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TC74AC521F from TOSHIBA

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TC74AC521F

Manufacturer: TOSHIBA, TOS

8-BIT EQUALITY COMPARATOR

Partnumber Manufacturer Quantity Availability
TC74AC521F TOSHIBA, TOS 3752 In Stock

Description and Introduction

8-BIT EQUALITY COMPARATOR The TC74AC521F is a high-speed CMOS 8-bit comparator manufactured by Toshiba. Below are the factual details from Ic-phoenix technical data files:

### **Manufacturer:**  
Toshiba  

### **Specifications:**  
- **Logic Family:** AC Series (Advanced CMOS)  
- **Supply Voltage Range:** 2.0V to 5.5V  
- **High-Speed Operation:** tpd = 5.5ns (typical) at 5V  
- **Low Power Consumption:** ICC = 4μA (max) at 5.5V  
- **Output Drive Capability:** 24mA at 5V  
- **Input Compatibility:** TTL levels  
- **Package Type:** SOP (Small Outline Package)  
- **Pin Count:** 20  

### **Descriptions:**  
- The TC74AC521F is an 8-bit identity comparator that compares two 8-bit binary words (A and B) and provides an active-low output when they match.  
- It features a cascading input (P) for expanding comparisons to larger word lengths.  
- Designed for high-speed arithmetic and logic operations in digital systems.  

### **Features:**  
- **8-bit Magnitude Comparator:** Compares two 8-bit inputs (A0-A7 and B0-B7).  
- **Active-Low Output:** Outputs a low signal when inputs are identical.  
- **Cascading Capability:** Expandable using the P input for multi-byte comparisons.  
- **Wide Operating Voltage:** Supports 2.0V to 5.5V, making it versatile for different logic levels.  
- **TTL-Compatible Inputs:** Ensures compatibility with TTL logic families.  
- **High Noise Immunity:** CMOS technology provides robust noise resistance.  
- **Low Power Consumption:** Suitable for battery-operated devices.  

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

Application Scenarios & Design Considerations

8-BIT EQUALITY COMPARATOR

Alternative Part Number

  • CD74AC521M --: Same AC-family 8-bit identity comparator with equivalent function and pinout, widely available from a major logic supplier.
  • MC74AC521DWR2G --: AC-series 8-bit magnitude comparator in SOIC package, functionally equivalent and a common second source.
  • SN74AC521N --: AC logic 8-bit identity comparator in DIP, drop-in functional replacement for the TC74AC521F.
  • 74AC521SC --: Same 8-bit identity comparator function in the AC logic family with equivalent pinout and voltage range, available from a different vendor and series naming.
  • CD74AC521E --: AC-family 8-bit magnitude comparator with matching function and pinout, widely stocked and a direct functional drop-in from a different manufacturer.
  • MC74AC521N --: AC logic 8-bit identity comparator offering the same function and compatible electrical characteristics, useful as a second-source alternative.

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