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PCA8550 - 4-bit multiplexed/1-bit latched 5-bit I2C EEPROM

Datasheet Summary

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.

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.

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Datasheet preview – PCA8550

Datasheet Details

Part number PCA8550
Manufacturer NXP
File Size 87.96 KB
Description 4-bit multiplexed/1-bit latched 5-bit I2C EEPROM
Datasheet download datasheet PCA8550 Datasheet
Additional preview pages of the PCA8550 datasheet.

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Full PDF Text Transcription

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INTEGRATED CIRCUITS PCA8550 4-bit multiplexed/1-bit latched 5-bit I2C EEPROM Product specification 1998 Sep 29 Philips Semiconductors Philips Semiconductors Product specification 4-bit multiplexed/1-bit latched 5-bit I2C EEPROM PCA8550 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.
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