| Parameters | 
                                
                                                                                                            
                                            | Number of Bits per Element | 
                                            4 | 
                                        
                                                                            
                                            | Sync/Async | 
                                            Synchronous | 
                                        
                                                                            
                                            | fmax-Min | 
                                            90 MHz | 
                                        
                                                                            
                                            | Count Direction | 
                                            BIDIRECTIONAL | 
                                        
                                                                            
                                            | Clock Edge Trigger Type | 
                                            Positive Edge | 
                                        
                                                                            
                                            | Load/Preset Input | 
                                            YES | 
                                        
                                                                            
                                            | Width | 
                                            5.3mm | 
                                        
                                                                            
                                            | RoHS Status | 
                                            RoHS Compliant | 
                                        
                                                                            
                                            | Lead Free | 
                                            Lead Free | 
                                        
                                                                            
                                            | Mount | 
                                            Surface Mount | 
                                        
                                                                            
                                            | Package / Case | 
                                            SOP | 
                                        
                                                                            
                                            | Number of Pins | 
                                            16 | 
                                        
                                                                            
                                            | Number of Terminations | 
                                            16 | 
                                        
                                                                            
                                            | Max Operating Temperature | 
                                            70°C | 
                                        
                                                                            
                                            | Min Operating Temperature | 
                                            0°C | 
                                        
                                                                            
                                            | Technology | 
                                            TTL | 
                                        
                                                                            
                                            | Terminal Position | 
                                            DUAL | 
                                        
                                                                            
                                            | Terminal Form | 
                                            GULL WING | 
                                        
                                                                            
                                            | Number of Functions | 
                                            1 | 
                                        
                                                                            
                                            | Supply Voltage | 
                                            5V | 
                                        
                                                                            
                                            | Reach Compliance Code | 
                                            unknown | 
                                        
                                                                            
                                            | Number of Elements | 
                                            1 | 
                                        
                                                                            
                                            | Temperature Grade | 
                                            COMMERCIAL | 
                                        
                                                                            
                                            | Max Supply Voltage | 
                                            5.5V | 
                                        
                                                                            
                                            | Min Supply Voltage | 
                                            4.5V | 
                                        
                                                                            
                                            | Propagation Delay | 
                                            11 ns | 
                                        
                                                                            
                                            | Turn On Delay Time | 
                                            22 ns | 
                                        
                                                                            
                                            | Family | 
                                            F/FAST | 
                                        
                                                                            
                                            | Logic Function | 
                                            Counter | 
                                        
                                                                                                    
                            
                         
                                                74F191SJX Overview
This is a device supplied in the SOP package. This configuration uses 16terminations. 5Vis enabled to operate in an extremely flexible manner due to its supply voltage. There are 1 terminations on the device. In the circuit, there are 16pins that connect other parts. It is mounted in the manner of [0]. The F/FASTfamily includes it. Each element in the array stores 4 bits. This device is manufactured in the temperature grade of COMMERCIAL. Despite operating at 70°Cfor extended periods, its electrical characteristics remain stable. Generally, it is designed to operate over a range of temperatures with a lower temperature limit at 0°C. In this case, the maximum voltage available to the device is 5.5V. The device can operate at as low a voltage as 4.5V. 
74F191SJX Features
Embedded in the SOP package
4 bits per element
74F191SJX Applications
There are a lot of Rochester Electronics 74F191SJX Counters & Dividers applications. 
- Timers
 - DIVISION
 - Digital multiplexing and demultiplexing
 - Decade counter/decimal decode display (CD4017B)
 - Counter control/timers
 - SQUARE ROOT
 - VHF, UHF, FM, AM, etc.
 - ANALOG SIGNAL PROCESSING
 - Frequency dividers
 - Clocks