2 layers49.6 × 49.6 mm
PCA9557D
Texas Instruments
-40℃~+85℃ 10mA 1uA 2.3V~5.5V 25mA 4.1V 400kHz 700mV 8 8 I2C、SMBus No Interrupt Output Push-Pull、Open-drain Reset function、Cascade and address expansion、Built-in LED driver SOIC-16 I/O Expanders ROHS
Extended
- Category
- I, O Expanders
- Package
- SOIC-16
- Pins
- 16
Overview
The PCA9557D is an i, O Expander made by Texas Instruments in a SOIC-16 package with 16 pins. -40℃~+85℃ 10mA 1uA 2.3V~5.5V 25mA 4.1V 400kHz 700mV 8 8 I2C、SMBus No Interrupt Output Push-Pull、Open-drain Reset function、Cascade and address expansion、Built-in LED driver SOIC-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. 16 are in stock at JLCPCB (part C2652321). 6 open-source boards in 5 repositories on GitHub use it.
Symbol
Footprint
Parameters
14- Clock Frequency
- 400kHz
- Current - Output High(IOH)
- 10mA
- Current - Output Low(IOL)
- 25mA
- Features
- Reset function
- Interface
- SMBus
- Interrupt Output
- No Interrupt Output
- Number of I/O
- 8
- Number of Supporting Devices
- 8
- Operating Temperature
- -40℃~+85℃
- Output Logic Level - High
- 4.1V
- Output Logic Level - Low
- 700mV
- Output Type
- Open-drain
- Quiescent Supply Current
- 1uA
- Voltage - Supply
- 2.3V~5.5V
Order codes
3- PCA9557DLCSC C1542491
- PCA9557DRLCSC C2652321
- PCA9557DTLCSC C2669672
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 |
Open-source boards using it
All 6- 2 layers85.1 × 67.3 mm
Lts74x
Vakon84/lts74x
Lts74x was inspired by the following propjects: Integrated circuit tester: https://github.com/Johnlon/integrated-circuit-tester Smart IC Tester: https://github.com/akshaybaweja/Smart-IC-Tester
75 partsMIT - 2 layers
Containment simple
UWCubeSat/minimee-electronics
KiCAD files for the MiniMEE mission, adapted from BONK
61 parts1MIT - 4 layers120 × 75 mm
- 2 layers
- 2 layers
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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?
SOIC-16, with 16 pins. Its footprint is drawn on this page.
Where is the PCA9557D datasheet?
Texas Instruments publishes it: the Datasheet link on this page opens it.
Where can I order the PCA9557D?
JLCPCB lists it as part C2652321, with 16 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 NXP Semiconductors, 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.
Which open-source boards use the PCA9557D?
6 boards in 5 repositories on GitHub; the most starred are listed on this page, with their KiCad files.
Parts like it
8
PCA9557D
SO-16-40℃~+85℃ 2.3V~5.5V 400kHz I2C、SMBus No Interrupt Output Reset function、Cascading and address extension SO-16 I/O Expanders ROHSNXP SemiconductorsI/O Expanders
PCA9555PW
TSSOP-24-40℃~+85℃ 1.1uA 16 2.3V~5.5V 3mA 400kHz 8 I2C、SMBus Interrupt Output Reset function、Cascade and address expansion TSSOP-24 I/O Expanders ROHSNXP SemiconductorsI/O Expanders
AW9523BTQR
TQFN-24-EP(4x4)-40℃~+85℃ 100nA 16 2.4V~5.5V 20mA 4 400kHz 60mV I2C Interrupt Output Push-Pull、Open-drain Reset function、Cascading and address extension、Input anti-jitter、Built-in LED driver、IO level configurable TQFN-24-EP(4x4) I/O Expanders ROHSAWINICI/O Expanders
TCA6416ARTWR
WQFN-24-EP(4x4)-40℃~+85℃ 1.65V~5.5V 10mA 16 2 200mV 25mA 3uA 4.1V 400kHz I2C、SMBus Interrupt Output Push-Pull Reset function、Cascading and address extension、Built-in LED driver、IO level configurable WQFN-24-EP(4x4) I/O Expanders ROHSTexas InstrumentsI/O ExpandersTCA9535PW
TSSOP-24-40℃~+85℃ 1.5uA 1.65V~5.5V 10mA 16 25mA 400kHz 4V 8 I2C、SMBus Interrupt Output Push-Pull Reset function、Cascade and address expansion、Built-in LED driver TSSOP-24 I/O Expanders ROHSTexas InstrumentsI/O ExpandersTCA9555PW
TSSOP-24-40℃~+85℃ 1.65V~5.5V 10mA 16 25mA 3.5uA 400kHz 4V 500mV 8 I2C、SMBus Interrupt Output Push-Pull Reset function、Cascading and address extension、Built-in LED driver TSSOP-24 I/O Expanders ROHSTexas InstrumentsI/O Expanders
TCA6424ARGJR
VQFN-32-EP(5x5)-40℃~+85℃ 1.65V~5.5V 10mA 1uA 2 230mV 24 25mA 4.1V 400kHz I2C、SMBus Interrupt Output Push-Pull Reset function、Cascading and address extension、Built-in LED driver、IO level configurable VQFN-32-EP(5x5) I/O Expanders ROHSTexas InstrumentsI/O ExpandersPCA9539PW
TSSOP-24-40℃~+85℃ 16 1uA 2.3V~5.5V 4 400kHz I2C、SMBus Interrupt Output Reset function、Cascading and address extension TSSOP-24 I/O Expanders ROHSNXP SemiconductorsI/O Expanders