4-Bit Multiplexed/1-Bit Latched 5-Bit I2C EEPROM DIP Switch

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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. The non-multiplexed output is latched to prevent output value changes during I²C writes to the non-volatile register. A write protect input is provided to enable/disable the ability to write to the non-volatile register. An "override" input feature forces all outputs to logic 0.

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Data Sheet

Application Notes

Product Details

Block Diagram

PCA8550 Block Diagram

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Features

Key Features

4-bit 2-to-1 multiplexer, 1-bit latch DIP switch
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
2.5 V multiplexed outputs
3.3 V non-multiplexed output (latched)
5 V tolerant inputs
Useful for "jumperless" configuration of PC motherboards
Designed for use in Pentium Pro/Pentium II systems

Buy/Parametrics

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Documentation

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1-5 of 11 documents

Data Sheet
4-bit multiplexed/1-bit latched 5-bit I2C EEPROM DIP switch

PDFRev 7.0Apr 8, 2015559.8 KBPCA8550English
Application Note
AN10216

PDFRev 1.0Mar 27, 20034.3 MBAN10216English
Application Note
AN250_1

PDFRev 1.0Oct 1, 199861.3 KBAN250_1English
User Guide
I2C-bus specification and user manual

PDFRev 7.0Oct 1, 2021751.0 KBUM10204English, 日本語
User Guide
PCA9632 demonstration board OM13269

PDFRev 1.0Feb 6, 2012749.6 KBUM10528English

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Package Information
plastic, thin shrink small outline package; 16 leads; 0.65 mm pitch; 5 mm x 4.4 mm x 1.1 mm body

PDFRev 1.2Dec 10, 2019298.1 KBSOT403-1English
Package Information
plastic shrink small outline package; 16 leads; body width 5.3 mm

PDFRev 1.0Feb 8, 2016313.1 KBSOT338-1English
Packing Information
TSSOP16; Reel pack; SMD, 13" Q1/T1 Standard product orientation Orderable part number ending ,118 or J Ordering code (12NC) ending 118

PDFRev 1.0Apr 8, 2013223.6 KBSOT403-1_118English
Supporting Information
Footprint for Wave Soldering

PDFRev 1.0Oct 8, 20098.3 KBSO-SOJ-WAVEEnglish
Supporting Information
Footprint for reflow soldering

PDFRev 1.0Oct 8, 200916.4 KBSSOP-TSSOP-VSO-REFLOWEnglish
Supporting Information
Footprint for reflow soldering

PDFRev 1.0Oct 8, 20098.8 KBSO-SOJ-REFLOWEnglish

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Design Resources

Design Files

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5 design files

Receive the full breakdown. See the product footprint and more in the eCad file.

Models
PCA8550DB IBIS model

IBSRev 1.0Jul 25, 2014 00:00:0082.3 KBPCA8550P
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Models
PCA8550PW IBIS model

IBSRev 1.0Jul 25, 2014 00:00:0082.3 KBPCA8550T
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Models
PCA8550D IBIS model

IBSRev 1.0Jul 25, 2014 00:00:0082.3 KBPCA8550S
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Symbols and Footprints
PCA8550PW-TSSOP16-CAD Symbol and PCB Footprint – BXL File

ZIPRev 1May 21, 2020 15:01:0038.9 KBPCA8550PW-TSSOP16-BXL
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Symbols and Footprints
PCA8550DB-SO16-BXL-CAD Symbol and PCB Footprint – BXL File

ZIPRev 1May 21, 2020 15:01:0050.7 KBPCA8550DB-SO16-BXL
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Engineering Services

To get further assistance directly from NXP, please see our Engineering Services.

2 engineering services

^{Independent Design House (IDH)}
Hardware Design Services

By TAGnology RFID GmbH GoldHQ: Voitsberg, AustriaSupporting Regions: EMEA
^{Independent Design House (IDH)}
Embedded Software Design

By TAGnology RFID GmbH GoldHQ: Voitsberg, AustriaSupporting Regions: EMEA

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Other NXP Products

4-Bit Multiplexed/1-Bit Latched 5-Bit I²C EEPROM DIP Switch

Product Details

Block Diagram

PCA8550 Block Diagram

Features

Key Features

Buy/Parametrics

Documentation

Filter by

4-bit multiplexed/1-bit latched 5-bit I2C EEPROM DIP switch

AN10216

AN250_1

I2C-bus specification and user manual

PCA9632 demonstration board OM13269

plastic, thin shrink small outline package; 16 leads; 0.65 mm pitch; 5 mm x 4.4 mm x 1.1 mm body

plastic shrink small outline package; 16 leads; body width 5.3 mm

TSSOP16; Reel pack; SMD, 13" Q1/T1 Standard product orientation Orderable part number ending ,118 or J Ordering code (12NC) ending 118

Footprint for Wave Soldering

Footprint for reflow soldering

Footprint for reflow soldering

Design Resources

Design Files

Filter by

PCA8550DB IBIS model

PCA8550PW IBIS model

PCA8550D IBIS model

PCA8550PW-TSSOP16-CAD Symbol and PCB Footprint – BXL File

PCA8550DB-SO16-BXL-CAD Symbol and PCB Footprint – BXL File

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Engineering Services

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Hardware Design Services

Embedded Software Design

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