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SN74ALS521 from TI,Texas Instruments

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SN74ALS521

Manufacturer: TI

8-Bit Identity Comparators With Open-Collector Outputs

Partnumber Manufacturer Quantity Availability
SN74ALS521 TI 541 In Stock

Description and Introduction

8-Bit Identity Comparators With Open-Collector Outputs The SN74ALS521 is a high-speed 8-bit identity comparator manufactured by Texas Instruments (TI).  

### **Key Specifications:**  
- **Logic Type:** 8-bit Identity/Magnitude Comparator  
- **Supply Voltage Range:** 4.5V to 5.5V  
- **Operating Temperature Range:** 0°C to 70°C (Commercial)  
- **Propagation Delay:** Typically 12ns (max 18ns)  
- **Input Current (High):** 20µA (max)  
- **Input Current (Low):** -0.1mA (max)  
- **Output Current (High):** -1mA (max)  
- **Output Current (Low):** 24mA (max)  
- **Package Options:** 20-pin DIP, SOIC  

### **Description:**  
The SN74ALS521 compares two 8-bit binary words (A and B) and provides an active-low output indicating whether the words are identical. It is designed for high-speed operation with low power consumption.  

### **Features:**  
- **High-Speed Operation:** Optimized for fast comparison (12ns typical delay).  
- **TTL-Compatible Inputs/Outputs:** Works with standard TTL logic levels.  
- **Expandable:** Cascadable for larger word comparisons.  
- **Low Power Consumption:** Suitable for power-sensitive applications.  
- **Wide Operating Voltage:** Supports standard 5V logic systems.  

The device is commonly used in digital systems for address decoding, data validation, and control logic applications.

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