Key facts
- Brand
- Maxim
- Model
- MAX7323
- Industry
- Industrial
- Documents
- 2
- Languages
- EN
- Last added
- 2012-05-08
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Maxim Integrated MAX7323 I2C Port Expander Datasheet
The MAX7323 is a general‑purpose I2C port expander that provides eight I/O ports: four push‑pull outputs and four open‑drain I/Os. It operates from a 1.71 V to 5.5 V supply and supports up to 400 kHz serial‑clock frequency. The device includes over‑voltage protection to +6 V on the I/O ports and a latched interrupt output for input‑change detection.
Key features include 20 mA sink capability per output, selectable 16‑slave I²C addresses via ADO/AD2 pins, low standby current (≈0.6 µA), and automotive‑grade temperature range (‑40 °C to +125 °C). The part is offered in 16‑pin QSOP and 16‑pin TQFN packages.
Maxim MAX7323 specifications
| Operating Supply Voltage (V+) | 1.71 V to 5.5 V |
|---|---|
| Serial‑Clock Frequency | 400 kHz |
| Output Sink Current | 20 mA per port |
| Over‑voltage Protection | +6 V on I/O ports |
| Package Options | 16‑pin QSOP, 16‑pin TQFN |
Source: Maxim Integrated MAX7323 I2C Port Expander Datasheet
All Maxim MAX7323 documents by type
Ratings, dimensions and ordering codes, for selection and design work.
Questions answered in these manuals
What I²C address range does the MAX7323 support?
The MAX7323 can be addressed with any of the 16 slave addresses from 0x60 to 0x6F.
How many I/O ports are provided by the MAX7323?
The device provides eight I/O ports: four push‑pull outputs and four open‑drain I/Os.
How many I/O ports does the MAX7323 provide?
The MAX7323 provides eight I/O ports—four push‑pull outputs and four open‑drain I/Os.
What is the maximum I²C clock frequency supported?
The I²C serial interface operates up to 400 kHz.