| Parameters | 
                                                                                                            
                                            | Mount | Surface Mount | 
                                                                            
                                            | Mounting Type | Surface Mount | 
                                                                            
                                            | Package / Case | 16-TSSOP (0.173, 4.40mm Width) | 
                                                                            
                                            | Number of Pins | 16 | 
                                                                            
                                            | Operating Temperature | -55°C~125°C | 
                                                                            
                                            | Packaging | Tape & Reel (TR) | 
                                                                            
                                            | Series | 74AC | 
                                                                            
                                            | Part Status | Obsolete | 
                                                                            
                                            | Moisture Sensitivity Level (MSL) | 1  (Unlimited) | 
                                                                            
                                            | Type | Multiplexer | 
                                                                            
                                            | Voltage - Supply | 2V~6V | 
                                                                            
                                            | Base Part Number | 74AC257 | 
                                                                            
                                            | Circuit | 4 x 2:1 | 
                                                                            
                                            | Number of Circuits | 4 | 
                                                                            
                                            | Throw Configuration | DPST | 
                                                                            
                                            | Propagation Delay | 6 ns | 
                                                                            
                                            | Logic Function | Mux | 
                                                                            
                                            | Number of Inputs | 8 | 
                                                                            
                                            | Current - Output High, Low | 24mA 24mA | 
                                                                            
                                            | Supply Type | Single | 
                                                                            
                                            | Voltage Supply Source | Single Supply | 
                                                                            
                                            | Independent Circuits | 1 | 
                                                                            
                                            | RoHS Status | ROHS3 Compliant | 
                                                                            
                                            | Lead Free | Lead Free | 
                                                                                                    
                            
                         
                                                74AC257TTR Overview
Digital switch is provided in the 16-TSSOP (0.173, 4.40mm Width) for the purpose of saving board space.It is packaged in the way of Tape & Reel (TR).In terms of mounting, digital switch ic uses the Surface Mount method .In the multiplexers, the analog IC Multiplexer is used.When the operating temperature is kept at -55°C~125°C, turn signal switch will not be susceptible to external factors.When digital controlled switch operates at 2V~6V, designers are provided with a greater degree of flexibility.Multiplexers in the 74AC series are suitable for a wide range of applications.The part number for 74AC257 can be used to find its logic switch related parts as well.As a type of supply, Single is employed.With 16 pins, it is configured.The mounting point is Surface Mount.This multiplexer has 8 inputs.To operate the digitalswitch normally, 4 circuits are formed.
74AC257TTR Features
Supplied in the 16-TSSOP (0.173, 4.40mm Width) package
Adopting a supply type of Single
74AC257TTR Applications
There are a lot of STMicroelectronics 74AC257TTR Signal Switches / Multiplexers / Decoders applications. 
- Data distribution
- Medium scale TV wall
- Seven segment displays
- Enabling different rows of memory depending on address in memory chips
- Enabling block of memory depending on address in memory chips
- Speed synchronization of multiple motors in industries
- Make full adder
- Automation system
- Textile mills
- RF-based home automation system