PCA9555DBR The Texas Instruments PCA9555DBR is a 16-bit I2C/SMBus I/O expander. It operates at a clock frequency of 400 kHz and supports a voltage range of 2.3V to 5.5V.
Mfr Part #:

PCA9555DBR

Available from 2 distributors
Mfr Name: Texas Instruments
Texas Instruments
The Texas Instruments PCA9555DBR is a 16-bit I2C/SMBus I/O expander. It operates at a clock frequency of 400 kHz and supports a voltage range of 2.3V to 5.5V.
Total Stock: 36,057 pcs
$ Price Range: $0.75

PCA9555DBR Available from 2 distributors

Authorised
Non-Authorised
Distributor Stock Pricing MOQ PKG Lead Time Date Code On Order Quantity On Order Delivery
Non-Authorised Inventory information
32,057 pcs
32057 pcs On Request 1 On Request On Request On Request On Request On Request
Non-Authorised Inventory information
4,000 pcs
4000 pcs On Request 1 On Request On Request 21+ On Request On Request

PCA9555DBR Specifications Quick View

Most important parameters for selection – full specs in datasheet.
Category
Manufacturer Name
AEC Qualified
Automotive Grade
Clock Frequency
Current
Features
Industrial Grade
Interface
Interrupt Output
Lead Spacing
Medical Grade
Military Grade
Mounting Type
Number of I
Operating Temperature
Output Type
Supplier Device Package
Voltage

PCA9555DBR Description

Short technical summary and product information.

The Texas Instruments PCA9555DBR is a 16-bit I/O expander designed for I2C and SMBus interfaces. It operates within a voltage range of 2.3V to 5.5V and supports a maximum clock frequency of 400 kHz. This device features an interrupt output and is available in a 24-SSOP package, suitable for surface mounting.

 

With 16 I/O pins, the PCA9555DBR offers flexibility for expanding digital input/output capabilities in embedded systems. The expander supports push-pull output types and operates across a temperature range of -40°C to 85°C. It is designed for applications requiring additional GPIOs where microcontroller pins are limited.

 

The PCA9555DBR is specified with current capabilities of 10mA and 25mA. It includes features like Power-On Reset (POR). The component is packaged in a 24-SSOP (0.209", 5.30mm Width) for surface mount applications.

PCA9555DBR Quick Information

Product Type: IO Expander
Canonical Name: PCA9555 I2C/SMBus I/O Expander
Subcategory: IO Expanders

PCA9555DBR Compliance

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

PCA9555DBR Estimated Pricing

Qty Low High
1+ $0.75 $0.75

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

PCA9555DBR Features

  • 16-bit I2C/SMBus I/O expander.
  • Operates from 2.3V to 5.5V supply.
  • Supports 400 kHz fast I2C bus.
  • Features interrupt output capability.
  • Packaged in 24-SSOP for surface mounting.

PCA9555DBR Applications

  • Expands microcontroller GPIO capabilities.
  • Suitable for embedded system designs.
  • Interface expansion for I2C/SMBus systems.
  • Control of external devices via digital I/O.

PCA9555DBR FAQs

4 frequently asked questions generated from this part’s specifications.
What is the operating voltage range for the PCA9555DBR?

The PCA9555DBR operates from 2.3V to 5.5V.

What package type is the PCA9555DBR available in?

The PCA9555DBR is available in a 24-SSOP package.

What is the operating temperature range for the PCA9555DBR?

The PCA9555DBR operates from -40°C to 85°C.

Is the PCA9555DBR RoHS compliant?

The PCA9555DBR is RoHS3 Compliant.

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