| Parameters | 
                                                                                                            
                                            | Mounting Type | Surface Mount | 
                                                                            
                                            | Package / Case | 16-SOIC (0.154, 3.90mm Width) | 
                                                                            
                                            | Supplier Device Package | 16-SOIC | 
                                                                            
                                            | Operating Temperature | -55°C~125°C | 
                                                                            
                                            | Packaging | Tube | 
                                                                            
                                            | Series | 74HC | 
                                                                            
                                            | Part Status | Obsolete | 
                                                                            
                                            | Moisture Sensitivity Level (MSL) | 1  (Unlimited) | 
                                                                            
                                            | Type | Decoder/Demultiplexer | 
                                                                            
                                            | Voltage - Supply | 2V~6V | 
                                                                            
                                            | Circuit | 1 x 2:4 | 
                                                                            
                                            | Current - Output High, Low | 5.2mA 5.2mA | 
                                                                            
                                            | Voltage Supply Source | Single Supply | 
                                                                            
                                            | Independent Circuits | 2 | 
                                                                            
                                            | RoHS Status | ROHS3 Compliant | 
                                                                                                    
                            
                         
                                                CD74HC139ME4 Overview
The reason it is provided is that the board space can be saved by placing digital switch in the 16-SOIC (0.154, 3.90mm Width).Tube is the method used for packaging.digital switch ic uses the method of Surface Mount for mounting.As the analog part, the circuit uses an analog IC Decoder/Demultiplexer.In the case of -55°C~125°C, turn signal switch will not be affected by external factors.Designers have greater flexibility using digital controlled switch when it works with 2V~6V voltage.Multiplexers of the 74HC series can be used in a wide range of applications.
CD74HC139ME4 Features
Supplied in the 16-SOIC (0.154, 3.90mm Width) package
CD74HC139ME4 Applications
There are a lot of Rochester Electronics, LLC CD74HC139ME4 Signal Switches / Multiplexers / Decoders applications. 
- Audio transmission 
- To select different devices in microprocessor input
- Medium scale TV wall
- HDMI applications
- Small scale TV wall
- Code converters
- LVDS 
- Microprocessor instruction decoding
- Data transfer
- Enabling block of memory depending on address in memory chips