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TCA9555RTWR The Texas Instruments TCA9555RTWR is a 16-bit I2C/SMBus IO expander. It operates from 1.65V to 5.5V and features a 400kHz clock frequency.
Mfr Part #:

TCA9555RTWR

Available from 3 distributors
Mfr Name: Texas Instruments
Texas Instruments
The Texas Instruments TCA9555RTWR is a 16-bit I2C/SMBus IO expander. It operates from 1.65V to 5.5V and features a 400kHz clock frequency.
✓ Total Stock: 7,130 pcs
$ Price Range: $0.61

TCA9555RTWR Available from 3 distributors

✓ Authorised
✓ Non-Authorised
Distributor Stock Pricing MOQ PKG Lead Time Date Code On Order Quantity On Order Delivery
Xingangxin ✓
Non-Authorised Inventory information
6,216 pcs
On Request
6216 pcs On Request 1 On Request On Request On Request On Request On Request
Bristol Electronics ✓
Non-Authorised Inventory information
694 pcs
On Request
694 pcs On Request 1 On Request On Request On Request On Request On Request
MW.FEP S.p.A. ✓
Non-Authorised Inventory information
220 pcs
On Request
220 pcs On Request 1 On Request On Request On Request 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.

TCA9555RTWR 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
Medical Grade
Military Grade
Mounting Type
Number of I
Operating Temperature
Output Type
Supplier Device Package
Voltage
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TCA9555RTWR Description

Short technical summary and product information.

The TCA9555RTWR from Texas Instruments is a 16-bit I/O expander designed for the I2C and SMBus interfaces. It supports a wide operating voltage range from 1.65V to 5.5V, making it compatible with various microcontroller families.

 

This device offers 16 general-purpose I/O pins that can be configured as inputs or outputs. Key features include a maximum clock frequency of 400 kHz, an active-low interrupt output, and 5V tolerant I/O ports. The TCA9555RTWR is available in a 24-WQFN (4x4) package, suitable for surface mount applications.

 

It provides remote I/O expansion capabilities, allowing designers to add more I/O ports to their systems without consuming additional microcontroller pins. The expander includes configuration registers for setting pin direction and polarity, as well as latched outputs with high-current drive capability for directly driving LEDs.

TCA9555RTWR Quick Information

Product Type: IO Expander
Canonical Name: TCA9555 16-Bit I2C/SMBus I/O Expander
Subcategory: I2C, I3C & SPI ICs

TCA9555RTWR Compliance

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

TCA9555RTWR Estimated Pricing

Qty Low High
1+ $0.61 $0.61

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

TCA9555RTWR Features

  • 16-bit I2C/SMBus IO expander.
  • Wide 1.65V to 5.5V operating voltage.
  • 400kHz fast I2C bus support.
  • Active-low interrupt output included.
  • Surface mount 24-WQFN package.

TCA9555RTWR Applications

  • Extends microcontroller I/O capabilities.
  • Suitable for embedded systems.
  • Ideal for I2C interface designs.
  • Drives LEDs directly.

TCA9555RTWR FAQs

5 frequently asked questions generated from this part’s specifications.
What is the operating voltage range for the TCA9555RTWR?

The TCA9555RTWR operates from 1.65V to 5.5V.

What package type is the TCA9555RTWR available in?

The TCA9555RTWR is available in a 24-WQFN (4x4) package.

What is the operating temperature range for this IO expander?

The operating temperature range is -40°C to 85°C.

Does the TCA9555RTWR have an interrupt output?

Yes, the TCA9555RTWR features an active-low interrupt output.

What is the maximum clock frequency supported by the TCA9555RTWR?

The TCA9555RTWR supports a maximum clock frequency of 400 kHz.

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