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MAX7219CWG+ from MAX,MAXIM - Dallas Semiconductor

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MAX7219CWG+

Manufacturer: MAX

Serially Interfaced, 8-Digit, LED Display Drivers

Partnumber Manufacturer Quantity Availability
MAX7219CWG+,MAX7219CWG MAX 15 In Stock

Description and Introduction

Serially Interfaced, 8-Digit, LED Display Drivers The MAX7219CWG+ is a compact, serial input/output common-cathode display driver manufactured by Maxim Integrated. Below are its key specifications, descriptions, and features:

### **Specifications:**  
- **Manufacturer:** Maxim Integrated  
- **Package:** SOIC-24 Wide  
- **Operating Voltage:** 4V to 5.5V  
- **Maximum Supply Current:** 330mA  
- **Maximum Segment Current:** 100mA per segment  
- **Maximum Display Digits:** 8 digits (7-segment)  
- **Data Transfer Rate:** Up to 10MHz  
- **Operating Temperature Range:** 0°C to +70°C  
- **Interface Type:** Serial (SPI-compatible)  

### **Descriptions:**  
The MAX7219CWG+ is a display driver IC designed to interface microprocessors with 7-segment numeric LED displays, bar-graph displays, or 64 individual LEDs. It features a built-in BCD code-B decoder, multiplex scan circuitry, segment and digit drivers, and an 8x8 static RAM to store digit values.  

### **Features:**  
- **Serial Interface:** Simplifies microcontroller interfacing with minimal I/O pins.  
- **Multiplexed Display Control:** Supports up to 8 digits of 7-segment displays.  
- **Decoding Options:** Includes BCD code-B decoding or no-decode modes.  
- **Adjustable Brightness:** Digital and analog brightness control.  
- **Low Power Shutdown Mode:** Includes a data-retention shutdown mode.  
- **Segment Drive Capability:** Can drive common-cathode LED displays directly.  
- **SPI-Compatible:** Works with standard serial peripheral interface protocols.  

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

Application Scenarios & Design Considerations

Serially Interfaced, 8-Digit, LED Display Drivers

Alternative Part Number

  • AS1106 --: Pin-compatible 8-digit LED display driver with the same serial interface and register set as the MAX7219, widely used as a direct drop-in replacement.
  • AS1107 --: Closely related 8-digit LED driver from ams with identical functionality and pinout to the MAX7219, offering an alternative source with similar electrical characteristics.
  • ICM7218 --: 8-digit LED display driver with multiplexed output and serial interface; functionally similar though pinout and register details differ, so it is a viable alternative with minor design changes.

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