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PCA9554ADWR The Texas Instruments PCA9554ADWR is an 8-bit I2C and SMBus I/O expander. It operates from 2.3V to 5.5V and supports a 400kHz I2C bus speed.
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PCA9554ADWR

Available from 1 distributors
Mfr Name: Texas Instruments
Texas Instruments
The Texas Instruments PCA9554ADWR is an 8-bit I2C and SMBus I/O expander. It operates from 2.3V to 5.5V and supports a 400kHz I2C bus speed.
✓ Total Stock: 12 pcs
$ Price Range: $0.58

PCA9554ADWR Available from 1 distributor

✓ Authorised
✓ Non-Authorised
Distributor Stock Pricing MOQ PKG Lead Time Date Code On Order Quantity On Order Delivery
Bristol Electronics ✓
Non-Authorised Inventory information
12 pcs
On Request
12 pcs On Request 1 On Request On Request 2026-02-25 06:16:38 On Request On Request
DistyParts aggregates offers from multiple distributors. Final prices, lead times and terms are subject to the distributors' discretion and may change without prior notice. DistyParts is not liable for any discrepancies.

PCA9554ADWR Specifications Quick View

Most important parameters for selection – full specs in datasheet.
Category
Manufacturer Name
Clock Frequency
Current
ESD Protection
Features
Interface
Interrupt Output
Latch-up Performance
Lead Spacing
Mounting Type
Number of I
Operating Temperature
Operating Voltage
Output Type
Supplier Device Package
Supplier Package
Voltage
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PCA9554ADWR Description

Short technical summary and product information.

The PCA9554ADWR from Texas Instruments is an 8-bit remote I/O expander designed for the I2C and SMBus interface. It provides general-purpose remote I/O expansion for various microcontroller families.

 

This device operates within a power-supply voltage range of 2.3V to 5.5V and features 5V tolerant I/Os. It supports a fast 400kHz I2C bus speed. The PCA9554ADWR includes an open-drain active-low interrupt output and three hardware address pins, allowing up to eight devices on the I2C/SMBus. It also features an input/output configuration register and a polarity inversion register.

 

At power-on, all I/Os are configured as inputs with a weak pullup. The system master can configure these I/Os as either inputs or outputs by writing to the I/O configuration bits. The device ensures no glitch on power up and provides latched outputs with high-current drive capability for directly driving LEDs. Latch-up performance exceeds 100 mA per JESD 78, Class II, and ESD protection exceeds JESD 22 standards.

 

The PCA9554ADWR is available in a 16-SOIC package, suitable for surface mount applications. Its operating temperature range is -40°C to 85°C.

PCA9554ADWR Quick Information

Product Type: IO Expander
Canonical Name: PCA9554A Remote 8-Bit I2C and SMBus I/O Expander With Interrupt Output and Configuration Registers
Subcategory: IO Expanders

PCA9554ADWR Compliance

RoHS Status: RoHS Compliant
Moisture Sensitivity Level (MSL): 1 Unlimited
REACH Status: REACH Unaffected

PCA9554ADWR Estimated Pricing

Qty Low High
1+ $0.58 $0.58

Estimated market price range - modelled values for guidance only, not live distributor offers.

PCA9554ADWR Features

  • 8-bit I2C and SMBus I/O expander.
  • Operates from 2.3V to 5.5V supply.
  • Supports 400kHz fast I2C bus speed.
  • Features interrupt output and address pins.
  • Available in 16-SOIC package.

PCA9554ADWR Applications

  • Expands microcontroller I/O capabilities remotely.
  • Provides interrupt-driven input/output expansion.
  • Suitable for low-voltage, high-current LED driving.
  • Ideal for industrial automation control panels.
  • Supports multiple devices on I2C bus.

PCA9554ADWR FAQs

7 frequently asked questions generated from this part’s specifications.
What is the operating voltage range for the PCA9554ADWR?

The PCA9554ADWR operates from a 2.3V to 5.5V power supply.

What is the maximum clock frequency supported by the PCA9554ADWR?

The PCA9554ADWR supports a maximum clock frequency of 400 kHz.

How many I/O pins does the PCA9554ADWR provide?

The PCA9554ADWR provides 8 I/O pins.

What type of interface does the PCA9554ADWR use?

The PCA9554ADWR uses the I²C and SMBus interface.

Does the PCA9554ADWR have an interrupt output?

Yes, the PCA9554ADWR features an interrupt output.

What is the operating temperature range for the PCA9554ADWR?

The PCA9554ADWR operates in a temperature range of -40°C to 85°C.

What package is the PCA9554ADWR available in?

The PCA9554ADWR is available in a 16-SOIC package.

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