Key facts
- Brand
- Maxim
- Model
- MAX7313
- Industry
- Industrial
- Documents
- 2
- Languages
- EN
- Last added
- 2012-05-08
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Maxim MAX7313 16-Port I/O Expander Datasheet
The MAX7313 is a 2‑wire I²C‑compatible I/O expander that provides 16 configurable ports plus a 17th port usable as an interrupt or general‑purpose output. Each port can operate as an open‑drain output capable of sinking up to 50 mA at 5.5 V or as a logic input with transition detection.
The device includes integrated 8‑bit PWM control for LED intensity, with additional 4‑bit per‑port granularity, and supports hot‑insertion. It operates over a temperature range of –40 °C to +125 °C and offers 64 selectable I²C slave addresses via three address pins.
Maxim MAX7313 specifications
| Operating Supply Voltage (V+) | 2 V to 3.6 V |
|---|---|
| Number of I/O ports | 16 ports + 1 interrupt/general‑purpose port |
| Maximum output current per port | 50 mA (5.5 V rated) |
| PWM control resolution | 8‑bit global, 4‑bit per‑port |
| Operating temperature range | -40 °C to +125 °C |
| I²C slave address length | 7‑bit |
All Maxim MAX7313 documents by type
Ratings, dimensions and ordering codes, for selection and design work.
Questions answered in these manuals
How many I/O ports does the MAX7313 provide?
It provides 16 configurable I/O ports plus a 17th port that can be used as an interrupt or general‑purpose output.
What is the maximum current each output can sink?
Each output can sink up to 50 mA while tolerating up to 5.5 V.
What serial interface does the MAX7313 use?
The MAX7313 is controlled through a 2‑wire I²C/SMBus serial interface.
What temperature range can the MAX7313 operate in?
It operates from –40 °C to +125 °C.