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74HC165N,652 8-bit parallel-in/serial-out shift register - Description: 8-Bit Parallel-In/Serial-Out Shift Register ; Fmax: 56 MHz; Logic switching levels: CMOS ;10+NXPDIP-16 删除
74HC251D,653 Replacement for Texas Instruments part number SN74HC251D. Buy from authorized manufacturer Rochester Electronics.10+NXPSOP16 删除

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