Key facts
- Brand
- Maxim
- Model
- MAX7319
- Documents
- 2
- Languages
- EN
- Last added
- 2012-04-05
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Maxim MAX7319 I2C Port Expander Datasheet
The MAX7319 is a 2‑wire I2C port expander that provides eight CMOS input ports with selectable internal pull‑ups, over‑voltage protection to +6 V, and maskable latching transition detection. An interrupt output (INT) can be configured to alert on changes of any selected inputs, and the device supports hot‑insertion and standby mode with low quiescent current.
The device operates from a supply voltage of 1.71 V to 5.5 V, offers 16 possible I²C slave addresses via two address pins (ADO, AD2), and is available in 16‑pin QSOP and 16‑pin TQFN packages. It is qualified for the automotive temperature range of –40 °C to +125 °C.
Maxim MAX7319 specifications
| Operating Supply Voltage (V+) | 1.71 V to 5.5 V |
|---|---|
| Serial Clock Frequency | 400 kHz |
| Operating Temperature Range | -40 °C to +125 °C |
| Input Over‑voltage Protection | +6 V |
| Package Types | 16‑pin QSOP, 16‑pin TQFN |
All Maxim MAX7319 documents by type
Ratings, dimensions and ordering codes, for selection and design work.
Questions answered in these manuals
What does the INT output do and how can it be configured?
INT is an active‑low open‑drain interrupt output that alerts on any change of selected inputs; its behavior is controlled by an 8‑bit interrupt mask register.
Is the MAX7319 tolerant to input over‑voltage?
Yes, all input ports are protected to +6 V regardless of the supply voltage.
How many input ports does the MAX7319 provide?
The device provides eight CMOS input ports.
What is the maximum I2C clock frequency supported by the MAX7319?
The MAX7319 operates up to a 400 kHz serial clock frequency.