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MAX722 from MAXIM,MAXIM - Dallas Semiconductor

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MAX722

Manufacturer: MAXIM

PALMTOP COMPUTER AND LCD POWER SUPPLY REGULATORS

Partnumber Manufacturer Quantity Availability
MAX722 MAXIM 45 In Stock

Description and Introduction

PALMTOP COMPUTER AND LCD POWER SUPPLY REGULATORS The MAX7221 is a serial input/output common-cathode display driver from Maxim Integrated (now part of Analog Devices).  

### **Specifications:**  
- **Supply Voltage (V+):** +4.0V to +5.5V  
- **Logic Input Voltage (VIN):** -0.5V to +7V  
- **LED Segment Current:** 5mA to 40mA (adjustable)  
- **Maximum Segment Sink Current:** 100mA  
- **Maximum Display Scan Rate:** 800Hz  
- **Serial Interface:** SPI-compatible (4-wire)  
- **Data Transfer Rate:** Up to 10MHz  
- **Operating Temperature Range:** -40°C to +85°C  
- **Package Options:** 24-pin DIP, SO, and SSOP  

### **Descriptions:**  
The MAX7221 is an LED display driver that interfaces microprocessors to 7-segment numeric LED displays (up to 8 digits) or bar graph displays. It includes an on-chip BCD decoder, multiplex scan circuitry, segment drivers, and an 8x8 static RAM for digit storage.  

### **Features:**  
- **SPI-Compatible Serial Interface** (4-wire)  
- **Individual LED Segment Control**  
- **Decode/No-Decode Digit Selection**  
- **Digital and Analog Brightness Control**  
- **Low-Power Shutdown Mode** (150µA)  
- **Software-Configurable Display Test Mode**  
- **Reverse Display (Common-Anode) Support**  

The MAX7221 is commonly used in industrial control panels, instrumentation, and consumer electronics for driving LED displays efficiently.

Application Scenarios & Design Considerations

PALMTOP COMPUTER AND LCD POWER SUPPLY REGULATORS

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