8 位可寻址锁存 1/8 解码器

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MC74HC259A 与 LS259 的引脚输出相同。该器件输入兼容标准的 CMOS 输出;带有上拉电阻器,可兼容 LSTTL 输出。HC259A 具有四种运行模式,如模式选择表中所示。在可寻址锁存模式下,数据输入上的数据将写入已寻址的锁存。已寻址锁存沿用数据输入,所有未寻址锁存保持在之前状态。在内存模式下,所有锁存保持在之前状态,不受数据或地址输入的影响。在 1/8 解码或信号分离模式下,已寻址输出遵循数据输入的状态,所有其他输出为低电平状态。在重置模式下,所有输出为低电平,不受地址和数据输入影响。HC259A 作为可寻址锁存运行时,更改地址的多个位可能会造成瞬变错误地址。因此,应在内存模式下完成此类更改。

  • 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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MC74HC259ADG

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Pb

A

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SOIC-16

1

260

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48

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8

2

6

25

5.2

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MC74HC259ADR2G

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Pb

A

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SOIC-16

1

260

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2500

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8

2

6

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5.2

$0.1701

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MC74HC259ADTG

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TSSOP-16

1

260

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96

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8

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6

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MC74HC259ADTR2G

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TSSOP-16

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260

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8

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$0.1552

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NLV74HC259ADTR2G

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TSSOP-16

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2500

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NLVHC259ADR2G

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A

H

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SOIC-16

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260

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2500

N

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8

2

6

25

5.2

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