Multiplexers | MM74HCT138

3-8 线路解码器

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MM74HCT138 解码器采用先进的硅门极 CMOS 工艺制造，非常适合用于内存地址解码或数据路由应用。这两种电路都具有高抗扰度和低功耗的特点，通常与 CMOS 电路关联，但其速度可与低功耗的肖特基 TTL 逻辑相媲美。MM74HCT138 有 3 个二进制选择输入（A、B 和 C）。如果启用该器件，这些输入将确定八个正常的高电平输出中哪一个将变为低电平。提供两个有效低电平和一个有效高电平启用（G1、G2A 和 G2B），以简化级联解码器。解码器的输出可驱动 10 个低功率肖特基 TTL 等效负载，其功能和引脚与 74LS138 相同。通过将内部二极管连接到 VCC 和接地，防止所有输入因静电放电受损。MM74HCT 器件适合用作 TTL 和 NMOS 组件与标准 CMOS 器件之间的接口。此类零部件也是 LS-TTL 器件的插件替代品，可用于降低现有设计的功耗。

  • This product is general usage and suitable for many different applications.

  • 兼容TTL输入
  • 典型传播延迟： 20 ns
  • 低静态电流： 80 µA，最大值（74HCT系列）
  • 低输入电流： 1µA，最大值
  • 10 LS-TTL负载的高扇出

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MM74HCT138M

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SOIC-16

751B-05

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MM74HCT138MTC

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MM74HCT138MTCX

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MM74HCT138MX

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MM74HCT138N

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E-PKG AXIAL-LEADED GLASS DIODE

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Die Related Summary Data

Device: MM74HCT138M

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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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.)

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