| Parameters | 
                                
                                                                                                            
                                            | Mounting Type | 
                                            Surface Mount | 
                                        
                                                                            
                                            | Package / Case | 
                                            20-SOIC (0.295, 7.50mm Width) | 
                                        
                                                                            
                                            | Surface Mount | 
                                            YES | 
                                        
                                                                            
                                            | Operating Temperature | 
                                            0°C~70°C TA | 
                                        
                                                                            
                                            | Packaging | 
                                            Tape & Reel (TR) | 
                                        
                                                                            
                                            | Published | 
                                            1999 | 
                                        
                                                                            
                                            | Series | 
                                            74F | 
                                        
                                                                            
                                            | JESD-609 Code | 
                                            e4 | 
                                        
                                                                            
                                            | Part Status | 
                                            Obsolete | 
                                        
                                                                            
                                            | Moisture Sensitivity Level (MSL) | 
                                            1  (Unlimited) | 
                                        
                                                                            
                                            | Number of Terminations | 
                                            20 | 
                                        
                                                                            
                                            | Terminal Finish | 
                                            NICKEL PALLADIUM GOLD | 
                                        
                                                                            
                                            | Technology | 
                                            TTL | 
                                        
                                                                            
                                            | Voltage - Supply | 
                                            4.5V~5.5V | 
                                        
                                                                            
                                            | Terminal Position | 
                                            DUAL | 
                                        
                                                                            
                                            | Terminal Form | 
                                            GULL WING | 
                                        
                                                                            
                                            | Peak Reflow Temperature (Cel) | 
                                            260 | 
                                        
                                                                            
                                            | Number of Functions | 
                                            2 | 
                                        
                                                                            
                                            | Supply Voltage | 
                                            5V | 
                                        
                                                                            
                                            | Reach Compliance Code | 
                                            unknown | 
                                        
                                                                            
                                            | Time@Peak Reflow Temperature-Max (s) | 
                                            30 | 
                                        
                                                                            
                                            | Base Part Number | 
                                            74F1244 | 
                                        
                                                                            
                                            | Pin Count | 
                                            20 | 
                                        
                                                                            
                                            | Qualification Status | 
                                            Not Qualified | 
                                        
                                                                            
                                            | Output Type | 
                                            3-State | 
                                        
                                                                            
                                            | Number of Elements | 
                                            2 | 
                                        
                                                                            
                                            | Supply Voltage-Max (Vsup) | 
                                            5.5V | 
                                        
                                                                            
                                            | Load Capacitance | 
                                            50pF | 
                                        
                                                                            
                                            | Number of Ports | 
                                            2 | 
                                        
                                                                            
                                            | Family | 
                                            F/FAST | 
                                        
                                                                            
                                            | Current - Output High, Low | 
                                            15mA 64mA | 
                                        
                                                                            
                                            | Logic Type | 
                                            Buffer, Non-Inverting | 
                                        
                                                                            
                                            | Output Polarity | 
                                            TRUE | 
                                        
                                                                            
                                            | Number of Bits per Element | 
                                            4 | 
                                        
                                                                            
                                            | Propagation Delay (tpd) | 
                                            7.5 ns | 
                                        
                                                                            
                                            | Power Supply Current-Max (ICC) | 
                                            75mA | 
                                        
                                                                            
                                            | Width | 
                                            7.5mm | 
                                        
                                                                            
                                            | RoHS Status | 
                                            ROHS3 Compliant | 
                                        
                                                                                                    
                            
                         
                                                N74F1244D,623 Overview
Logical driver uses a neat 20-SOIC (0.295, 7.50mm Width) package. Tape & Reel (TR) external packaging. Available in Surface Mount. Voltage buffer adopts Buffer, Non-Inverting logic prototype. Buffer IC is fed with a voltage of 4.5V~5.5V. Qualified to operate within 0°C~70°C TA. The high and low logic state output current of logical driver is 15mA 64mA. Logical driver can deal with 3-State output (s). All of the 2 elements are put into use. Digital buffer is one of the 74F series devices. 20 terminations with different functions. Buffer IC reuqires a supply voltage of 5V. Family F/FAST includes the buffer IC . 20 pins are set with the electric part. Enhanced with 2 ports. The bus transceiver employs 4 bits for each element. You can search "74F1244" for other related electrical components. 
N74F1244D,623 Features
N74F1244D,623 Applications
There are a lot of NXP USA Inc. N74F1244D,623 Buffers & Transceivers applications. 
- Bar, KTV wireless entertainment
 - Relays
 - Military satellite communications
 - interconnection between computers
 - Gigabit Ethernet
 - Shortwave receiver
 - Cable network front end
 - 1x/2x Fiber Channel
 - Wireless network systems
 - Portable radio