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SN74HC21N from TI,Texas Instruments

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SN74HC21N

Manufacturer: TI

Dual 4-Input Positive-AND Gates

Partnumber Manufacturer Quantity Availability
SN74HC21N TI 5664 In Stock

Description and Introduction

Dual 4-Input Positive-AND Gates The SN74HC21N is a dual 4-input positive-AND gate manufactured by Texas Instruments (TI).  

### **Specifications:**  
- **Logic Type:** AND Gate  
- **Number of Circuits:** 2  
- **Number of Inputs per Gate:** 4  
- **Supply Voltage Range:** 2V to 6V  
- **High-Level Output Current:** -5.2 mA  
- **Low-Level Output Current:** 5.2 mA  
- **Propagation Delay Time:** 15 ns (typical) at 5V  
- **Operating Temperature Range:** -40°C to +85°C  
- **Package / Case:** PDIP-14  

### **Description:**  
The SN74HC21N integrates two independent 4-input AND gates in a single package. It operates over a wide voltage range (2V to 6V) and is designed for high-speed logic applications.  

### **Features:**  
- **Wide Operating Voltage Range:** 2V to 6V  
- **High Noise Immunity**  
- **Low Power Consumption**  
- **Balanced Propagation Delays**  
- **Schmitt-Trigger Inputs (for improved noise rejection)**  
- **Compatible with TTL Inputs**  
- **Standard PDIP-14 Package**  

This device is commonly used in digital logic circuits requiring multiple-input AND functionality.

Application Scenarios & Design Considerations

Dual 4-Input Positive-AND Gates

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