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PCA9544APW on a board, in 3D

PCA9544APW

NXP Semiconductors

2.3V~3.6V、4.5V~5.5V I2C、SMBus Interrupt generation、Power-up/reset configuration TSSOP-20 Analog Switches - Special Purpose ROHS

Extended
DatasheetJLCPCBLCSCnxp/PCA9544APW
Category
Interface Specialized
Package
TSSOP-20
Pins
20

Overview

The PCA9544APW is an interface Specialized made by NXP Semiconductors in a TSSOP-20 package with 20 pins. 2.3V~3.6V、4.5V~5.5V I2C、SMBus Interrupt generation、Power-up/reset configuration TSSOP-20 Analog Switches - Special Purpose ROHS.

PCBKit's library has its KiCad symbol (Interface_Expansion:PCA9544APW, from KiCad's library) and its footprint (Package_SO:TSSOP-20_4.4x6.5mm_P0.65mm, from KiCad's library), ready for a KiCad board. 2,559 are in stock at JLCPCB (part C545191). 8 open-source boards in 7 repositories on GitHub use it.

Symbol

A01A12A23INT04SD05SC06INT17SD18SC19VSS10INT211SD212SC213INT314SD315SC316INT17SCL18SDA19VDD20
Interface_Expansion:PCA9544APWFrom KiCad's library

Footprint

1234567891011121314151617181920
Package_SO:TSSOP-20_4.4x6.5mm_P0.65mmFrom KiCad's library

Parameters

3
Features
Interrupt generation
Interface
I2C
Voltage - Supply
2.3V~3.6V

Order codes

1

Pinout

20
The pins of the PCA9544APW
PinNameType
1A0Input
2A1Input
3A2Input
4INT0Input
5SD0Input/output
6SC0Output
7INT1Input
8SD1Input/output
9SC1Output
10VSSPower in
11INT2Input
12SD2Input/output
13SC2Output
14INT3Input
15SD3Input/output
16SC3Output
17INTOpen collector
18SCLInput
19SDAInput/output
20VDDPower in

Open-source boards using it

All 8
  • 4 layers239.4 × 165.7 mmMAXI030, the printed circuit board in 3D

    MAXI030

    aslak3/MAXI030

    MC68030 based expandable computer design

    222 parts38GPL-2.0
  • 6 layers55 × 120 mmBitForge Nano, the printed circuit board in 3D

    BitForge Nano

    WantClueTechnologies/BitForge-Nano

    This project presents a fully open-source Bitcoin mining hardware platform, designed for transparency, modularity, and extensibility.

    220 parts15CERN-OHL-S-2.0
  • 2 layers191.5 × 100 mmHyperNet-2-MainBoard, the printed circuit board in 3D

    HyperNet-2-MainBoard

    TheStaticTurtle/HyperNet

    HyperNet is an 8-in, 8-out open-source audio stagebox based on Ultranet

    232 parts6MIT
  • 2 layers100.9 × 144.5 mmSinthinator, the printed circuit board in 3D

    Sinthinator

    phenax/sinthinator

    A capacitive touch slider based music instrument

    57 parts1
  • 4 layers239.4 × 165.7 mmSpreadout, the printed circuit board in 3D

    Spreadout

    aslak3/MAXI030

    MC68030 based expandable computer design

    199 parts38GPL-2.0
  • 6 layers145 × 355 mmBackplane, the printed circuit board in 3D

    Backplane

    stockmann-lab/shim_amp_hardware_linear

    Hardware related to open-source shim amplifier development for MRI research

    529 parts2
  • 2 layers40.3 × 100 mmDodecamodulator, the printed circuit board in 3D

    Dodecamodulator

    adeboni/eurorack

    This repository stores various eurorack module designs I've made

    109 parts1GPL-3.0
  • 2 layers100 × 100 mmAirPlane, the printed circuit board in 3D

    AirPlane

    velvia-fifty/AudioThings

    DIY audio-related projects of questionable quality and dubious utility; delivered in 30 minutes or less or the next one is free

    20 parts1

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Questions

Is there a KiCad symbol and footprint for the PCA9544APW?

Yes. The symbol is Interface_Expansion:PCA9544APW and the footprint Package_SO:TSSOP-20_4.4x6.5mm_P0.65mm, both drawn on this page. PCBKit places them on a board for you when you design with it.

What package is the PCA9544APW?

TSSOP-20, with 20 pins. Its footprint is drawn on this page.

Where is the PCA9544APW datasheet?

NXP Semiconductors publishes it: the Datasheet link on this page opens it.

Where can I order the PCA9544APW?

JLCPCB lists it as part C545191, with 2,559 in stock; the sellers' links on this page open their listings.

What can replace the PCA9544APW?

Parts like it in the library: the NCA9545-DTSR by NOVOSENSE, the PCA9545APW by NXP Semiconductors, the PCA9544APW by Texas Instruments and the PCA9545APW by Texas Instruments. Check their datasheets: a part that fits the footprint may still differ in its ratings.

Which open-source boards use the PCA9544APW?

8 boards in 7 repositories on GitHub; the most starred are listed on this page, with their KiCad files.

Parts like it

8