| Parameters | 
                                                                                                            
                                            | Package / Case | 16-SOIC (0.154, 3.90mm Width) | 
                                                                            
                                            | Supplier Device Package | 16-SOIC | 
                                                                            
                                            | Operating Temperature | 0°C~70°C | 
                                                                            
                                            | Packaging | Tube | 
                                                                            
                                            | Series | 74ALS | 
                                                                            
                                            | Part Status | Obsolete | 
                                                                            
                                            | Moisture Sensitivity Level (MSL) | 1  (Unlimited) | 
                                                                            
                                            | Type | Decoder/Demultiplexer | 
                                                                            
                                            | Voltage - Supply | 4.5V~5.5V | 
                                                                            
                                            | Base Part Number | 74ALS138 | 
                                                                            
                                            | Circuit | 1 x 3:8 | 
                                                                            
                                            | Current - Output High, Low | 400μA 8mA | 
                                                                            
                                            | Voltage Supply Source | Single Supply | 
                                                                            
                                            | Independent Circuits | 1 | 
                                                                            
                                            | Mounting Type | Surface Mount | 
                                                                                                    
                            
                         
                                                DM74ALS138M 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).In this case, it is packaged as Tube.The method digital switch ic adopts for mounting is Surface Mount.For the analog part of the multiplexers, an IC Decoder/Demultiplexer is used.By keeping the operating temperature at 0°C~70°C, turn signal switch will not be affected by external factors.A supply voltage of 4.5V~5.5V provides digital controlled switch's superior flexibility for designers.As a member of 74ALS series, the multiplexers can be used for a wide range of applications.There is a base part number of 74ALS138 which can also be used in order to locate the logic switch that are related to this item.
DM74ALS138M Features
Supplied in the 16-SOIC (0.154, 3.90mm Width) package
DM74ALS138M Applications
There are a lot of ON Semiconductor DM74ALS138M Signal Switches / Multiplexers / Decoders applications. 
- Speed synchronization of multiple motors in industries
- Time division multiplexing system 
- Automatic Monitoring systems
- Microprocessor instruction decoding
- Code converters
- CNC machines
- High-performance memory systems
- Memory system of computers
- PCIe
- Microprocessor input/output systems