Arithmetic Logic Functions | MC74HC4020A

14 段バイナリ・リップル・カウンタ

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高性能シリコンゲート CMOS MC74C4020A のピンアウトは、標準の CMOS MC14020B と同等です。入力は標準 CMOS 出力に準拠、プルアップ抵抗器があれば LSTTL 出力に準拠します。このデバイスは、14 個のマスタ・スレーブ・フリップフロップで構成され、12 のステージがピンに出力されます。各フリップフロップの出力は次を供給し、各出力の周波数は前の出力の周波数の半分になります。リセットは非同期で、アクティブ HIGH です。内部リップル遅延のため、Q 出力の状態変化は同時に発生しません。したがって、デコードされた出力信号はデコード・スパイクを受けやすく、一部の設計では、HC4020A のクロックでゲートすることが必要な場合もあります。

  • 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 JEDEC Standard No. 7A Requirements
  • Chip Complexity: 398 FETs or 99.5 Equivalent Gates
  • Pb-Free Packages are Available*

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MC74HC4020ADR2G

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Pb

A

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SOIC-16

751B-05

1

260

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2500

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2

6

31

0.75

5.2

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MC74HC4020ADTR2G

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TSSOP-16

948F-01

1

260

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2500

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2

6

31

0.75

5.2

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