Arithmetic Logic Functions | MC14490

六路跳动消除器

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MC14490 使用互补 MOS 增强模式器件构建而成，用于消除与机械触点接口时导致的过大电平变化。数字触点跳动消除器电路从跳动触点获取输入信号，该输入稳定之后生成一个明确的数字信号四时钟时段。跳动消除器电路将消除触点壳体“合”和“开”上的跳动。MC14490 的运行时钟来自内部 R-C 振荡器，仅需一个外部电容器即可针对所需运行频率（跳动延迟）进行调节。该时钟还可从外部时钟源或另一个 MC14490 的振荡器驱动（参见图 5）。注释： 通电之后，MC14490 的输出将立即进入非确定状态。

  • Diode Protection on All Inputs
  • Six Debouncers Per Package
  • Internal Pullups on All Data Inputs
  • Can Be Used as a Digital Integrator, System Synchronizer, or Delay Line
  • Internal Oscillator (R-C), or External Clock Source
  • TTL Compatible Data Inputs/Outputs
  • Single Line Input, Debounces Both "Make" and "Break" Contacts
  • Does Not Require "Form C" (Single Pole Double Throw) Input Signal
  • Cascadable for Longer Time Delays
  • Schmitt Trigger on Clock Input (Pin 7)
  • Supply Voltage Range = 3.0 V to 18 V
  • Chip Complexity: 546 FETs or 136.5 Equivalent Gates
  • Pb-Free Packages are Available

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MC14490DWG

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CAD Model

Pb

A

H

P

SOIC-16W

751G-03

3

260

TUBE

47

N

Bounce Eliminator

3

18

320

0.5

9

$0.5051

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MC14490DWR2G

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CAD Model

Pb

A

H

P

SOIC-16W

751G-03

3

260

REEL

1000

N

Bounce Eliminator

3

18

320

0.5

9

$0.5051

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NLV14490DWG

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CAD Model

Pb

A

H

P

SOIC-16W

751G-03

3

260

TUBE

47

N

Bounce Eliminator

3

18

320

0.5

9

Price N/A

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NLV14490DWR2G

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Active

CAD Model

Pb

A

H

P

SOIC-16W

751G-03

3

260

REEL

1000

N

Bounce Eliminator

3

18

320

0.5

9

$0.5031

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可靠性数据

Die Related Summary Data

Device: MC14490DWG

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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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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