Datasheet Details
| Part number | PCA8550 |
|---|---|
| Manufacturer | NXP Semiconductors |
| File Size | 87.96 KB |
| Description | 4-bit multiplexed/1-bit latched 5-bit I2C EEPROM |
| Datasheet |
 PCA8550 Datasheet
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General Description
The primary function of the 4-bit 2-to-1 I2C multiplexer is to select either a 4-bit input or data from a non-volatile register and drive this value onto the output pins.
One additional non-multiplexed register output is also provided.
Key Features
- 4-bit 2-to-1 multiplexer, 1-bit latch.
- 5-bit internal non-volatile register.
- Override input forces all outputs to logic 0.
- Internal non-volatile register write/readable via I2C bus.
- Write-protect pin enables/disables I2C writes to register.
- 2.5V multiplexed outputs.
- 3.3V non-multiplexed output (latched).
- 5V tolerant inputs.
- Useful for ’jumperless’ configuration of PC motherboards.
- Designed for use in Pentium Pro/Pe.