| Parameters | 
                                
                                                                                                            
                                            | Mounting Type | 
                                            Surface Mount | 
                                        
                                                                            
                                            | Package / Case | 
                                            28-TSSOP (0.173, 4.40mm Width) | 
                                        
                                                                            
                                            | Surface Mount | 
                                            YES | 
                                        
                                                                            
                                            | Operating Temperature | 
                                            0°C~70°C | 
                                        
                                                                            
                                            | Packaging | 
                                            Tube | 
                                        
                                                                            
                                            | JESD-609 Code | 
                                            e0 | 
                                        
                                                                            
                                            | Pbfree Code | 
                                            no | 
                                        
                                                                            
                                            | Part Status | 
                                            Obsolete | 
                                        
                                                                            
                                            | Moisture Sensitivity Level (MSL) | 
                                            1 (Unlimited) | 
                                        
                                                                            
                                            | Number of Terminations | 
                                            9 | 
                                        
                                                                            
                                            | Type | 
                                            SCSI, LVD, SE | 
                                        
                                                                            
                                            | Terminal Finish | 
                                            TIN LEAD | 
                                        
                                                                            
                                            | Voltage - Supply | 
                                            2.7V~5.5V | 
                                        
                                                                            
                                            | Terminal Position | 
                                            DUAL | 
                                        
                                                                            
                                            | Terminal Form | 
                                            GULL WING | 
                                        
                                                                            
                                            | Peak Reflow Temperature (Cel) | 
                                            240 | 
                                        
                                                                            
                                            | Number of Functions | 
                                            1 | 
                                        
                                                                            
                                            | Terminal Pitch | 
                                            0.65mm | 
                                        
                                                                            
                                            | Time@Peak Reflow Temperature-Max (s) | 
                                            20 | 
                                        
                                                                            
                                            | Pin Count | 
                                            28 | 
                                        
                                                                            
                                            | JESD-30 Code | 
                                            R-PDSO-G28 | 
                                        
                                                                            
                                            | Qualification Status | 
                                            COMMERCIAL | 
                                        
                                                                            
                                            | Differential Output | 
                                            YES | 
                                        
                                                                            
                                            | Number of Signal Lines | 
                                            9 | 
                                        
                                                                            
                                            | Pull-up Resistance-Nom | 
                                            105Ohm | 
                                        
                                                                            
                                            | Height Seated (Max) | 
                                            1.1mm | 
                                        
                                                                            
                                            | Width | 
                                            4.4mm | 
                                        
                                                                            
                                            | RoHS Status | 
                                            Non-RoHS Compliant | 
                                        
                                                                                                    
                            
                         
                                                DS2120E Overview
A 9 termination consists of terminating transmission lines with a device matching the line's characteristic impedance. 28-TSSOP (0.173, 4.40mm Width) is well known for its low package cost in the electronics industry. Tube's packaging follows his material specifications. Using Surface Mount, it's mounted on a PCB. There should not be an increase in Operating Temperature over 0°C~70°C. This is a standard-qualified material. There is a 2.7V~5.5V Supply Voltage provided to ensure normal operation. For specific purposes, 28 pins are included. It can be a public or a private signal or communication line and its sole purpose is for transmission of signals and intelligence. 
DS2120E Features
9 terminations
Tube package
28 pin count
 9 signal lines
DS2120E Applications
There are a lot of Rochester Electronics, LLC DS2120E Signal Terminators applications. 
- Notebooks
 - Telecommunication Equipment
 - Data Networking
 - Programmable logic controller
 - Desktop PCs 
 - mainframes
 - personal computers
 - Set-top boxes
 - Optical disk drives
 - Data Networking