2 layers58.4 × 50 mm
Overview
The PCA9545AD is an interface Specialized made by NXP Semiconductors in a SO-20-300mil package with 20 pins. 2.3V~3.6V、4.5V~5.5V I2C SO-20-300mil Interface - Specialized ROHS.
PCBKit's library has its KiCad symbol (EasyEDA_Cloud:PCA9545APW,118, from EasyEDA) and its footprint (Package_SO:SOIC-20W_7.5x12.8mm_P1.27mm, from KiCad's library), ready for a KiCad board. 9 are in stock at JLCPCB (part C2674075). 3 open-source boards in 3 repositories on GitHub use it.
Symbol
Footprint
Parameters
6- Features
- Interrupt generation
- Interface
- I2C
- Operating Temperature
- -40℃~+85℃
- Quiescent Supply Current
- 300nA
- Supply Current
- 100uA
- Voltage - Supply
- 2.3V~3.6V
Order codes
1- PCA9545AD,118LCSC C2674075
Pinout
20| Pin | Name | Type |
|---|---|---|
| 1 | A0 | Unspecified |
| 2 | A1 | Unspecified |
| 3 | RESET# | Unspecified |
| 4 | INT0# | Unspecified |
| 5 | SD0 | Unspecified |
| 6 | SC0 | Unspecified |
| 7 | INT1# | Unspecified |
| 8 | SD1 | Unspecified |
| 9 | SC1 | Unspecified |
| 10 | VSS | Unspecified |
| 11 | INT2# | Unspecified |
| 12 | SD2 | Unspecified |
| 13 | SC2 | Unspecified |
| 14 | INT3# | Unspecified |
| 15 | SD3 | Unspecified |
| 16 | SC3 | Unspecified |
| 17 | INT# | Unspecified |
| 18 | SCL | Unspecified |
| 19 | SDA | Unspecified |
| 20 | VDD | Unspecified |
Open-source boards using it
All 3- 4 layers180 × 140 mm
- 2 layers35.6 × 19.1 mm
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<iframe src="https://pcbkit.io/embed/parts/nxp/PCA9545AD" title="PCA9545AD in PCBKit" width="100%" height="480" style="border:0;border-radius:12px" allow="fullscreen" loading="lazy"></iframe><img src="https://pcbkit.io/embed/parts/nxp/PCA9545AD.jpg" alt="PCA9545AD" width="1200" height="900">[](https://pcbkit.io/parts/nxp/PCA9545AD)Questions
Is there a KiCad symbol and footprint for the PCA9545AD?
Yes. The symbol is EasyEDA_Cloud:PCA9545APW,118 and the footprint Package_SO:SOIC-20W_7.5x12.8mm_P1.27mm, both drawn on this page. PCBKit places them on a board for you when you design with it.
What package is the PCA9545AD?
SO-20-300mil, with 20 pins. Its footprint is drawn on this page.
Where is the PCA9545AD datasheet?
NXP Semiconductors publishes it: the Datasheet link on this page opens it.
Where can I order the PCA9545AD?
JLCPCB lists it as part C2674075, with 9 in stock; the sellers' links on this page open their listings.
What can replace the PCA9545AD?
Parts like it in the library: the PCF8584T/2 by NXP Semiconductors, the EL1503ACM by ELANTEC, the EL1503ACMZ by ELANTEC and the PCF8584T by NXP Semiconductors. Check their datasheets: a part that fits the footprint may still differ in its ratings.
Which open-source boards use the PCA9545AD?
3 boards in 3 repositories on GitHub; the most starred are listed on this page, with their KiCad files.
Parts like it
8
PCF8584T/2
SO-20-300mil-40℃~+85℃ 1.5mA 4.5V~5.5V Parallel SO-20-300mil Interface - Specialized ROHSNXP SemiconductorsInterface - SpecializedEL1503ACM
SOIC-20-300mil-40℃~+85℃ 5V~12V SOIC-20-300mil Interface - SpecializedELANTECInterface - SpecializedEL1503ACMZ
SOIC-20-300milSOIC-20-300mil Interface - Specialized ROHSELANTECInterface - SpecializedPCF8584T
SOIC-20-300mil-40℃~+85℃ 1.5mA 100Kbps 2.5uA 5V I2C SOIC-20-300mil Interface - Specialized ROHSNXP SemiconductorsInterface - SpecializedPT2262-S
SOP-20-300mil-40℃~+85℃ 100nA 4V~15V SOP-20-300mil Interface - Specialized ROHSPTCInterface - SpecializedPT2264-S20
SOP-20-300mil8V~15V SOP-20-300mil Interface - Specialized ROHSPTCInterface - SpecializedPT2272-L4S
SOP-20-300mil-40℃~+85℃ 100nA 4V~15V SOP-20-300mil Interface - Specialized ROHSPTCInterface - SpecializedPT2272-M4S
SOIC-20-300mil-40℃~+85℃ 100nA 4V~15V Interrupt generation SOIC-20-300mil Interface - Specialized ROHSPTCInterface - Specialized