离器。未使用的启用输入必须永久保持在其相应的有效高电平或有效低电平状态。
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MC74LCX138DR2G
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MC74LCX138DTG
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MC74LCX138DTR2G
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Die Related Summary Data
Device: MC74LCX138DR2G
Equivalent to wafer fab process: CMOS SUB
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平均故障间隔时间/平均无故障时间(按小时计算)
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CMOS SUB
2
920154574
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Data is based on the following assumptions.
Note: The temperature and confidence level may be adjusted to your requirements.
Disclaimer: A reliability FIT rate calculated using this tool shall not be used for any functional safety purpose. In case a raw FIT rate needs to be estimated for a component which is targeted to be used in a safety critical application (i.e. compliant to ISO 26262 standard) it should be calculated according to generic safety standards (IEC62380, IEC61709, SN29500, FIDES, etc.)