| Parameters | 
                                                                                                            
                                            | Mounting Type | Surface Mount | 
                                                                            
                                            | Package / Case | 20-SOIC (0.209, 5.30mm Width) | 
                                                                            
                                            | Supplier Device Package | 20-SOP | 
                                                                            
                                            | Operating Temperature | -40°C~85°C | 
                                                                            
                                            | Packaging | Tape & Reel (TR) | 
                                                                            
                                            | Published | 2005 | 
                                                                            
                                            | Series | 74HC | 
                                                                            
                                            | Part Status | Obsolete | 
                                                                            
                                            | Moisture Sensitivity Level (MSL) | 1 (Unlimited) | 
                                                                            
                                            | Type | Identity Comparator | 
                                                                            
                                            | Voltage - Supply | 2V~6V | 
                                                                            
                                            | Base Part Number | 74HC688 | 
                                                                            
                                            | Output | Active Low | 
                                                                            
                                            | Number of Bits | 8 | 
                                                                            
                                            | Current - Quiescent (Iq) | 8μA | 
                                                                            
                                            | Current - Output High, Low | 5.2mA 5.2mA | 
                                                                            
                                            | Max Propagation Delay @ V, Max CL | 30ns @ 6V, 50pF | 
                                                                            
                                            | Output Function | A=B | 
                                                                                                    
                            
                         
                                                MM74HC688SJX Overview
Using materials from Tape & Reel (TR), the packaging is made.Electronic manufacturers are well aware of the 20-SOIC (0.209, 5.30mm Width) because of its low package cost.8 Bits are used in the design of this electronic part.74HC Series offers outstanding performance-cost ratios.There is an electronic component mounted in the way of Surface Mount.In this case, Active Low is the electrical device's output.Providing a 2V~6V Supply Voltage ensures that the device operates normally.Reliability is ensured by using the Operating Temperature of -40°C~85°C.Application grade Identity Comparator Types are available.With the High/Low output current of 5.2mA 5.2mA, it features maximum design flexibility.Based on the Base Part Number, related parts can be identified.20-SOP serves as its Supplier Device Package.
MM74HC688SJX Features
20-SOIC (0.209, 5.30mm Width) package
8 Bits
74HC series
MM74HC688SJX Applications
There are a lot of ON Semiconductor MM74HC688SJX  applications of comparators. 
- Process contollenr
- “Time out" timer for consume-appication industrial controls
- Servo Motor Controls
- Communications digltal frequency synthesizers: VHF, UHF, FM, AM, etc.
- Servo motor controls
- Fixed or programmable irequency division
- Companion Appliceation Nole, ICAN-6374, "Application of the CMOS CD4059A Programmable Divide-by-N Counter in FM and Ctizens Band Transceiver Digital Tuners"