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MAX7300AAX Datasheet(PDF) 1 Page - Maxim Integrated Products |
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MAX7300AAX Datasheet(HTML) 1 Page - Maxim Integrated Products |
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1 / 20 page  Pin Configurations continued at end of data sheet. ● White Goods ● Industrial Controllers ● System Monitoring General Description The MAX7300 compact, serial-interfaced, I/O expansion peripheral provides microprocessors with up to 28 ports. Each port is individually user configurable to either a logic input or logic output. Each port can be configured as either a push-pull logic output capable of sinking 10mA and sourcing 4.5mA, or a Schmitt logic input with optional internal pullup. Seven ports feature configurable transition detection logic, which generates an interrupt upon change of port logic level. The MAX7300 is controlled through an I2C-compatible 2-wire serial interface, and uses four-level logic to allow 16 I2C addresses from only two select pins. The MAX7300AAX and MAX7300ATL have 28 ports and are available in 36-pin SSOP and 40-pin TQFN packages, respectively. The MAX7300AAI and MAX7300ATI have 20 ports and are available in 28-pin SSOP and TQFN pack- ages. For an SPI-interfaced version, refer to the MAX7301 data sheet. For a pin-compatible port expander with addi- tional 24mA constant-current LED drive capability, refer to the MAX6956 data sheet. Features ● 400kbps I2C-Compatible Serial Interface ● 2.5V to 5.5V Operation ● -40°C to +125°C Temperature Range ● 20 or 28 I/O Ports, Each Configurable as Push-Pull Logic Output Schmitt Logic Input Schmitt Logic Input with Internal Pullup ● 11µA (max) Shutdown Current ● Logic Transition Detection for Seven I/O Ports *EP = Exposed pad. Devices are also available in a lead(Pb)-free/RoHS-compliant package. Specify lead-free by adding “+” to the part number when ordering. Devices are also available in tape-and-reel packaging. Specify tape and reel by adding “T” to the part number when ordering. PART TEMP RANGE PIN-PACKAGE MAX7300AAI -40°C to +125°C 28 SSOP MAX7300ATI -40°C to +125°C 28 TQFN-EP* MAX7300AAX -40°C to +125°C 36 SSOP MAX7300ATL -40°C to +125°C 40 TQFN-EP* 28 27 26 25 24 23 22 21 20 19 18 17 16 15 1 2 3 4 5 6 7 8 9 10 11 12 13 14 V+ AD1 SCL SDA P31 P30 P22 P29 P28 P27 P26 P25 P24 P23 P21 P20 P19 P18 P17 P16 P15 P14 P13 P12 AD0 GND GND ISET 28 SSOP TOP VIEW MAX7300 MAX7300 2-Wire-Interfaced, 2.5V to 5.5V, 20-Port or 28-Port I/O Expander 19-2413; Rev 8; 5/14 P5 P4 P7 P8 P6 P10 P9 P12 P13 P11 P15 P14 P17 P18 P16 P20 P19 I/O 5 I/O 4 I/O 7 I/O 8 I/O 6 I/O 10 I/O 9 I/O 12 I/O 13 I/O 11 I/O 15 I/O 14 I/O 17 I/O 18 I/O 16 I/O 20 I/O 19 I/O 21 I/O 22 I/O 23 P22 P23 P21 36 2 3 4 33 35 34 29 27 31 24 25 22 21 23 V+ GND GND AD0 AD1 SCL P30 P29 P31 P27 P28 P25 P24 P26 32 30 26 5 7 9 28 6 8 11 10 12 14 15 13 17 16 19 20 18 SDA MAX7300AAX 3V DATA CLOCK I/O 24 I/O 25 I/O 27 I/O 26 I/O 29 I/O 30 I/O 28 I/O 31 47nF 39kΩ 1 ISET Typical Operating Circuit Ordering Information Pin Configurations Application |
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