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MAX7349AEG+ from MAX,MAXIM - Dallas Semiconductor

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MAX7349AEG+

Manufacturer: MAX

2-Wire Interfaced Low-EMI Key Switch and Sounder Controllers

Partnumber Manufacturer Quantity Availability
MAX7349AEG+,MAX7349AEG MAX 2900 In Stock

Description and Introduction

2-Wire Interfaced Low-EMI Key Switch and Sounder Controllers The MAX7349AEG+ is a 4-wire serial-interfaced peripheral designed to provide microprocessors with I/O port expansion. It is manufactured by Maxim Integrated (now part of Analog Devices).  

### **Key Specifications:**  
- **Interface:** 4-wire SPI-compatible serial interface  
- **Operating Voltage:** 2.7V to 5.5V  
- **Number of I/O Ports:** 8 programmable I/O pins  
- **I/O Modes:** Each pin can be independently configured as input or output  
- **Interrupt Output:** Open-drain interrupt output for input change detection  
- **Operating Temperature Range:** -40°C to +85°C  
- **Package:** 24-pin QSOP  

### **Features:**  
- **Low Power Consumption:** Ideal for battery-powered applications  
- **Schmitt-Trigger Inputs:** Noise immunity on digital inputs  
- **High Output Drive:** Up to 25mA sink/source per I/O pin  
- **Software Configurable:** I/O direction can be set via SPI commands  
- **Interrupt on Change:** Detects input transitions and alerts the host  

### **Applications:**  
- Keypad scanning  
- LED control  
- General-purpose I/O expansion  
- Industrial and consumer electronics  

For detailed electrical characteristics and timing diagrams, refer to the official datasheet from Maxim Integrated (Analog Devices).

Application Scenarios & Design Considerations

2-Wire Interfaced Low-EMI Key Switch and Sounder Controllers

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