PCA9555PWR Semiconductors - ICs by Texas Instruments

I/O EXPANDER 16 BIT 400KHZ TSSOP-24

Electronic & Electrical Components>Semiconductors - ICs>Driver & Interface ICs
Status: Unknown
Series: -
RoHS: Unknown
Download Datasheet Visit Manufacturer Site View Pricing & Stock
This 16-bit I/O expander for the two-line bidirectional bus (I2C) is designed for 2.3-V to 5.5-V VCC operation. It provides general-purpose remote I/O expansion for most microcontroller families via the I2C interface [serial clock (SCL), serial data (SDA)]. The PCA9555 consists of two 8-bit Configuration (input or output selection), Input Port, Output Port, and Polarity Inversion (active high or active low operation) registers. At power on, the I/Os are configured as inputs. The system master can enable the I/Os as either inputs or outputs by writing to the I/O configuration bits. The data for each input or output is kept in the corresponding Input or Output register. The polarity of the Input Port register can be inverted with the Polarity Inversion register. All registers can be read by the system master.

Where to Buy

Prices starting from US$0.60

Distributor Stock
Logo for Texas Instruments
Texas Instruments
from US$0.60
5,056
in stock
 Buy Now

Specifications

Chip Configuration 16bit
Bus Frequency 400kHz
IC Interface Type I2C SMBus
Supply Voltage Min 2.3V
Supply Voltage Max 5.5V
Interface Case Style TSSOP
No. of Pins 24Pins
Product Range -

Alternative Descriptions

16-bit 2.3- to 5.5-V I2C/SMBus I/O expander with interrupt, weak pull-up & config registers | Texas Instruments

Frequently Asked Questions

Where can I find additional details, specifications and documents for a PCA9555PWR?

Additional datasheets, footprints and schematics for PCA9555PWR are listed on our Part Details page. You can also find images and similar parts to PCA9555PWR on this page.

What pricing and inventory information can I view?

Distributor pricing and stock information is available for PCA9555PWR on our Product Comparison page. Access via the 'View Pricing & Stock' button to view PCA9555PWR price breaks, MOQs, lead times, inventory and SKUs from distributors.

What category does PCA9555PWR fall under?

The PCA9555PWR is listed under Electronic & Electrical Components > Semiconductors - ICs > Driver & Interface ICs.

Can I view similar or alternative parts?

You can view similar parts to PCA9555PWR when available in the Driver & Interface ICs range under the specifications section at the bottom of the details page.

Who can I contact for technical support of the product?

Submit any questions directly to the customer support team of the distributor listing the product. For the PCA9555PWR you can contact the distributor directly for product support, shipping queries etc.

Is the PCA9555PWR RoHS compliant?

This part has not been flagged as RoHS Compliant.

Which authorised distributors for PCA9555PWR have stock available?

Authorised distributors including Texas Instruments have stock available or on a lead time for PCA9555PWR.

How do I check stock and lead times for all distributors?

Stock availability and lead times will be displayed for PCA9555PWR often in real-time on the comparison pages.

What if I can't find stock of PCA9555PWR?

You can fill out our help required form which you can use to request a quote for PCA9555PWR from some of our verified obsolescence suppliers. Alternatively, contact us via our web chat in the bottom left of your screen and one of our team will try to help.

We use cookies to improve your experience. See our privacy policy.
Okay