Logic Gates | MM74HCT240

反相八通道3态缓冲器

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概览

MM74HCT240和MM74HCT244 3态缓冲器采用先进的硅栅极CMOS技术，是通用型高速反相和同相缓冲器。 它们具有高驱动电流输出，即使在驱动大型总线电容时也能实现高速运行。 这些电路速度堪比低功率肖特基器件，同时又能保持CMOS的低功耗。 三款器件都兼容TTL输入，并具有15个LS-TTL等效输入的扇出。 MM74HCT器件专用于TTL和NMOS组件与标准CMOS器件之间的接口。 另外，这些器件也是LS-TTL器件的插件替换件，而且可用于降低现有设计的功耗。 MM74HCT240是反相缓冲器，MM74HCT244是同相缓冲器。 每个器件包含两个有源低使能（1G和2G）并且每个使能独立控制4个缓存器。 所有输入通过连接至VCC和接地的二极管加以保护，以免因静电放电而受损。

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

  • 兼容TTL输入
  • 典型传播延迟： 14 ns
  • 3态输出用于连接系统总线
  • 低静态电流： 80 µA
  • 高输出驱动电流： 6 mA（最小值）

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MM74HCT240MTC

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Obsolete

CAD Model

Pb

A

H

P

TSSOP-20

948AQ

1

260

TUBE

1825

N

Buffer

8

4.5

5.5

14

7.2

Price N/A

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MM74HCT240MTCX

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Active

CAD Model

Pb

A

H

P

TSSOP-20

948AQ

1

260

REEL

2500

N

Buffer

8

4.5

5.5

14

7.2

$0.3172

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MM74HCT240WM

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Obsolete

CAD Model

Pb

A

H

P

SOIC-20W

751BJ

1

260

TUBE

1080

N

Buffer

8

4.5

5.5

14

7.2

Price N/A

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MM74HCT240WMX

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Last Shipments

CAD Model

Pb

A

H

P

SOIC-20W

751BJ

1

260

REEL

1000

N

Buffer

8

4.5

5.5

14

7.2

Price N/A

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可靠性数据

Die Related Summary Data

Device: MM74HCT240WM

Equivalent to wafer fab process: CMOS STD

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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 STD

3

3597164517

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Re-calculate Data

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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