| Parameters | 
                                
                                                                                                            
                                            | Number of Pins | 
                                            20 | 
                                        
                                                                            
                                            | JESD-609 Code | 
                                            e3 | 
                                        
                                                                            
                                            | Pbfree Code | 
                                            yes | 
                                        
                                                                            
                                            | Moisture Sensitivity Level (MSL) | 
                                            1 | 
                                        
                                                                            
                                            | Number of Terminations | 
                                            20 | 
                                        
                                                                            
                                            | Terminal Finish | 
                                            Matte Tin (Sn) | 
                                        
                                                                            
                                            | Max Operating Temperature | 
                                            85°C | 
                                        
                                                                            
                                            | Min Operating Temperature | 
                                            -40°C | 
                                        
                                                                            
                                            | Additional Feature | 
                                            WITH PULLUP RESISTORS ON B INPUTS; CASCADABLE | 
                                        
                                                                            
                                            | Subcategory | 
                                            Arithmetic Circuits | 
                                        
                                                                            
                                            | Technology | 
                                            CMOS | 
                                        
                                                                            
                                            | Terminal Position | 
                                            DUAL | 
                                        
                                                                            
                                            | Terminal Form | 
                                            GULL WING | 
                                        
                                                                            
                                            | Peak Reflow Temperature (Cel) | 
                                            260 | 
                                        
                                                                            
                                            | Number of Functions | 
                                            1 | 
                                        
                                                                            
                                            | Terminal Pitch | 
                                            1.27mm | 
                                        
                                                                            
                                            | Reach Compliance Code | 
                                            unknown | 
                                        
                                                                            
                                            | Time@Peak Reflow Temperature-Max (s) | 
                                            NOT SPECIFIED | 
                                        
                                                                            
                                            | Pin Count | 
                                            20 | 
                                        
                                                                            
                                            | Qualification Status | 
                                            Not Qualified | 
                                        
                                                                            
                                            | Polarity | 
                                            Inverting | 
                                        
                                                                            
                                            | Power Supplies | 
                                            3.3/5V | 
                                        
                                                                            
                                            | Temperature Grade | 
                                            INDUSTRIAL | 
                                        
                                                                            
                                            | Max Supply Voltage | 
                                            6V | 
                                        
                                                                            
                                            | Min Supply Voltage | 
                                            2V | 
                                        
                                                                            
                                            | Number of Bits | 
                                            8 | 
                                        
                                                                            
                                            | Propagation Delay | 
                                            9 ns | 
                                        
                                                                            
                                            | Quiescent Current | 
                                            4μA | 
                                        
                                                                            
                                            | Turn On Delay Time | 
                                            9 ns | 
                                        
                                                                            
                                            | Family | 
                                            AC | 
                                        
                                                                            
                                            | Logic IC Type | 
                                            IDENTITY COMPARATOR | 
                                        
                                                                            
                                            | High Level Output Current | 
                                            24mA | 
                                        
                                                                            
                                            | Low Level Output Current | 
                                            24mA | 
                                        
                                                                            
                                            | Height Seated (Max) | 
                                            2.65mm | 
                                        
                                                                            
                                            | Width | 
                                            7.5mm | 
                                        
                                                                            
                                            | RoHS Status | 
                                            RoHS Compliant | 
                                        
                                                                            
                                            | Lead Free | 
                                            Lead Free | 
                                        
                                                                            
                                            | Mount | 
                                            Surface Mount | 
                                        
                                                                            
                                            | Package / Case | 
                                            SOIC | 
                                        
                                                                                                    
                            
                         
                                                74AC520SCX Overview
In order to make transportation easier, it is packaged in SOIC .There are 20 terminals on the comparator.The electrical component here belongs to the Arithmetic Circuits family.As a result, it contains 20  pins.20 pins are available on the comparator.This comparator presents a quiescent current of 4μA .The PCB or other board has a Surface Mount for mounting.A power supply of 3.3/5V is sufficient for the operation of the device.Comparator electronics is not recommended to operate the system at a temperature above 85°C .Temperature lower than -40°C is not suitable for the it.The comparator has a maximum supply voltage of 6V .The comparator is capable of operating at a minimum supply voltage of 2V .
74AC520SCX Features
Quiescent Current: 4μA
74AC520SCX Applications
There are a lot of Fairchild (ON Semiconductor) 74AC520SCX linear comparators  applications. 
- Battery management and protection
 - System control and monitoring
 - Motor drives
 - Self-diagnostics
 - Building automation
 - Automatic Test Equipment
 - Automotive
 - Body Control Modules
 - Window Comparators
 - Power management