| 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 | Tape & Reel (TR) | 
                                                                            
                                            | Series | 74HC | 
                                                                            
                                            | Part Status | Obsolete | 
                                                                            
                                            | Moisture Sensitivity Level (MSL) | 3  (168 Hours) | 
                                                                            
                                            | Type | Data Selector/Multiplexer | 
                                                                            
                                            | Voltage - Supply | 2V~6V | 
                                                                            
                                            | Circuit | 4 x 2:1 | 
                                                                            
                                            | Current - Output High, Low | 7.8mA 7.8mA | 
                                                                            
                                            | Voltage Supply Source | Single Supply | 
                                                                            
                                            | Independent Circuits | 1 | 
                                                                            
                                            | RoHS Status | ROHS3 Compliant | 
                                                                                                    
                            
                         
                                                MC74HC157AFELG Overview
In order to conserve board space, digital switch is included in the 16-SOIC (0.209, 5.30mm Width).Tape & Reel (TR) represents its packaging.digital switch ic uses the method of Surface Mount for mounting.The multiplexers uses an analog IC Data Selector/Multiplexer as the analog part of the circuit.The operating temperature will not be affected by external factors when turn signal switch is set to -55°C~125°C.Designers have greater flexibility when digital controlled switch operates at a 2V~6V supply voltage.Multiplexers in the 74HC series are suitable for a wide range of applications.
MC74HC157AFELG Features
Supplied in the 16-SOIC (0.209, 5.30mm Width) package
MC74HC157AFELG Applications
There are a lot of Rochester Electronics, LLC MC74HC157AFELG Signal Switches / Multiplexers / Decoders applications. 
- A robotic vehicle with the metal detector
- Enabling different rows of memory depending on address in memory chips
- Data bus control
- Data distribution
- Computer memory
- Paper plants
- Telephone network
- Electronic circuits
- Make half adder 
- Microprocessor input/output systems