Exhibit 21

SUBSIDIARIES OF REGISTRANT

INTERSIL CORPORATION

SUBSIDIARIES OF REGISTRANT

AT FEBRUARY 15, 2008



|                                           |  |                                             
|------------------------------------------ |  | --------------------------------------------
|Subsidiary Name                            |  | State or Other Jurisdiction of Incorporation
|U.S.                                       |  |                                             
|Intersil Communications, Inc.              |  | Delaware                                    
|Elantec Semiconductor, Inc.                |  | Delaware                                    
|Intersil Americas Inc.                     |  | Delaware                                    
|Intersil Investment Company                |  | Delaware                                    
|Xicor LLC                                  |  | Delaware                                    
|Poweready, Inc.                            |  | Delaware                                    
|Analog Integration Partners, LLC           |  | Delaware                                    
|Xicor, Inc. Integration Holding Company    |  | Delaware                                    
|Planet ATE, Inc.                           |  | California                                  
|                                           | 
|Asia                                       |  |                                             
|Elantec Semiconductor Malaysia Sdn. Bhd.   |  | Malaysia                                    
|Intersil China Limited                     |  | Hong Kong, PRC                              
|Intersil K. K.                             |  | Japan                                       
|Intersil YH                                |  | Korea                                       
|Intersil Advanced Technology (Labuan) Ltd. |  | Federation of Labuan, Malaysia              
|Intersil Services Company Sdn. Bhd.        |  | Malaysia                                    
|Intersil Pte. Ltd.                         |  | Singapore                                   
|Intersil Ltd.                              |  | Taiwan                                      
|Intersil Analog Services Pvt. Ltd.         |  | India                                       
|                                           | 
|Europe                                     |  |                                             
|Intersil S.A.                              |  | Belgium                                     
|Intersil Sarl                              |  | France                                      
|Intersil GmbH                              |  | Germany                                     
|Intersil Srl                               |  | Italy                                       
|Intersil Holding GmbH                      |  | Switzerland                                 
|Intersil Europe Sarl                       |  | Switzerland                                 
|Intersil Wireless B.V.                     |  | The Netherlands                             
|Intersil Limited                           |  | United Kingdom                              
|Xicor, GmbH                                |  | Germany                                     
|Intersil Luxembourg Participations Sarl    |  | Luxembourg                                  
|Elantec Semiconductor U.K. Limited         |  | United Kingdom                              
|Intersil Swiss Holding Sarl                |  | Switzerland/Delaware