| Parameters | 
                                
                                                                                                            
                                            | Mounting Type | 
                                            Surface Mount | 
                                        
                                                                            
                                            | Package / Case | 
                                            20-SSOP (0.209, 5.30mm Width) | 
                                        
                                                                            
                                            | Operating Temperature | 
                                            -40°C~85°C | 
                                        
                                                                            
                                            | Packaging | 
                                            Tape & Reel (TR) | 
                                        
                                                                            
                                            | Series | 
                                            74FCT | 
                                        
                                                                            
                                            | Part Status | 
                                            Obsolete | 
                                        
                                                                            
                                            | Moisture Sensitivity Level (MSL) | 
                                            1 (Unlimited) | 
                                        
                                                                            
                                            | Type | 
                                            Identity Comparator | 
                                        
                                                                            
                                            | Voltage - Supply | 
                                            4.75V~5.25V | 
                                        
                                                                            
                                            | Base Part Number | 
                                            74FCT521 | 
                                        
                                                                            
                                            | Output | 
                                            Active Low | 
                                        
                                                                            
                                            | Number of Bits | 
                                            8 | 
                                        
                                                                            
                                            | Current - Quiescent (Iq) | 
                                            10μA | 
                                        
                                                                            
                                            | Current - Output High, Low | 
                                            15mA 48mA | 
                                        
                                                                            
                                            | Max Propagation Delay @ V, Max CL | 
                                            4.5ns @ 5V, 50pF | 
                                        
                                                                            
                                            | Output Function | 
                                            A=B | 
                                        
                                                                                                    
                            
                         
                                                IDT74FCT521CTPYG8 Overview
Tape & Reel (TR)'s materials are used for the packaging.As part of the package 20-SSOP (0.209, 5.30mm Width), it is embedded.Using 8 Bits, this electronic component was designed.74FCT Series' performance-to-cost ratio is excellent.There is an electronic component mounted in the way of Surface Mount.A Active Low value is output by this electrical device.To ensure proper functioning, a 4.75V~5.25V Supply Voltage is provided.Comparator operates wComparatorh the Operating Temperature of  -40°C~85°C to ensure Comparators reliabilComparatory.The Identity Comparator Type qualifies for standard grade applications.With the High/Low output current of 15mA 48mA, it features maximum design flexibility.According to the Base Part Number, its related parts can be founded.
IDT74FCT521CTPYG8 Features
20-SSOP (0.209, 5.30mm Width) package
8 Bits
74FCT series
IDT74FCT521CTPYG8 Applications
There are a lot of Renesas Electronics America Inc. IDT74FCT521CTPYG8  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"
 - Communications digltal frequency synthesizers: VHF, UHF, FM, AM, etc.
 - Servo Motor Controls
 - Process contollenr
 - Servo motor controls
 - “Time out" timer for consume-appication industrial controls
 - Fixed or programmable irequency division