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SN74HC688DW from TI,Texas Instruments

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SN74HC688DW

Manufacturer: TI

8-Bit Identity Comparators

Partnumber Manufacturer Quantity Availability
SN74HC688DW TI 217 In Stock

Description and Introduction

8-Bit Identity Comparators **Manufacturer:** Texas Instruments (TI)  

**Part Number:** SN74HC688DW  

### **Specifications:**  
- **Logic Type:** Magnitude Comparator  
- **Technology Family:** HC (High-Speed CMOS)  
- **Supply Voltage Range:** 2V to 6V  
- **Operating Temperature Range:** -40°C to 85°C  
- **Package Type:** SOIC (DW)  
- **Number of Pins:** 20  
- **Output Type:** Push-Pull  
- **Propagation Delay:** 14 ns (typical) at 5V  
- **Input Capacitance:** 3.5 pF (typical)  
- **Current - Quiescent (Iq):** 4 µA (max)  
- **Current - Output High, Low:** ±7.8 mA  

### **Description:**  
The SN74HC688DW is an 8-bit magnitude comparator from Texas Instruments. It compares two 8-bit binary or BCD words and provides outputs indicating whether the words are equal, greater than, or less than each other. It features a cascadable enable input for expansion to larger word sizes.  

### **Features:**  
- **8-Bit Comparison:** Compares two 8-bit words (A and B).  
- **Active-Low Output:** Provides an active-low output when A = B.  
- **Cascadable:** Enable input (G) allows expansion for larger word comparisons.  
- **Wide Operating Voltage:** Supports 2V to 6V operation.  
- **Low Power Consumption:** CMOS technology ensures minimal power usage.  
- **High Noise Immunity:** Typical of HC family devices.  
- **Schmitt-Trigger Inputs:** Improves noise rejection on inputs.  

This device is commonly used in arithmetic operations, control systems, and digital logic applications.

Application Scenarios & Design Considerations

8-Bit Identity Comparators

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