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MAX7327AEG+ Datasheet(PDF) 6 Page - Maxim Integrated Products |
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MAX7327AEG+ Datasheet(HTML) 6 Page - Maxim Integrated Products |
6 / 21 page I2C Port Expander with 12 Push-Pull Outputs and 4 Open-Drain I/Os 6 _______________________________________________________________________________________ 6 _______________________________________________________________________________________ 6 _______________________________________________________________________________________ PART I2C SLAVE ADDRESS INPUTS INPUT INTERRUPT MASK OPEN- DRAIN OUTPUTS PUSH- PULL OUTPUTS CONFIGURATION MAX7326 4 Yes — 12 4 input-only, 12 push-pull output versions: 4 input ports with programmable latching transition detection interrupt and selectable pullups. 12 push-pull outputs with selectable default logic levels. Offers maximum versatility for automatic input monitoring. An interrupt mask selects which inputs cause an interrupt on transitions, and transition flags identify which inputs have changed (even if only for a transient) since the ports were last read. MAX7327 101xxxx and 110xxxx Up to 4 — Up to 4 12 4 I/O, 12 push-pull output versions: 4 open-drain I/O ports with latching transition detection interrupt and selectable pullups. 12 push-pull outputs with selectable default logic levels. Open-drain outputs can level shift the logic-high state to a higher or lower voltage than V+ using external pullup resistors, but pullups draw current when output is low. Any open-drain port can be used as an input by setting the open-drain output to logic- high. Transition flags identify which open-drain port inputs have changed (even if only for a transient) since the ports were last read. 8-PORT EXPANDERS MAX7319 110xxxx 8 Yes — — Input-only versions: 8 input ports with programmable latching transition detection interrupt and selectable pullups. MAX7320 101xxxx —— — 8 Output-only versions: 8 push-pull outputs with selectable power-up default levels. MAX7321 110xxxx Up to 8 — Up to 8 — I/O versions: 8 open-drain I/O ports with latching transition detection interrupt and selectable pullups. MAX7322 110xxxx 4 Yes — 4 4 input-only, 4 output-only versions: 4 input ports with programmable latching transition detection interrupt and selectable pullups. 4 push-pull outputs with selectable power-up default levels. Table 1. MAX7319–MAX7329 Family Comparison (continued) |
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