双 BCD 正数计数器

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MC14518B 双 BCD 计数器和 MC14520B 双二进制计数器在一个单片结构中使用 MOS P 沟道和 N 沟道增强模式器件构造。每个均由两个相同的、独立的内部同步 4 级计数器组成。这些计数器级为 D 型触发器,带有可互换时钟和启用线路,用于在级联多级的情况下,根据需要在正向或负向转换时进行递增。每个计数器均通过在重置线路上应用高电平进行清除。另外,MC14518B 将在两个时钟段内计算所有未定义状态。这些互补 MOS 正数计数器主要用于需要低功耗和/或高抗扰性的多级同步或波纹计数应用。

  • Diode Protection on All Inputs
  • Supply Voltage Range = 3.0 Vdc to 18 Vdc
  • Internally Synchronous for High Internal and External Speeds
  • Logic Edge-Clocked Design Incremented on Positive Transition of Clock or Negative Transition on Enable
  • Capable of Driving Two Low-power TTL Loads or One Low-power Schottky TTL Load Over the Rated Temperature Range

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状态

CAD Models

Compliance

Package Type

Case Outline

MSL Type

MSL Temp (°C)

Container Type

Container Qty.

ON Target

Type

VCC Min (V)

VCC Max (V)

tpd Max (ns)

PD Max (W)

IO Max (mA)

Reference Price

MC14518BDWG

Active

CAD Model

Pb

A

H

P

SOIC-16W

3

260

TUBE

47

N

Counter

3

18

230

0.5

2.25

$0.416

More Details

MC14518BDWR2G

Active

CAD Model

Pb

A

H

P

SOIC-16W

3

260

REEL

1000

N

Counter

3

18

230

0.5

2.25

$0.416

More Details

NLV14518BDWR2G

Active, Not Rec

CAD Model

Pb

A

H

P

SOIC-16W

3

260

REEL

1000

N

Counter

3

18

230

0.5

2.25

$0.3965

More Details

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