SN74HC4040D, 12-битный асинхронный двоичный счетчик
The SN74HC4040D is a 12-stage Asynchronous Binary Counter 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-to-low transition at the clock (CLK) input. Applications include time-delay circuits, counter controls and frequency-dividing circuits.
• Outputs can drive up to 10 LSTTL loads
• Low power consumption, 80µA maximum ICC
• 12ns Typical TPD
• ±4mA Output drive at 5V
• Low input current of 1µA (maximum)
• Green product and no Sb/Br