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SN74HC4040 - 12-Bit Asynchronous Binary Counters

General Description

The ’HC4040 devices are 12-stage asynchronous binary counters, with the outputs of all stages available externally.

A high level at the clear (CLR) input asynchronously clears the counter and resets all outputs low.

The count is advanced on a high-tolow transition at the clock (CLK) input.

Key Features

  • Wide operating voltage range of 2 V to 6 V.
  • Outputs can drive up to 10 LSTTL loads.
  • Low power consumption, 80-µA max ICC.
  • Typical tpd = 12 ns.
  • ±4-mA output drive at 5 V.
  • Low input current of 1 µA max 2.

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Full PDF Text Transcription (Reference)

The following content is an automatically extracted verbatim text from the original manufacturer datasheet and is provided for reference purposes only.

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SN54HC4040, SN74HC4040 SCLS160E – DECEMBER 1982 – REVISED MARCH 2022 SNx4HC4040 12-Bit Asynchronous Binary Counters 1 Features • Wide operating voltage range of 2 V to 6 V • Outputs can drive up to 10 LSTTL loads • Low power consumption, 80-µA max ICC • Typical tpd = 12 ns • ±4-mA output drive at 5 V • Low input current of 1 µA max 2 Description The ’HC4040 devices are 12-stage asynchronous binary counters, with the outputs of all stages available externally. A high level at the clear (CLR) input asynchronously clears the counter and resets all outputs low. The count is advanced on a high-tolow transition at the clock (CLK) input. Applications include time-delay circuits, counter controls, and frequency-dividing circuits.