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12-Stage Binary Ripple Counter IC - 74HC4040
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The 74HC Series 74HC4040 IC is a 16 Pin 12-Stage Binary Ripple Counter IC having 2V to 6V Operating Voltage range with a 1uA low input current. It has a clock input (CP), an overriding asynchronous master reset input (MR), and twelve parallel outputs (Q0 to Q11). The counter advances on the HIGH-to-LOW transition of CP.
A HIGH on MR clears all counter stages and forces all outputs LOW, independent of the state of CP. Each counter stage is a static toggle flip-flop. Inputs include clamp diodes that enable the use of current limiting resistors to interface inputs to voltages in excess of VCC.

| Power supply voltage | 2V to 6V |
| Supply voltage (Vcc) | -0.5V to + 7.0V |
| Input voltage (Vin) | -1.5V to Vcc + 1.5V |
| Output voltage (Vout) | -0.5V to Vcc + 0.5V |
| Clamp diode current | ±20mA |
| DC output current (per pin) | ±25mA |
| DC Vcc and GND current (per pin | ±50mA |
| Typical propagation delay | 16ns |
| Power dissipation | 600mW |
| Operating temperature | -55? to 125? |