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| Part Number | PCA9555DBR | PCA9557DBR | PCA9555DWR | PCA9554DBR | PCA9555DB | PCA9555DBQR |
|---|---|---|---|---|---|---|
| Manufacturer | Texas Instruments | Texas Instruments | Texas Instruments | Texas Instruments | Texas Instruments | Texas Instruments |
| Product Status | Active | Active | Active | Active | Obsolete | Active |
| Number of I/O | 16 | 8 | 16 | 8 | 16 | 16 |
| Interface | I²C, SMBus | I²C, SMBus | I²C, SMBus | I²C, SMBus | I²C, SMBus | I²C, SMBus |
| Interrupt Output | Yes | No | Yes | Yes | Yes | Yes |
| Features | POR | POR | POR | POR | POR | POR |
| Output Type | Push-Pull | Open Drain, Push-Pull | Push-Pull | Push-Pull | Push-Pull | Push-Pull |
| Current - Output Source/Sink | 10mA, 25mA | 10mA, 25mA | 10mA, 25mA | 10mA, 25mA | 10mA, 25mA | 10mA, 25mA |
| Clock Frequency | 400 kHz | 400 kHz | 400 kHz | 400 kHz | 400 kHz | 400 kHz |
| Voltage - Supply | 2.3V ~ 5.5V | 2.3V ~ 5.5V | 2.3V ~ 5.5V | 2.3V ~ 5.5V | 2.3V ~ 5.5V | 2.3V ~ 5.5V |
| Operating Temperature | -40°C ~ 85°C | -40°C ~ 85°C | -40°C ~ 85°C | -40°C ~ 85°C | -40°C ~ 85°C | -40°C ~ 85°C |
| Mounting Type | Surface Mount | Surface Mount | Surface Mount | Surface Mount | Surface Mount | Surface Mount |
| Package / Case | 24-SSOP (0.209", 5.30mm Width) | 16-SSOP (0.209", 5.30mm Width) | 24-SOIC (0.295", 7.50mm Width) | 16-SSOP (0.209", 5.30mm Width) | 24-SSOP (0.209", 5.30mm Width) | 24-SSOP (0.154", 3.90mm Width) |
| Supplier Device Package | 24-SSOP | 16-SSOP | 24-SOIC | 16-SSOP | 24-SSOP | 24-SSOP |
