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MAX7321AEE+ from MAX,MAXIM - Dallas Semiconductor

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MAX7321AEE+

Manufacturer: MAX

I2C Port Expander with 8 Open-Drain I/Os

Partnumber Manufacturer Quantity Availability
MAX7321AEE+,MAX7321AEE MAX 400 In Stock

Description and Introduction

I2C Port Expander with 8 Open-Drain I/Os The **MAX7321AEE+** is a serial-interfaced peripheral manufactured by **Maxim Integrated** (now part of Analog Devices). Below are its key specifications, descriptions, and features:

### **Specifications:**  
- **Manufacturer:** Maxim Integrated (Analog Devices)  
- **Package:** 16-QSOP  
- **Interface:** I²C-compatible (2-wire serial)  
- **Operating Voltage:** 2.5V to 5.5V  
- **Number of I/O Ports:** 8 (configurable as input or output)  
- **Output Current per Pin:** 25mA (sink/source)  
- **Operating Temperature Range:** -40°C to +85°C  
- **Interrupt Output:** Yes (for input change detection)  
- **Clock Frequency:** Up to 400kHz (I²C Fast Mode)  

### **Descriptions:**  
The MAX7321AEE+ is an I²C-controlled I/O expander that provides 8 additional GPIO ports. It is designed for applications requiring extra digital I/O lines controlled via a microcontroller. The device supports both input and output configurations with interrupt capability for monitoring input changes.

### **Features:**  
- **8 Configurable I/O Pins:** Each pin can be independently set as input or output.  
- **Interrupt Output:** Alerts the master upon input state changes.  
- **Low Standby Current:** Suitable for power-sensitive applications.  
- **Internal Pull-Up Resistors:** Simplifies external circuitry.  
- **Small Footprint:** 16-pin QSOP package for space-constrained designs.  
- **Wide Voltage Range:** Operates from 2.5V to 5.5V for compatibility with various logic levels.  

This device is commonly used in industrial control, consumer electronics, and embedded systems for expanding I/O capabilities.  

(Data sourced from Maxim Integrated/Analog Devices datasheets.)

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