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MAX6955AAX+ from MAXIM,MAXIM - Dallas Semiconductor

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MAX6955AAX+

Manufacturer: MAXIM, MAX

2-Wire Interfaced, 2.7V to 5.5V LED Display Driver with I/O Expander and Key Scan
Partnumber Manufacturer Quantity Availability
MAX6955AAX+,MAX6955AAX MAXIM, MAX 1100 In Stock

Description and Introduction

2-Wire Interfaced, 2.7V to 5.5V LED Display Driver with I/O Expander and Key Scan The MAX6955AAX+ is a versatile LED display driver manufactured by Maxim Integrated. Below are the factual details about its specifications, descriptions, and features:

### **Specifications:**
- **Manufacturer:** Maxim Integrated  
- **Part Number:** MAX6955AAX+  
- **Type:** LED Display Driver  
- **Interface:** I²C, 2-Wire Serial  
- **Supply Voltage Range:** 2.7V to 5.5V  
- **Operating Temperature Range:** -40°C to +125°C  
- **Package:** 36-Pin SSOP  
- **Number of Segments:** 132 (or 28 x 5)  
- **Number of Digits:** 28 (5-segment digits)  
- **Current per Segment:** Adjustable (up to 40mA)  
- **Dimming Control:** 16-step brightness control  
- **Data Rate:** Up to 400kHz (I²C Fast Mode)  

### **Descriptions:**
The MAX6955AAX+ is a compact, high-performance LED display driver designed for driving multiplexed 5×7 dot matrix or discrete LED displays. It supports an I²C-compatible 2-wire serial interface, allowing easy communication with microcontrollers. The device includes an on-chip oscillator, eliminating the need for external timing components. It is suitable for applications requiring LED brightness control and efficient power management.

### **Features:**
- **Multiplexed LED Drive:** Supports up to 28 digits (5-segment) or 132 individual segments.  
- **Flexible Display Control:** Can drive 5×7 dot matrix displays or discrete LEDs.  
- **Brightness Adjustment:** 16-step programmable brightness control.  
- **Low Power Consumption:** Operates from a 2.7V to 5.5V supply.  
- **I²C Interface:** Allows easy integration with microcontrollers.  
- **Thermal Protection:** Built-in thermal shutdown to prevent overheating.  
- **Open/Short-Circuit Detection:** Monitors LED status for fault detection.  
- **Low Standby Current:** Reduces power consumption in idle mode.  

This information is based solely on the manufacturer's datasheet and technical documentation.

Application Scenarios & Design Considerations

2-Wire Interfaced, 2.7V to 5.5V LED Display Driver with I/O Expander and Key Scan

Alternative Part Number

  • PCA9555PW --: I2C I/O expander with similar GPIO driving capability, widely available and pin-compatible in function for LED/display control applications.
  • TCA9555PWR --: Drop-in functional equivalent I2C I/O expander with 16-bit GPIO, good supply availability and similar voltage range.
  • MCP23017-E/SS --: 16-bit I2C I/O expander offering comparable port expansion for LED driving, with broad availability and similar interface.
  • MAX6955ATL+ --: Same MAX6955 display driver family in a different TQFN package, functionally equivalent with similar drive capability.
  • MAX6954AAX+ --: Closely related MAX6954 LED display driver from the same series, offering comparable multiplexed display driving in the same SSOP package.
  • MAX7219CNG+ --: Well-known 8-digit LED display driver with serial interface, a practical substitute when the exact MAX6955 function is not required.

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