| Parameters | 
                                                                                                                        
                                                | Mfr | NXP Semiconductors | 
                                                                                    
                                                | Series | Agile | 
                                                                                    
                                                | Package | Bulk | 
                                                                                    
                                                | Product Status | Active | 
                                                                                    
                                                | Number of I/O | 16 | 
                                                                                    
                                                | Interface | I²C, SMBus | 
                                                                                    
                                                | Interrupt Output | Yes | 
                                                                                    
                                                | Features | POR | 
                                                                                    
                                                | Output Type | Open Drain, Push-Pull | 
                                                                                    
                                                | Current - Output Source/Sink | 10mA, 25mA | 
                                                                                    
                                                | Clock Frequency | 400 kHz | 
                                                                                    
                                                | Voltage - Supply | 1.65V ~ 5.5V | 
                                                                                    
                                                | Operating Temperature | -40°C ~ 85°C | 
                                                                                    
                                                | Mounting Type | Surface Mount | 
                                                                                    
                                                | Package / Case | 24-TSSOP (0.173", 4.40mm Width) | 
                                                                                    
                                                | Supplier Device Package | 24-TSSOP | 
                                                                                    
                                                | Other Names | 2156-PCAL9539APW,118 | 
                                                                                    
                                                | Standard Package | 1 | 
                                                                                                                
                                
                             
                                                I/O Expander 16 I²C, SMBus 400 kHz 24-TSSOP