The PCA9557 is a silicon CMOS circuit which provides parallel input/output expansion for SMBus and I2C applications.
The PCA9557 consists of an 8-bit input port register, 8-bit output port register, and an I2C/SMBus interface.
| Part number | PCA9557 |
|---|---|
| Manufacturer | NXP Semiconductors |
| File Size | 127.39 KB |
| Description | 8-bit I2C and SMBus I/0 port with reset |
| Datasheet |
 PCA9557 Datasheet
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| Part Number | Description | Manufacturer |
|---|---|---|
| PCA9557 | Remote 8-Bit I2C and SMBus Low-Power I/O Expander | Texas Instruments |
| PCA9554 | Remote 8-Bit I2C AND SMBus I/O Expander | Texas Instruments |
| PCA9554 | 8-bit I2C and SMBus I/O Port | ON Semiconductor |
| PCA9554A | Remote 8-Bit I2C and SMBus I/O Expander | Texas Instruments |
| PCA9555 | Low-voltage 16-bit I2C-bus I/O port | nexperia |
| Part Number | Description |
|---|---|
| PCA9550 | 2-bit I2C LED driver |
| PCA9551 | 8-bit I2C LED driver |
| PCA9552 | 16-bit I2C LED driver |
| PCA9553 | 4-bit I2C LED driver |
| PCA9554 | 8-bit I2C and SMBus I/O port |
The following content is an automatically extracted verbatim text from the original manufacturer datasheet and is provided for reference purposes only.
