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MAX7323 Datasheet(PDF) 11 Page - Maxim Integrated Products |
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MAX7323 Datasheet(HTML) 11 Page - Maxim Integrated Products |
11 / 14 page I2C Port Expander with Eight Push-Pull Outputs ______________________________________________________________________________________ 11 Applications Information Hot Insertion SDA, SCL, AD0, AD2, and RST are overvoltage protect- ed to +6V independent of V+. This allows the MAX7320 to be operated from a lower supply voltage, such as +3.3V, while the I2C interface is driven from a higher logic level, such as +5V. Each of the output ports, O0–O7, has a protection diode to V+ and to GND (Figure 8). When a port output is driven to a voltage higher than V+ or lower than GND, the appropriate protection diode clamps the out- put to a diode drop above V+ or below GND. When the MAX7320 is powered down (V+ = 0V), each output port appears as a diode connected to GND (Figure 8). Power-Supply Considerations The MAX7320 operates with a supply voltage of +1.71V to +5.5V over the -40°C to +125°C temperature range. Bypass V+ to GND with a ceramic capacitor of at least 0.047µF as close to the device as possible. For the TQFN version, additionally connect the exposed pad to GND. Figure 8. Output Port Structure V+ V+ PORT MAX7320 I2C CONTROL O0 O3 O2 O1 O4 O5 O6 O7 OUTPUT PORTS GND V+ POWER- ON RESET INPUT FILTER RST SDA SCL AD2 AD0 MAX7320 Functional Block Diagram |
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Similar Description - MAX7323 |
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