| Parameters | 
                                
                                                                                                            
                                            | Mounting Type | 
                                            Surface Mount | 
                                        
                                                                            
                                            | Package / Case | 
                                            20-TSSOP (0.173, 4.40mm Width) | 
                                        
                                                                            
                                            | Surface Mount | 
                                            YES | 
                                        
                                                                            
                                            | Operating Temperature | 
                                            -40°C~85°C | 
                                        
                                                                            
                                            | Packaging | 
                                            Tape & Reel (TR) | 
                                        
                                                                            
                                            | Series | 
                                            74ACT | 
                                        
                                                                            
                                            | JESD-609 Code | 
                                            e3 | 
                                        
                                                                            
                                            | Pbfree Code | 
                                            yes | 
                                        
                                                                            
                                            | Part Status | 
                                            Obsolete | 
                                        
                                                                            
                                            | Moisture Sensitivity Level (MSL) | 
                                            1 (Unlimited) | 
                                        
                                                                            
                                            | Number of Terminations | 
                                            20 | 
                                        
                                                                            
                                            | Type | 
                                            Identity Comparator | 
                                        
                                                                            
                                            | Terminal Finish | 
                                            MATTE TIN | 
                                        
                                                                            
                                            | Additional Feature | 
                                            CASCADABLE | 
                                        
                                                                            
                                            | Technology | 
                                            CMOS | 
                                        
                                                                            
                                            | Voltage - Supply | 
                                            4.5V~5.5V | 
                                        
                                                                            
                                            | Terminal Position | 
                                            DUAL | 
                                        
                                                                            
                                            | Terminal Form | 
                                            GULL WING | 
                                        
                                                                            
                                            | Peak Reflow Temperature (Cel) | 
                                            260 | 
                                        
                                                                            
                                            | Number of Functions | 
                                            1 | 
                                        
                                                                            
                                            | Supply Voltage | 
                                            5V | 
                                        
                                                                            
                                            | Terminal Pitch | 
                                            0.65mm | 
                                        
                                                                            
                                            | Reach Compliance Code | 
                                            unknown | 
                                        
                                                                            
                                            | Time@Peak Reflow Temperature-Max (s) | 
                                            NOT SPECIFIED | 
                                        
                                                                            
                                            | Output | 
                                            Active Low | 
                                        
                                                                            
                                            | Pin Count | 
                                            20 | 
                                        
                                                                            
                                            | JESD-30 Code | 
                                            R-PDSO-G20 | 
                                        
                                                                            
                                            | Qualification Status | 
                                            COMMERCIAL | 
                                        
                                                                            
                                            | Supply Voltage-Max (Vsup) | 
                                            5.5V | 
                                        
                                                                            
                                            | Supply Voltage-Min (Vsup) | 
                                            4.5V | 
                                        
                                                                            
                                            | Number of Bits | 
                                            8 | 
                                        
                                                                            
                                            | Family | 
                                            AC | 
                                        
                                                                            
                                            | Current - Quiescent (Iq) | 
                                            4μA | 
                                        
                                                                            
                                            | Current - Output High, Low | 
                                            24mA 24mA | 
                                        
                                                                            
                                            | Max Propagation Delay @ V, Max CL | 
                                            10ns @ 5V, 50pF | 
                                        
                                                                            
                                            | Propagation Delay (tpd) | 
                                            11 ns | 
                                        
                                                                            
                                            | Output Function | 
                                            A=B | 
                                        
                                                                            
                                            | Height Seated (Max) | 
                                            1.2mm | 
                                        
                                                                            
                                            | Length | 
                                            6.5mm | 
                                        
                                                                            
                                            | Width | 
                                            4.4mm | 
                                        
                                                                            
                                            | RoHS Status | 
                                            ROHS3 Compliant | 
                                        
                                                                                                    
                            
                         
                                                74ACT521MTCX Overview
Material from Tape & Reel (TR) is used in the packaging.Known for its low package costs, the 20-TSSOP (0.173, 4.40mm Width) is a popular electronic component.8 Bits were used to design this electronic part.A great value because of its performance-cost ratio, the 74ACT Series has a lot to offer.Electronic part Surface Mount is mounted here.Using this electrical device, Active Low is the output.This device is equipped with a 4.5V~5.5V Supply Voltage so it can operate normally.Reliability is ensured by using the Operating Temperature of -40°C~85°C.The Identity Comparator Type qualifies for standard grade applications.Featuring a variety of output currents, 24mA 24mA allows for maximum design flexibility.A 20 termination consists of terminating transmission lines with a device matching the line's characteristic impedance.Comparator is equipped wComparatorh  1 Functions.Supply Voltage 5V powers the device.Count of 20 pins is provided.This electronic device belongs to the family of  AC.In this case, Vsup reaches a maximum level.Comparator is important that the Supply Voltage (Vsup) is greater than 4.5V.As an example, CASCADABLE is among the additions.
74ACT521MTCX Features
20-TSSOP (0.173, 4.40mm Width) package
8 Bits
74ACT series
20 terminations
1 Functions 
20 pin count
74ACT521MTCX Applications
There are a lot of Rochester Electronics, LLC 74ACT521MTCX  applications of comparators. 
- Companion Appliceation Nole, ICAN-6374, "Application of the CMOS CD4059A Programmable Divide-by-N Counter in FM and Ctizens Band Transceiver Digital Tuners"
 - Process contollenr
 - Communications digltal frequency synthesizers: VHF, UHF, FM, AM, etc.
 - Servo Motor Controls
 - “Time out" timer for consume-appication industrial controls
 - Fixed or programmable irequency division
 - Servo motor controls