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SN74LS688NSR from TI,Texas Instruments

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SN74LS688NSR

Manufacturer: TI

8-Bit Magnitude/Identity Comparators

Partnumber Manufacturer Quantity Availability
SN74LS688NSR TI 292 In Stock

Description and Introduction

8-Bit Magnitude/Identity Comparators The SN74LS688NSR is a high-speed 8-bit magnitude comparator manufactured by Texas Instruments (TI).  

### **Key Specifications:**  
- **Logic Type:** 8-bit Magnitude Comparator  
- **Technology:** LS (Low-Power Schottky)  
- **Supply Voltage Range:** 4.75V to 5.25V  
- **Operating Temperature Range:** 0°C to 70°C  
- **Package Type:** SOIC (20-pin)  
- **Output Type:** Active Low  
- **Propagation Delay:** Typically 15ns  

### **Descriptions and Features:**  
- Compares two 8-bit binary or BCD numbers (A and B).  
- Provides three outputs: **A > B**, **A = B**, and **A < B** (active-low).  
- Cascadable for larger word comparisons.  
- Low power consumption typical of LS series.  
- TTL-compatible inputs and outputs.  
- Includes enable input (**G**) for output control.  

This IC is commonly used in arithmetic and logic applications where numerical comparison is required.

Application Scenarios & Design Considerations

8-Bit Magnitude/Identity Comparators

Alternative Part Number

  • 74LS688N --: Same 8-bit magnitude comparator function in a DIP package, pin-compatible logic and widely available as a direct functional substitute.
  • CD74HC688E --: CMOS 8-bit identity comparator with equivalent function and lower power consumption, suitable replacement when speed requirements are moderate.
  • MC74HC688N --: Second-source 8-bit magnitude comparator in DIP package offering similar logic function and pinout for drop-in replacement.

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