View ds1822 datasheet:

DS1822 Econo 1-Wire� Digital Thermometer www.dalsemi.com FEATURES PIN ASSIGNMENT � Unique 1-wire interface requires only one DALLAS port pin for communication 8 NC NC 1 1822 � Each device has a unique 64-bit serial code NC 2 7 NC stored in an on-board ROM 1 2 3 � Multi-drop capability simplifies distributed VDD 3 6 NC temperature sensing applications DQ 4 5 GND �

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BJT: SBT42 | 2SA200-Y | 2SA200-O | 2SD882-Q | 2SD882-P | 2SD882-E | 2SC945-L | 2SC945-H | 2SC4226-R23 | 2SC3357-F | 2SC3357-E | 2SC3356-R26 | 2SC3356-R24 | 2SC3356-R23 | 2SB772-Q | 2SB772-P | 2SB772-E | 2SA1015-L | 2SA1015-H | HSS8550 | HSS8050