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MAX7319AEE+ from MAXIM,MAXIM - Dallas Semiconductor

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MAX7319AEE+

Manufacturer: MAXIM, MAX

I²C Port Expander with Eight Inputs and Maskable Transition Detection

Partnumber Manufacturer Quantity Availability
MAX7319AEE+ MAXIM, MAX 7801 In Stock

Description and Introduction

I²C Port Expander with Eight Inputs and Maskable Transition Detection The **MAX7319AEE+** is a **16-bit I²C port expander with interrupt output** manufactured by **Maxim Integrated**.  

### **Specifications:**  
- **Interface:** I²C-compatible (supports 400kHz fast-mode)  
- **Number of I/O Ports:** 16 (individually configurable as inputs or outputs)  
- **Supply Voltage Range:** 1.65V to 5.5V  
- **Operating Temperature Range:** -40°C to +85°C  
- **Package:** 16-pin QSOP  
- **Interrupt Output:** Configurable for open-drain or push-pull  
- **Current Consumption:** Low-power operation (typ. 1μA in shutdown mode)  
- **Output Drive Capability:** 10mA per I/O (sink/source)  
- **Internal Pull-Up Resistors:** Programmable (100kΩ typical)  

### **Descriptions:**  
The MAX7319AEE+ provides **16 general-purpose I/O (GPIO) ports** that can be independently configured as inputs or outputs. It communicates via an **I²C interface**, making it suitable for expanding microcontroller I/O capabilities. The device includes an **interrupt output** that signals changes on input pins, reducing the need for continuous polling.  

### **Features:**  
- **16 configurable I/O pins** (individually programmable as inputs or outputs)  
- **I²C-compatible serial interface** (supports up to 400kHz)  
- **Wide voltage range (1.65V to 5.5V)** for compatibility with various logic levels  
- **Interrupt output** for input state change detection  
- **Low-power operation** (1μA shutdown current)  
- **Internal programmable pull-up resistors**  
- **Small 16-pin QSOP package** for space-constrained designs  

This device is commonly used in applications requiring **I/O expansion**, such as industrial controls, embedded systems, and consumer electronics.

Application Scenarios & Design Considerations

I²C Port Expander with Eight Inputs and Maskable Transition Detection

Alternative Part Number

  • PCA9536DP --: 4-bit I2C GPIO expander with similar small-channel count and I2C interface, widely available and pin-function compatible for many designs.
  • TCA9539PWR --: I2C GPIO expander from TI with comparable I2C control interface and broad supply availability, suitable as a functional substitute.
  • PCF8574T --: Classic 8-bit I2C I/O expander offering similar I2C GPIO expansion function, very common and cost-effective alternative.
  • PCA9554APW --: 8-bit I2C I/O expander with interrupt, functionally similar to the MAX7319 and widely available.
  • PCF8574AT --: Classic 8-bit I2C I/O expander with interrupt, low-cost drop-in style alternative for simple I/O expansion.

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