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PCA9555RGER The Texas Instruments PCA9555RGER is a 16-bit I2C/SMBus I/O expander. It operates from 2.3V to 5.5V and supports a 400kHz fast I2C bus.
Mfr Part #:

PCA9555RGER

Available from 5 distributors
Mfr Name: Texas Instruments
Texas Instruments
The Texas Instruments PCA9555RGER is a 16-bit I2C/SMBus I/O expander. It operates from 2.3V to 5.5V and supports a 400kHz fast I2C bus.
✓ Total Stock: 45,205 pcs
$ Price Range: $0.85

PCA9555RGER Available from 5 distributors

✓ Authorised
✓ Non-Authorised
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PCA9555RGER Specifications Quick View

Most important parameters for selection – full specs in datasheet.
Category
Manufacturer Name
Clock Frequency
Current
Features
Interface
Interrupt Output
Latch-up Performance
Mounting Type
Number of I
Operating Temperature
Output Type
Supplier Device Package
Supplier Package
Voltage
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PCA9555RGER Description

Short technical summary and product information.

The Texas Instruments PCA9555RGER is a 16-bit I/O expander designed for use with I2C and SMBus interfaces. It provides 16 general-purpose I/O pins that can be configured as inputs or outputs. The device operates over a voltage range of 2.3V to 5.5V and supports a maximum clock frequency of 400kHz.

 

Key features include configuration registers, an interrupt output pin, and polarity inversion capabilities. The I/O ports are 5V tolerant, making them compatible with most microcontrollers. The PCA9555RGER is available in a 24-VQFN package, suitable for surface mounting.

 

This I/O expander is useful for applications requiring additional digital I/O pins without consuming significant microcontroller resources. Its features, such as latched outputs with high-current drive capability, allow for direct driving of LEDs. The device also boasts low standby current consumption.

PCA9555RGER Quick Information

Product Type: I/O Expander
Canonical Name: PCA9555RGER 16-bit I2C/SMBus I/O Expander with Interrupt Output
Subcategory: I2C, I3C & SPI General-Purpose I/Os (GPIOs)

PCA9555RGER Compliance

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

PCA9555RGER Estimated Pricing

Qty Low High
1+ $0.85 $0.85

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

PCA9555RGER Features

  • 16-bit I2C/SMBus I/O expander.
  • Operates from 2.3V to 5.5V.
  • Supports 400kHz fast I2C bus.
  • Features interrupt output and POR.
  • Available in 24-VQFN surface mount package.

PCA9555RGER Applications

  • Extends microcontroller I/O capabilities.
  • Suitable for LED driving applications.
  • Used in systems with I2C/SMBus interfaces.
  • Provides flexible digital input/output control.

PCA9555RGER FAQs

7 frequently asked questions generated from this part’s specifications.
What is the operating voltage range for the PCA9555RGER?

The PCA9555RGER operates from 2.3V to 5.5V.

What is the maximum clock frequency supported by the PCA9555RGER?

The PCA9555RGER supports a maximum clock frequency of 400 kHz.

How many I/O pins does the PCA9555RGER have?

The PCA9555RGER has 16 I/O pins.

What type of interface does the PCA9555RGER use?

The PCA9555RGER uses an I2C and SMBus interface.

What is the operating temperature range for the PCA9555RGER?

The PCA9555RGER operates in a temperature range of -40°C to 85°C.

Does the PCA9555RGER have an interrupt output?

Yes, the PCA9555RGER features an interrupt output.

What package is the PCA9555RGER supplied in?

The PCA9555RGER is supplied in a 24-VQFN (4x4) package.

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