Latches & Registers | MC74HC259A

8 位可寻址锁存 1/8 解码器

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概览

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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VCC Min (V)

VCC Max (V)

tpd Max (ns)

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Reference Price

MC74HC259ADG

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Obsolete

CAD Model

Pb

A

H

P

SOIC-16

751B-05

1

260

TUBE

48

N

Latch

8

2

6

25

5.2

Price N/A

More Details

MC74HC259ADR2G

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Active

CAD Model

Pb

A

H

P

SOIC-16

751B-05

1

260

REEL

2500

N

Latch

8

2

6

25

5.2

$0.1701

More Details

MC74HC259ADTG

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Obsolete

CAD Model

Pb

A

H

P

TSSOP-16

948F-01

1

260

TUBE

96

N

Latch

8

2

6

25

5.2

Price N/A

More Details

MC74HC259ADTR2G

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Active

CAD Model

Pb

A

H

P

TSSOP-16

948F-01

1

260

REEL

2500

N

Latch

8

2

6

25

5.2

$0.1552

More Details

NLV74HC259ADTR2G

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Last Shipments

CAD Model

Pb

A

H

P

TSSOP-16

948F-01

1

260

REEL

2500

N

Latch

8

2

6

25

5.2

Price N/A

More Details

NLVHC259ADR2G

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Last Shipments

CAD Model

Pb

A

H

P

SOIC-16

751B-05

1

260

REEL

2500

N

Latch

8

2

6

25

5.2

Price N/A

More Details

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