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I/O Expander 8 I2C 400 kHz 16-TSSOP

ISO14001 ISO9001 DUNS

Brands: TI

Mfr.Part #: TCA9538PWR

Datasheet: TCA9538PWR Datasheet (PDF)

Package/Case: TSSOP-16

RoHS Status:

Stock Condition: 4,582 pcs, New Original

Product Type: I/O Expanders

Warranty: 1 Year Ovaga Warranty - Find Out More


*All prices are in USD

Qty Unit Price Ext Price
1 $6.000 $6.000
10 $5.400 $54.000
100 $4.800 $480.000
500 $4.200 $2100.000
1000 $3.600 $3600.000

In Stock: 4,582 PCS

- +

Total : $6.000

excl. VAT

*Products eligible for online ordering ship within 1-2 business days,please contact us for exact shipping times.

Quick Quote

Please submit RFQ for TCA9538PWR or email to us: Email: [email protected], we will contact you within 12 hours.

TCA9538PWR General Description

In summary, the TCA9538PWR stands out as a feature-rich and high-performance I/O expander suitable for a wide range of applications. Its combination of advanced features such as hardware reset functionality, programmable I2C-bus address, low standby current consumption, and low RDS(on) make it an ideal choice for enhancing the functionality and efficiency of microcontroller-based systems. With Texas Instruments' reputation for quality and innovation, the TCA9538PWR offers engineers and designers a reliable solution for expanding I/O capabilities in their electronic designs



  • Advanced sensing capabilities for precise measurements
  • Compact package with high pin density
  • Suitable for automotive, industrial, and medical applications
  • Pin-compatible with previous versions


Parameter Value Parameter Value
Number of I/Os 8 Features Configuration registers, Interrupt pin, Reset pin
Supply voltage (min) (V) 1.65 Supply voltage (max) (V) 5.5
Addresses 4 Rating Catalog
Frequency (max) (MHz) 0.4


Shipping Type Ship Fee Lead Time
DHL DHL $20.00-$40.00 (0.50 KG) 2-5 days
Fedex Fedex $20.00-$40.00 (0.50 KG) 2-5 days
UPS UPS $20.00-$40.00 (0.50 KG) 2-5 days
TNT TNT $20.00-$40.00 (0.50 KG) 2-5 days
EMS EMS $20.00-$40.00 (0.50 KG) 2-5 days
REGISTERED AIR MAIL REGISTERED AIR MAIL $20.00-$40.00 (0.50 KG) 2-5 days

Processing Time:Shipping fee depend on different zone and country.


Terms of payment Hand Fee
Wire Transfer Wire Transfer charge US$30.00 banking fee.
Paypal Paypal charge 4.5% service fee.
Credit Card Credit Card charge 3.5% service fee.
Western Union Western Union charge US.00 banking fee.
Money Gram Money Gram charge US$0.00 banking fee.


1.The electronic components you purchase include 365 Days Warranty, We guarantee product quality.

2.If some of the items you received aren't of perfect quality, we would resiponsibly arrange your refund or replacement. But the items must remain their orginal condition.


  • Product

    Step1 :Product

  • Vacuum packaging

    Step2 :Vacuum packaging

  • Anti-static bag

    Step3 :Anti-static bag

  • Individual packaging

    Step4 :Individual packaging

  • Packaging boxes

    Step5 :Packaging boxes

  • bar-code shipping tag

    Step6 :bar-code shipping tag

All the products will packing in anti-staticbag. Ship with ESD antistatic protection.

Outside ESD packing’s lable will use ourcompany’s information: Part Mumber, Brand and Quantity.

We will inspect all the goods before shipment,ensure all the products at good condition and ensure the parts are new originalmatch datasheet.

After all the goods are ensure no problems afterpacking, we will packing safely and send by global express. It exhibitsexcellent puncture and tear resistance along with good seal integrity.

  • ESD
  • ESD

Part points

  • The TCA9538PWR is an 8-bit I/O expander with I2C interface, providing remote I/O expansion for most microcontroller families via the I2C interface. It features a hardware address pin, allowing multiple devices to share the same I2C bus. It's commonly used in applications requiring additional I/Os, such as LED dimming, keypad scanning, and monitoring.
  • Equivalent

    Some equivalent products of TCA9538PWR chip are PCA9538PWR, MCP23008, and MAX6958. These chips are also I2C compatible 8-bit I/O expander chips that provide additional input/output pins for microcontrollers or other devices.
  • Features

    TCA9538PWR is an 8-bit I2C and SMBus I/O expander with interrupt capabilities, 25mA output drive capability per channel, low standby current consumption, and programmable interrupt polarity. It also has open-drain active-low outputs and 5V tolerant GPIO.
  • Pinout

    The TCA9538PWR is an 8-bit I2C I/O expander with 8 pins. It features an I2C interface for communication and can operate as either an input or output port. It provides digital I/O expansion for microcontrollers without sufficient I/O ports.
  • Manufacturer

    The TCA9538PWR is manufactured by Texas Instruments (TI), a leading semiconductor company. TI specializes in designing and producing a wide range of analog and digital chips for various applications, including consumer electronics, industrial automation, automotive, and more.
  • Application Field

    The TCA9538PWR is commonly used in applications that require GPIO expansion, such as industrial control systems, home automation, and LED lighting control. It is also suitable for computer peripherals, telecommunications equipment, and test and measurement instruments where additional I/O ports are needed.
  • Package

    The TCA9538PWR chip is available in a TSSOP package type, with a 16-pin configuration. Its dimensions typically measure around 5mm x 4.4mm x 0.9mm.

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