| PartNumber | TCA9544APWR | TCA9543ADR | TCA9543APWR |
| Description | Switch ICs - Various 4-Channel I2C and SMBus | Switch ICs - Various 2-Channel I2C Bus Switch | Switch ICs - Various 2CH I2C BusSwtch w/ Interrpt Logic-Reset |
| Manufacturer | Texas Instruments | Texas Instruments | Texas Instruments |
| Product Category | Switch ICs - Various | Switch ICs - Various | Switch ICs - Various |
| RoHS | Y | Y | Y |
| Product | Bidirectional Translating Switches | - | - |
| Number of Switches | 4 Switch | - | - |
| On Resistance Max | 16 Ohms | - | - |
| Operating Supply Voltage | 1.65 V to 5.5 V | - | - |
| Minimum Operating Temperature | - 40 C | - 40 C | - 40 C |
| Maximum Operating Temperature | + 85 C | + 85 C | + 85 C |
| Mounting Style | SMD/SMT | SMD/SMT | SMD/SMT |
| Package / Case | TSSOP-20 | SOIC-14 | TSSOP-14 |
| Packaging | Reel | Reel | Reel |
| Series | TCA9544A | TCA9543A | TCA9543A |
| Brand | Texas Instruments | Texas Instruments | Texas Instruments |
| Supply Current Max | 50 uA | - | - |
| Pd Power Dissipation | 400 mW | - | - |
| Product Type | Switch ICs - Various | Switch ICs - Various | Switch ICs - Various |
| Factory Pack Quantity | 2000 | 2500 | 2000 |
| Subcategory | Switch ICs | Switch ICs | Switch ICs |
| Supply Voltage Max | 5.5 V | - | - |
| Supply Voltage Min | 1.65 V | - | - |
| Unit Weight | 0.002638 oz | 0.004586 oz | 0.002018 oz |