【Fairchild Semiconductor】CD4021BCN_Q,计数器移位寄存器 8-Stage Shift Reg
【Texas Instruments】CD4021BE,IC STATIC SHFT REG 8STG 16-DIP
【Texas Instruments】CD4021BEE4,IC STATIC SHFT REG 8STG 16-DIP
CD4021BEG4,IC STATIC SHFT REG 8STG 16-DIP
CD4021BF,CMOS 8-STAGE STATIC SHIFT REGIST
CD4021BF3A,CMOS 8-STAGE STATIC SHIFT REGIST
【Texas Instruments】CD4021BM,IC STATIC SHFT REG 8STG 16-SOIC
【Texas Instruments】CD4021BM96,IC STATIC SHFT REG 8STG 16-SOIC
