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part number : 4045 Description : 21-bit asynchronous binary counter with oscillator and reset input.Only two 3% duty cycle outputs (180` out of phase) from the last counter stageare available. Can be used to generate a 1Hz clock signal using a 2.097152MHz
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pS| 1 16| X1
nS| 2 15| X0
VCC| 3 14| GND
| 4 13|
| 5 12|
| 6 11|
QA| 7 10|
QB| 8 9|
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