| Parameters | 
                                                                                                            
                                            | Low Power Mode | YES | 
                                                                            
                                            | RAM (words) | 128 | 
                                                                            
                                            | Number of Serial I/Os | 2 | 
                                                                            
                                            | Bus Compatibility | 8080; 8080A; 8085; 8086; 8088; Z80; Z8000; 68XX; 65XX; 8051; 68HC11 | 
                                                                            
                                            | Communication Protocol | ASYNC, BIT | 
                                                                            
                                            | Data Encoding/Decoding Method | NRZ | 
                                                                            
                                            | Height | 4.57mm | 
                                                                            
                                            | Length | 16.66mm | 
                                                                            
                                            | Width | 16.66mm | 
                                                                            
                                            | Radiation Hardening | No | 
                                                                            
                                            | REACH SVHC | Unknown | 
                                                                            
                                            | RoHS Status | RoHS Compliant | 
                                                                            
                                            | Lead Free | Lead Free | 
                                                                            
                                            | Mount | Surface Mount | 
                                                                            
                                            | Package / Case | PLCC | 
                                                                            
                                            | Number of Pins | 44 | 
                                                                            
                                            | JESD-609 Code | e3 | 
                                                                            
                                            | Pbfree Code | yes | 
                                                                            
                                            | Number of Terminations | 44 | 
                                                                            
                                            | ECCN Code | EAR99 | 
                                                                            
                                            | Terminal Finish | Matte Tin (Sn) | 
                                                                            
                                            | Max Operating Temperature | 85°C | 
                                                                            
                                            | Min Operating Temperature | -40°C | 
                                                                            
                                            | Subcategory | Serial IO/Communication Controllers | 
                                                                            
                                            | Technology | CMOS | 
                                                                            
                                            | Terminal Position | QUAD | 
                                                                            
                                            | Terminal Form | J BEND | 
                                                                            
                                            | Supply Voltage | 5V | 
                                                                            
                                            | Pin Count | 44 | 
                                                                            
                                            | Operating Supply Voltage | 5V | 
                                                                            
                                            | Power Supplies | 5V | 
                                                                            
                                            | Temperature Grade | INDUSTRIAL | 
                                                                            
                                            | Number of Channels | 2 | 
                                                                            
                                            | Max Supply Voltage | 5.25V | 
                                                                            
                                            | Min Supply Voltage | 4.75V | 
                                                                            
                                            | Number of I/O | 4 | 
                                                                            
                                            | Nominal Supply Current | 15mA | 
                                                                            
                                            | uPs/uCs/Peripheral ICs Type | SERIAL IO/COMMUNICATION CONTROLLER, SERIAL | 
                                                                            
                                            | Propagation Delay | 400 ns | 
                                                                            
                                            | Data Rate | 1 Mbps | 
                                                                            
                                            | Boundary Scan | NO | 
                                                                                                    
                            
                         
                                                XR88C681J-F Overview
The PLCC package is the most cost-effective.The transmission of data takes place over 2 channels.The type SERIAL IO/COMMUNICATION CONTROLLER, SERIAL is used for the uPs, uCs, and peripheral ICs on the board.Configured with 44 terminations.In order for it to operate, a voltage of 5V must be provided.Data is communicated via 2 serial I/Os.An IC with 44 pins is what this device is.A series of similarities lead us to include it in the subcategory of Serial IO/Communication Controllers.The operating temperature should not exceed -40°C to ensure normal work for a long time.Ideally, the operating temperature should not exceed 85°C in order to ensure long-term performance.A device's configuration is based on its 44 pins.A mounting method of Surface Mount is used.By keeping the supply voltage below 5.25V, reliability can be guaranteed.Having a voltage higher than 4.75V can ensure reliability.With power supplies of 5V, electronic designers can use it reliably and efficiently.Its high-efficiency operation depends on a supply voltage of 5V.Data can be transferred using 4 I/Os.
XR88C681J-F Features
2 serial I/Os
Power supplies of 5V
Operating supply voltage of 5V
4 I/Os
XR88C681J-F Applications
There are a lot of Exar Corporation XR88C681J-F UARTs applications. 
- Battery Operated Instruments
- Ethernet Network to Serial Ports
- GPS Systems
- Handheld Terminal
- Factory automation and process control
- Universal PCI Bus Add-in Card
- Portable Appliances
- Cellular Data
- Telecommunication Network Routers
- Multi-port RS-232/RS-422/RS-485 Cards