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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.
SN54HC4040 Datasheet
