Arithmetic Logic Functions | MC14521B

24 段の周波数分周器

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Overview

MC14521B は、3 つの動作モードを可能にする入力回路を備えた 24 個のフリップフロップのチェーンで構成されています。入力は、水晶発振器、RC 発振器、または外部発振器の入力バッファとして機能します。各フリップフロップは前のフリップフロップの周波数を 2 で割るので、この部分は 224 = 16,777,216 までカウントされます。カウントは、クロックの負方向エッジで進みます。最後の 7 段の出力は、柔軟性を高めるために使用できます。

  • All Stages are Resettable
  • Reset Disables the RC Oscillator for Low Standby Power Drain
  • RC and Crystal Oscillator Outputs Are Capable of Driving External Loads
  • Test Mode to Reduce Test Time
  • VDD' and VSS' Pins Brought Out on Crystal Oscillator Inverter to Allow the Connection of External Resistors for Low-Power Operation
  • Supply Voltage Range = 3.0 Vdc to 18 Vdc
  • Capable of Driving Two Low-power TTL Loads or One Low-power Schottky TTL Load over the Rated Temperature Range.
  • Pb-Free Packages are Available

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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

MC14521BDG

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Active

CAD Model

Pb

A

H

P

SOIC-16

751B-05

1

260

TUBE

48

N

Divider

3

18

4500

0.5

2.25

$0.3313

More Details

MC14521BDR2G

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Active

CAD Model

Pb

A

H

P

SOIC-16

751B-05

1

260

REEL

2500

N

Divider

3

18

4500

0.5

2.25

$0.2836

More Details

NLV14521BDG

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Obsolete

CAD Model

Pb

A

H

P

SOIC-16

751B-05

1

260

TUBE

48

N

Divider

3

18

4500

0.5

2.25

Price N/A

More Details

NLV14521BDR2G

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Active

CAD Model

Pb

A

H

P

SOIC-16

751B-05

1

260

REEL

2500

N

Divider

3

18

4500

0.5

2.25

$0.3131

More Details

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