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PCA9559 Datasheet 5-bit multiplexed/1-bit latched 6-bit I2C EEPROM

Manufacturer: NXP Semiconductors

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General Description

The primary function of the 5-bit multiplexer, 1-bit latch is to enable system configuration.

PIN CONFIGURATION 2 I C SCL SDA A1 A0 1 2 3 4 5 6 7 8 9 20 VCC 19 WP 18 OVERRIDE # 17 NON_MUXED_OUT 16 MUX_OUT A 15 MUX_OUT B 14 MUX_OUT C 13 MUX_OUT D 12 MUX_OUT E 11 MUX_SELECT I2C MUX_IN A MUX_IN B MUX_IN C MUX_IN D MUX_IN E GND 10 SW00216 ORDERING INFORMATION PACKAGES 20-Pin Plastic TSSOP TEMPERATURE RANGE 0°C to +70°C ORDER CODE PCA9559 PW DH DRAWING NUMBER SOT360-1 FUNCTIONAL DESCRIPTION When the MUX_SELECT signal is logic 0, the multiplexer will select the data from the non-volatile register to drive on the MUX_OUT pins.

When the MUX_SELECT signal is logic 1, the multiplexer will select the MUX_IN lines to drive on the MUX_OUT pins.

Overview

INTEGRATED CIRCUITS PCA9559 5-bit multiplexed/1-bit latched 6-bit I2C EEPROM Product specification Supersedes data of 1999 Oct 20 2000 Jan 31 Philips Semiconductors Philips Semiconductors Product specification 5-bit.

Key Features

  • 5-bit 2-to-1 multiplexer, 1-bit latch.
  • 6-bit internal non-volatile register.
  • Internal non-volatile register programmable and readable via I2C bus.
  • Override input forces all outputs to logic 0.
  • 5 open drain multiplexed outputs.
  • 1 open drain non-multiplexed (latched) output.
  • 5V and 2.5V tolerant inputs.
  • Useful for ‘jumperless’ configuration of PC motherboards.
  • 2 address pins, allowing up to 4 devices on the I2C bus.

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