Skip to the content
PCBKitNew board
PCA9557D, in 3D

PCA9557D

NXP Semiconductors

-40℃~+85℃ 2.3V~5.5V 400kHz I2C、SMBus No Interrupt Output Reset function、Cascading and address extension SO-16 I/O Expanders ROHS

Extended
Category
I, O Expanders
Package
SO-16
Pins
16

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

SCL1SDA2A03A14A25IO06IO17VSS8IO29IO310IO411IO512IO613IO714RESET15VDD16
Interface_Expansion:PCA9557DFrom KiCad's library

Footprint

12345678910111213141516
Package_SO:SO-16_3.9x9.9mm_P1.27mmFrom KiCad's library

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

Pinout

16
The pins of the PCA9557D
PinNameType
1SCLInput
2SDAInput/output
3A0Input
4A1Input
5A2Input
6IO0Input/output
7IO1Input/output
8VSSPower in
9IO2Input/output
10IO3Input/output
11IO4Input/output
12IO5Input/output
13IO6Input/output
14IO7Input/output
15RESETInput
16VDDPower in

Show this part on your page

A live frame, for any web page
<iframe src="https://pcbkit.io/embed/parts/nxp/PCA9557D" title="PCA9557D in PCBKit" width="100%" height="480" style="border:0;border-radius:12px" allow="fullscreen" loading="lazy"></iframe>
A picture
<img src="https://pcbkit.io/embed/parts/nxp/PCA9557D.jpg" alt="PCA9557D" width="1200" height="900">
A picture that opens the part, for a README
[![PCA9557D](https://pcbkit.io/embed/parts/nxp/PCA9557D.jpg?size=s)](https://pcbkit.io/parts/nxp/PCA9557D)

Questions

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.

Parts like it

8