12.288M+/-100 12.288M-3.3V 12.288M3225 12.288M-5X7 12.288MCSC5S122880BEV 12.288MHZ 12.288MHZ CX-53F 12.288MHZ 20PF 12.288MHZ DSX321G 12.288MHZ OSC3225有源