2-Wire-Interfaced 8-Bit I/O Port Expander with Reset The MAX7310AUE is a serial-interfaced I/O expander manufactured by Maxim Integrated (now part of Analog Devices). Below are its key specifications, descriptions, and features:
### **Specifications:**
- **Manufacturer:** Maxim Integrated (Analog Devices)
- **Part Number:** MAX7310AUE
- **Package:** 16-TSSOP (Thin Shrink Small Outline Package)
- **Operating Voltage:** 2.3V to 5.5V
- **Number of I/O Ports:** 8 (configurable as inputs or outputs)
- **Interface:** I²C-compatible (2-wire serial interface)
- **Maximum I²C Clock Frequency:** 400kHz (Fast-mode)
- **Output Current per Pin:** 20mA (sink/source)
- **Operating Temperature Range:** -40°C to +85°C
- **Interrupt Output:** Open-drain for monitoring input changes
- **Internal Pull-Up Resistors:** 100kΩ (typical) on all I/O pins
### **Descriptions:**
The MAX7310AUE is an I/O expander designed to add extra GPIO (General-Purpose Input/Output) ports to microcontrollers via the I²C serial interface. It allows bidirectional control of 8 I/O pins, which can be individually configured as inputs or outputs. The device includes an interrupt output that signals changes on input pins, reducing the need for continuous polling.
### **Features:**
1. **Wide Voltage Range:** Operates from 2.3V to 5.5V, compatible with 3.3V and 5V systems.
2. **Configurable I/O Pins:** Each of the 8 I/O pins can be independently set as an input or output.
3. **I²C Interface:** Supports standard (100kHz) and fast (400kHz) I²C modes.
4. **Interrupt Output:** Open-drain interrupt pin alerts the host of input changes.
5. **High Drive Capability:** Each I/O pin can sink/source up to 20mA.
6. **Internal Pull-Up Resistors:** Simplifies input configuration without external resistors.
7. **Low Standby Current:** Consumes minimal power in shutdown mode.
8. **Industrial Temperature Range:** Suitable for harsh environments (-40°C to +85°C).
This device is commonly used in applications requiring additional I/O expansion, such as industrial control, consumer electronics, and embedded systems.
