DG403DJ/Monolithie CMOS Analog Switch 16-DIP データシート https://html.alldatasheet.com/html-pdf/66547/INTERSIL/DG403DJ/321/1/DG403DJ.html
4741CP/OPE AMP IC 14-DIP データシート https://datasheetspdf.com/pdf-file/506063/ETC/4741CP/1
LM339N/Quad Single Supply Comparators IC 14-DIP データシート https://pdf1.alldatasheet.com/datasheet-pdf/view/3071/MOTOROLA/LM339N.html
DG212BDJ/Improved Quad CMOS Analog Switches IC 16-DIP データシート https://html.alldatasheet.com/html-pdf/132293/VISHAY/DG212BDJ/217/1/DG212BDJ.html
LM13700N/Dual Operational Transconductance Amp with Linearizing Diodes and Buffers IC 16-DIP データシート https://www.alldatasheet.com/datasheet-pdf/pdf/549477/TI1/LM13700N.html