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CD74HCT4020 - 14-Stage Binary Counter

Download the CD74HCT4020 datasheet PDF. This datasheet also covers the CD74HC4020 variant, as both devices belong to the same 14-stage binary counter family and are provided as variant models within a single manufacturer datasheet.

General Description

The ’HC4020 and ’HCT4020 are 14-stage ripple-carry binary counters.

All counter stages are controller/ peripheral flip- flops.

The state of the stage advances one count on the negative clock transition of each input pulse; a high voltage level on the MR line resets all counters to their zero state.

Key Features

  • Fully static operation.
  • Buffered inputs.
  • Common reset.
  • Negative edge clocking.
  • Fanout (over temperature range).
  • Standard outputs: 10 LSTTL loads.
  • Bus driver outputs: 15 LSTTL loads.
  • Wide operating temperature range: -55℃ to 125℃.
  • Balanced propagation delay and transition times.
  • Significant power reduction compared to LSTTL Logic ICs.
  • HC types.
  • 2 V to 6 V operation.
  • High noise imm.

📥 Download Datasheet

Note: The manufacturer provides a single datasheet file (CD74HC4020-etcTI.pdf) that lists specifications for multiple related part numbers.

Full PDF Text Transcription for CD74HCT4020 (Reference)

Note: Below is a high-fidelity text extraction (approx. 800 characters) for CD74HCT4020. For precise diagrams, and layout, please refer to the original PDF.

CD54HC4020, CD74HC4020, CD54HCT4020, CD74HCT4020 SCHS201D – FEBRUARY 1998 – REVISED AUGUST 2022 CDx4HC4020, CDx4HCT4020 CDHigh-Speed CMOS Logic 14-Stage Binary Counter 1 ...

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HC4020, CDx4HCT4020 CDHigh-Speed CMOS Logic 14-Stage Binary Counter 1 Features • Fully static operation • Buffered inputs • Common reset • Negative edge clocking • Fanout (over temperature range) – Standard outputs: 10 LSTTL loads – Bus driver outputs: 15 LSTTL loads • Wide operating temperature range: -55℃ to 125℃ • Balanced propagation delay and transition times • Significant power reduction compared to LSTTL Logic ICs • HC types – 2 V to 6 V operation – High noise immunity: NIL = 30%, NIH = 30% of VCC at VCC = 5 V • HCT types – 4.5 V to 5.5 V operation – Direct LSTTL input logic compatibility, VIL = 0.

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