
Overview
The PCA9557D is an i, O Expander made by NXP Semiconductors in a SO-16 package with 16 pins. -40℃~+85℃ 2.3V~5.5V 400kHz I2C、SMBus No Interrupt Output Reset function、Cascading and address extension SO-16 I/O Expanders ROHS.
PCBKit's library has its KiCad symbol (Interface_Expansion:PCA9557D, from KiCad's library) and its footprint (Package_SO:SO-16_3.9x9.9mm_P1.27mm, from KiCad's library), ready for a KiCad board. 5 are in stock at JLCPCB (part C5203531).
Symbol
Footprint
Parameters
10- Clock Frequency
- 400kHz
- Current - Output High(IOH)
- 4mA
- Features
- Reset function
- Interface
- I2C
- Interrupt Output
- No Interrupt Output
- Number of I/O
- 8
- Number of Supporting Devices
- 8
- Operating Temperature
- -40℃~+85℃
- Quiescent Supply Current
- 250nA
- Voltage - Supply
- 2.3V~5.5V
Order codes
1- PCA9557D,118LCSC C5203531
Pinout
16| Pin | Name | Type |
|---|---|---|
| 1 | SCL | Input |
| 2 | SDA | Input/output |
| 3 | A0 | Input |
| 4 | A1 | Input |
| 5 | A2 | Input |
| 6 | IO0 | Input/output |
| 7 | IO1 | Input/output |
| 8 | VSS | Power in |
| 9 | IO2 | Input/output |
| 10 | IO3 | Input/output |
| 11 | IO4 | Input/output |
| 12 | IO5 | Input/output |
| 13 | IO6 | Input/output |
| 14 | IO7 | Input/output |
| 15 | RESET | Input |
| 16 | VDD | Power in |
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Is there a KiCad symbol and footprint for the PCA9557D?
Yes. The symbol is Interface_Expansion:PCA9557D and the footprint Package_SO:SO-16_3.9x9.9mm_P1.27mm, both drawn on this page. PCBKit places them on a board for you when you design with it.
What package is the PCA9557D?
SO-16, with 16 pins. Its footprint is drawn on this page.
Where is the PCA9557D datasheet?
NXP Semiconductors publishes it: the Datasheet link on this page opens it.
Where can I order the PCA9557D?
JLCPCB lists it as part C5203531, with 5 in stock; the sellers' links on this page open their listings.
What can replace the PCA9557D?
Parts like it in the library: the PCA9557D by Texas Instruments, the PCA9555PW by NXP Semiconductors, the AW9523BTQR by AWINIC and the TCA6416ARTWR by Texas Instruments. Check their datasheets: a part that fits the footprint may still differ in its ratings.
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