Multiplexers | MC74HC251A

8 输入多工器（3 态）

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MC54/74HC251 与 LS251 的引脚输出相同。该器件输入可兼容标准 CMOS 输出；通过上拉电阻，可兼容 LSTTL 输出。此器件根据地址输入的确定，选择八个二进制数据输入之一。输出启用引脚必须为低电平才能使得选择的数据显示在输出处。如果输出启用为高电平，则 Y 和 Y 输出均为高阻抗状态。此 3 态特性使得 HC251 能够用于总线导向系统。HC251 的功能与 HC251 相似，但没有 3 态输出。

  • Desktop

  • 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 A
  • High Noise Immunity Characteristic of CMOS Devices
  • These are PbFree Devices

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MC74HC251ADG

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Pb

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SOIC-16

751B-05

1

260

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48

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MC74HC251ADR2G

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751B-05

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MC74HC251ADTG

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96

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MC74HC251ADTR2G

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948F-01

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NLV74HC251ADR2G

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可靠性数据

Die Related Summary Data

Device: MC74HC251ADG

Equivalent to wafer fab process: CMOS SUB

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等效器件小时

平均故障间隔时间/平均无故障时间（按小时计算）

FITS

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.)

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