应用功能: 锁相环双分频器 The MC12015, MC12016 and MC12017 are dual modulus prescalers which will drive divide by 32 and 33, 40 and 41, and 64 and 65, respectively.An internal regulator is provided to allow these devices to be used over a wide range of power–supply voltages. The devices may be operated by applying a supply voltage of 5.0 Vdc ±10% at Pin 7, or by applying an unregulated voltage source from 5.5Vdc to 9.5 Vdc to Pin 8.