| Parameters | 
                                                                                                            
                                            | Mounting Type | Surface Mount | 
                                                                            
                                            | Package / Case | 16-SOIC (0.209, 5.30mm Width) | 
                                                                            
                                            | Supplier Device Package | 16-SOEIAJ | 
                                                                            
                                            | Operating Temperature | -55°C~125°C | 
                                                                            
                                            | Packaging | Tube | 
                                                                            
                                            | Series | 74HC | 
                                                                            
                                            | Part Status | Obsolete | 
                                                                            
                                            | Moisture Sensitivity Level (MSL) | 3  (168 Hours) | 
                                                                            
                                            | Type | Decoder/Demultiplexer | 
                                                                            
                                            | Voltage - Supply | 2V~6V | 
                                                                            
                                            | Circuit | 1 x 3:8 | 
                                                                            
                                            | Current - Output High, Low | 5.2mA 5.2mA | 
                                                                            
                                            | Voltage Supply Source | Single Supply | 
                                                                            
                                            | Independent Circuits | 1 | 
                                                                            
                                            | RoHS Status | ROHS3 Compliant | 
                                                                                                    
                            
                         
                                                MC74HC138AFG Overview
Due to the lack of space on the board, digital switch is provided in the 16-SOIC (0.209, 5.30mm Width).It is packaged in the way of Tube.Surface Mount is the mounting method digital switch ic uses.The multiplexers uses an analog IC Decoder/Demultiplexer as the analog part of the circuit.When the operating temperature is kept at -55°C~125°C, the machine will not be sensturn signal switchive to external influences.Using a 2V~6V supply voltage provides digital controlled switch's superior flexibility for designers.With the 74HC series, the multiplexers are suitable for a diverse range of applications.
MC74HC138AFG Features
Supplied in the 16-SOIC (0.209, 5.30mm Width) package
MC74HC138AFG Applications
There are a lot of Rochester Electronics, LLC MC74HC138AFG Signal Switches / Multiplexers / Decoders applications. 
- Signal router
- Automatic health monitoring systems
- Analog to digital conversion
- Speed synchronization of multiple motors in industries
- Memory system of computers
- Memory chips
- Audio transmission 
- Steel plants
- Solenoid cooling fan
- Electronically controlled engine system