PCA8550
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/Pentium II™ systems Pentium II is a registered trademark of Intel Corporation
