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PCA9557PWR The Texas Instruments PCA9557PWR is an 8-bit I2C/SMBus IO expander. It operates from 2.3V to 5.5V and features a 400kHz clock frequency.
Mfr Part #:

PCA9557PWR

Available from 4 distributors
Mfr Name: Texas Instruments
Texas Instruments
The Texas Instruments PCA9557PWR is an 8-bit I2C/SMBus IO expander. It operates from 2.3V to 5.5V and features a 400kHz clock frequency.
✓ Total Stock: 129,966 pcs
$ Price Range: $0.73

PCA9557PWR Available from 4 distributors

✓ Authorised
✓ Non-Authorised
Distributor Stock Pricing MOQ PKG Lead Time Date Code On Order Quantity On Order Delivery
Romaks Technologies ✓
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120,533 pcs
On Request
120533 pcs On Request 1 On Request On Request On Request On Request On Request
Xingangxin ✓
Non-Authorised Inventory information
6,987 pcs
On Request
6987 pcs On Request 1 On Request On Request On Request On Request On Request
PROSOFT ELECTRONICS ✓
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1,884 pcs
On Request
1884 pcs On Request 1 On Request On Request On Request On Request On Request
Smaxon Electronics ✓
Non-Authorised Inventory information
562 pcs
On Request
562 pcs On Request 1 On Request On Request 18+ 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.

PCA9557PWR Specifications Quick View

Most important parameters for selection – full specs in datasheet.
Category
Manufacturer Name
Clock Frequency
Current
Features
Interface
Interrupt Output
Lead Spacing
Mounting Type
Number of I
Operating Temperature
Output Type
Supplier Device Package
Voltage
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PCA9557PWR Description

Short technical summary and product information.

The PCA9557PWR from Texas Instruments is an 8-bit I/O expander designed for I2C and SMBus interfaces. This device operates within a voltage range of 2.3V to 5.5V, making it suitable for a variety of applications. It supports a fast I2C bus frequency of up to 400kHz.

 

The PCA9557PWR features 8 I/O pins that can be configured as inputs or outputs. The device includes configuration registers, a power-on reset (POR) feature, and supports open-drain and push-pull output types. It is specified for an operating temperature range of -40°C to 85°C.

 

This I/O expander is available in a 16-TSSOP surface mount package. The 16-TSSOP package has a width of 4.40mm. Its current capabilities are rated at 10mA and 25mA.

 

Key features include its 8 I/O channels, I2C/SMBus interface, and a wide operating voltage range. The device is designed for applications requiring additional digital I/O pins controlled via a serial bus.

PCA9557PWR Quick Information

Product Type: IO Expander
Canonical Name: PCA9557PWR 8-bit I2C/SMBus I/O Expander
Subcategory: IO Expanders

PCA9557PWR Compliance

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

PCA9557PWR Estimated Pricing

Qty Low High
1+ $0.73 $0.73

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

PCA9557PWR Features

  • 8-bit I2C/SMBus IO expander.
  • Operates from 2.3V to 5.5V supply.
  • Supports 400kHz Fast I2C bus.
  • Configurable I/O ports.
  • Available in 16-TSSOP package.

PCA9557PWR Applications

  • Extends digital I/O capabilities.
  • Ideal for I2C bus systems.
  • Suitable for SMBus applications.
  • Used in embedded systems.
  • Provides flexible port configuration.

PCA9557PWR FAQs

7 frequently asked questions generated from this part’s specifications.
What is the operating voltage range for the PCA9557PWR?

The PCA9557PWR operates from 2.3V to 5.5V.

What package type is the PCA9557PWR available in?

The PCA9557PWR is available in a 16-TSSOP package.

What is the operating temperature range for the PCA9557PWR?

The PCA9557PWR has an operating temperature range of -40°C to 85°C.

What is the RoHS status of the PCA9557PWR?

The PCA9557PWR is RoHS3 Compliant.

How many I/O pins does the PCA9557PWR have?

The PCA9557PWR has 8 I/O pins.

What is the maximum clock frequency supported by the PCA9557PWR?

The PCA9557PWR supports a maximum clock frequency of 400 kHz.

What interface does the PCA9557PWR use?

The PCA9557PWR uses the I2C and SMBus interface.

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