双 4 级二进制波纹计数器

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概览

高性能硅门极 CMOS MC74HC393A 与 LS393 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。 此器件由两个独立 4 位二进制波纹计数器组成,带有来自每个计数器级的并行输出。通过级联两个二进制计数器可实现一个 256 分频计数器。 内部触发器由时钟输入的高电平-低电平转换触发。计数器的重置为异步和有效高电平。由于内部波纹延迟,Q 输出的状态变化不会同时发生。因此,解码的输出信号会发生解码尖峰,不应用作时钟或极性,使用 HC393A 的时钟门控时除外。

  • 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 mA
  • High Noise Immunity Characteristic of CMOS Devices
  • In Compliance with the Requirements Defined by JEDEC Standard No. 7A
  • Chip Complexity: 236 FETs or 59 Equivalent Gates
  • Pb-Free Packages are Available

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MC74HC393ADG

Active

CAD Model

Pb

A

H

P

SOIC-14

1

260

TUBE

55

N

Counter

2

6

52

0.75

5.2

$0.1831

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MC74HC393ADR2G

Active

CAD Model

Pb

A

H

P

SOIC-14

1

260

REEL

2500

N

Counter

2

6

52

0.75

5.2

$0.1831

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MC74HC393ADTR2G

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CAD Model

Pb

A

H

P

TSSOP-14 WB

1

260

REEL

2500

N

Counter

2

6

52

0.75

5.2

$0.2452

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NLV74HC393ADR2G

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CAD Model

Pb

A

H

P

SOIC-14

1

260

REEL

2500

N

Counter

2

6

52

0.75

5.2

Price N/A

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