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MAX7221CWG+ from MAX,MAXIM - Dallas Semiconductor

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MAX7221CWG+

Manufacturer: MAX

Serially Interfaced, 8-Digit, LED Display Drivers

Partnumber Manufacturer Quantity Availability
MAX7221CWG+,MAX7221CWG MAX 30 In Stock

Description and Introduction

Serially Interfaced, 8-Digit, LED Display Drivers The MAX7221CWG+ is a serially interfaced, 8-digit LED display driver manufactured by Maxim Integrated (now part of Analog Devices).  

### **Specifications:**  
- **Manufacturer:** Maxim Integrated (Analog Devices)  
- **Part Number:** MAX7221CWG+  
- **Package:** SOIC-24 (Wide)  
- **Operating Voltage:** 4V to 5.5V  
- **Supply Current:** 150µA (typical)  
- **Data Interface:** SPI-compatible serial interface  
- **Maximum Segment Current:** 40mA per segment  
- **Maximum Display Digits:** 8 digits (or 64 individual LEDs)  
- **Brightness Control:** Digital (16-step)  
- **Operating Temperature Range:** 0°C to +70°C  
- **Features:**  
  - Decodes digits 0–9, A–F (optional)  
  - Multiplexed display support  
  - Segment drive capability up to 40mA  
  - Low-power shutdown mode  
  - Software-controlled brightness  

### **Descriptions and Features:**  
- The MAX7221CWG+ is designed to drive 7-segment LED displays, bar graphs, or 64 individual LEDs.  
- It includes an on-chip BCD code-B decoder, multiplex scan circuitry, segment and digit drivers, and an 8x8 static RAM to store digit values.  
- The device communicates via a simple 3-wire SPI-compatible serial interface, reducing microcontroller I/O requirements.  
- It supports hardware and software brightness control through an internal pulse-width modulation (PWM) circuit.  
- The MAX7221CWG+ is commonly used in industrial control panels, instrumentation, and consumer electronics requiring LED display driving.  

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

Application Scenarios & Design Considerations

Serially Interfaced, 8-Digit, LED Display Drivers

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