CH440、CH442、CH443、CH444、CH445 １ 4 5V.
ETC
CH442 - SPDT low impedance analog switch chip
CH440、CH442、CH443、CH444、CH445 １ 4 5V CH440G/P/R 2 5V CH442E 1 5V CH443K 2 5V CH444G/P 4 3.3V CH445P ：2D http://wch.cn 1、 CH440G/P/R、CH44.
ETC
CH442E - SPDT low impedance analog switch chip
CH440、CH442、CH443、CH444、CH445 １ 4 5V CH440G/P/R 2 5V CH442E 1 5V CH443K 2 5V CH444G/P 4 3.3V CH445P ：2D http://wch.cn 1、 CH440G/P/R、CH44.
