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MAX7328 Datasheet(PDF) 6 Page - Maxim Integrated Products |
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MAX7328 Datasheet(HTML) 6 Page - Maxim Integrated Products |
6 / 14 page I2C Port Expander with Eight Push-Pull Outputs 6 _______________________________________________________________________________________ PART I2C SLAVE ADDRESS INPUTS INPUT INTERRUPT MASK OPEN- DRAIN OUTPUTS PUSH- PULL OUTPUTS APPLICATION MAX7323 110xxxx Up to 4 — Up to 4 4 Four I/O, four output-only versions: Four open-drain I/O ports with latching transition detection interrupt and selectable pullups. Four push-pull outputs with selectable power-up default levels. MAX7328 MAX7329 0100xxx 0111xxx Up to 8 — Up to 8 — PCF8574-, PCF8574A-compatible versions: Eight open-drain I/O ports with nonlatching transition detection interrupt and pullups on all ports. All ports power up as inputs (or logic-high outputs). Any port can be used as an input by setting the open-drain output to logic-high. 16-PORT EXPANDERS MAX7324 8 Yes — 8 Software equivalent to a MAX7320 plus a MAX7321. MAX7325 Up to 8 — Up to 8 8 Software equivalent to a MAX7320 plus a MAX7319. MAX7326 4 Yes — 12 Software equivalent to a MAX7320 plus a MAX7322. MAX7327 101xxxx and 110xxxx Up to 4 — Up to 4 12 Software equivalent to a MAX7320 plus a MAX7323. Table 1. MAX7319–MAX7329 Family Comparison (continued) PART I2C SLAVE ADDRESS INPUTS INTERRUPT MASK OPEN- DRAIN OUTPUTS PUSH- PULL OUTPUTS I2C DATA WRITE I2C DATA READ MAX7319 110xxxx 8 Yes — — <I7–I0 interrupt mask> <I7–I0 port inputs> <I7–I0 transition flags> MAX7320 101xxxx — — — 8 <O7–O0 port outputs> <O7-O0 port inputs> MAX7321 110xxxx Up to 8 — Up to 8 — <P7–P0 port outputs> <P7–P0 port inputs> <P7–P0 transition flags> MAX7322 110xxxx 4 Yes — 4 <O7, O6 outputs, I5–I2 interrupt mask, O1, O0 outputs> <O7, O6, I5–I2, O1, O0 port inputs> <0, 0, I5–I2 transition flags, 0, 0> MAX7323 110xxxx Up to 4 — Up to 4 4 <port outputs> <O7, O6, P5–P2, O1, O0 port inputs> <0, 0, P5-P2 transition flags, 0, 0> MAX7328 0100xxx Up to 8 — Up to 8 — <P7–P0 port outputs> <P7–P0 port inputs> MAX7329 0111xxx Up to 8 — Up to 8 — <P7–P0 port outputs> <P7–P0 port inputs> Table 2. Read and Write Access to Eight-Port Expander Family |
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