stm
部件型号 厂商 描述

M74HCT157B1R

STMicroelectronics Multiplexer 1-Element CMOS 8-IN 16-Pin PDIP Tube

M74HCT138B1R

STMicroelectronics Decoder/Demultiplexer Single 3-to-8 16-Pin PDIP Tube
1
1-1