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DS1722 Datasheet(PDF) 2 Page - Maxim Integrated Products |
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DS1722 Datasheet(HTML) 2 Page - Maxim Integrated Products |
2 / 14 page DS1722 2 of 14 ORDERING INFORMATION Table 1 PART MARKING DESCRIPTION DS1722S DS1722 DS1722 in 150mil 8-Pin SO DS1722S/T&R DS1722 DS1722 in 150mil 8-Pin SO, 2500 Piece Tape-and- Reel DS1722S+ DS1722 (See note) DS1722 in Lead-Free 150mil 8-Pin SO DS1722S+T&R DS1722 (See note) DS1722 in Lead-Free 150mil 8-Pin SO, 2500 Piece Tape-and-Reel DS1722U 1722 DS1722 in 8-Pin µMAX DS1722U/T&R 1722 DS1722 in 8-Pin µMAX, 3000 Piece Tape-and- Reel DS1722U+ 1722 (See note) DS1722 in Lead-Free 8-Pin µMAX DS1722U+T&R 1722 (See note) DS1722 in Lead-Free 8-Pin µMAX, 3000 Piece Tape-and-Reel Note: A “+” will also be marked on the package next to the pin 1 indicator. DETAILED PIN DESCRIPTION Table 2 SOIC SYMBOL DESCRIPTION PIN 1 VDDD Digital Supply Voltage 1.8V-5.5V. Defines the top rails for the digital inputs and outputs. PIN 2 CE Chip Enable Must be asserted high for communication to take place for either the SPI or 3-wire interface. PIN 3 SCLK Serial Clock Input Used to synchronize data movement on the serial interface for either the SPI or 3-wire interface. PIN 4 GND Ground pin. PIN 5 SDO Serial Data Output When SPI communication is selected, the SDO pin is the serial data output for the SPI bus. When 3-wire communication is selected, this pin must be tied to the SDI pin (the SDI and SDO pins function as a single I/O pin when tied together.) PIN 6 SDI Serial Data Input When SPI communication is selected, the SDI pin is the serial data input for the SPI bus. When 3-wire communication is selected, this pin must be tied to the SDO pin (the SDI and SDO pins function as a single I/O pin when tied together.) PIN 7 SERMODE Serial Interface Mode Input This pin selects which interface standard will be used: SPI when connected to VCC ; standard 3-wire when connected to GND. PIN 8 VDDA Analog Supply Voltage 2.65V – 5.5V input power pin. |
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