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HomeProductsIntegrated Circuits (ICs)Interface - I/O ExpandersPCF8574PWG4
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PCF8574PWG4 - Texas Instruments

Manufacturer Part Number
PCF8574PWG4
Manufacturer
Texas Instruments
Allelco Part Number
32D-PCF8574PWG4
Warranty
1 Year Allelco Warranty - Find out more
Parts Description
IC XPNDR 100KHZ I2C 20TSSOP
Package
20-TSSOP
Data sheet
-
RoHs Status
ROHS3 Compliant
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In stock: 8060

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Specifications

PCF8574PWG4 Tech Specifications
Texas Instruments - PCF8574PWG4 technical specifications, attributes, parameters and parts with similar specifications to Texas Instruments - PCF8574PWG4

Product Attribute Attribute Value  
Manufacturer Texas Instruments  
Voltage - Supply 2.5V ~ 6V  
Supplier Device Package 20-TSSOP  
Series -  
Package / Case 20-TSSOP (0.173", 4.40mm Width)  
Package Tube  
Output Type Push-Pull  
Operating Temperature -40°C ~ 85°C  
Product Attribute Attribute Value  
Number of I/O 8  
Mounting Type Surface Mount  
Interrupt Output Yes  
Interface I²C  
Features POR  
Current - Output Source/Sink 1mA, 25mA  
Clock Frequency 100 kHz  
Base Product Number PCF8574  

Environmental & Export Classifications

ATTRIBUTE DESCRIPTION
RoHs Status ROHS3 Compliant
Moisture Sensitivity Level (MSL) 1 (Unlimited)
REACH Status REACH Unaffected
ECCN EAR99
HTSUS 8542.39.0001

Parts Introduction

Manufacturer Part Number

PCF8574PWG4

Manufacturer

Texas Instruments

Introduction

The PCF8574PWG4 is an 8-bit remote I/O expander for I2C-bus applications. It provides general-purpose remote I/O expansion for most microcontroller families, with a wide range of additional features to simplify remote I/O interfacing.

Product Features and Performance

8-bit remote I/O expander for I2C-bus applications

Provides general-purpose remote I/O expansion

Supports a wide range of additional features to simplify remote I/O interfacing

Operates with a supply voltage of 2.5V to 6V

Supports clock frequencies up to 100 kHz

Offers push-pull output type

Provides source/sink current of 1mA and 25mA

Operates across a temperature range of -40°C to 85°C

Available in a 20-TSSOP package

Product Advantages

Simplifies remote I/O interfacing for various microcontroller families

Offers a wide range of additional features to enhance remote I/O capabilities

Supports a wide supply voltage range and high clock frequencies

Provides push-pull output with sufficient source/sink current

Operates across a wide temperature range, ensuring reliability

Key Reasons to Choose This Product

Versatile remote I/O expansion solution for a variety of applications

Robust performance with support for high clock frequencies and wide voltage range

Simplified remote I/O interfacing with the help of additional features

Reliable operation across a wide temperature range

Quality and Safety Features

Manufactured by the industry-leading Texas Instruments

Designed and tested to meet rigorous quality and safety standards

Compatibility

Compatible with a wide range of microcontroller families through the I2C-bus interface

Application Areas

Suitable for various applications requiring remote I/O expansion, such as industrial automation, home appliances, and consumer electronics

Product Lifecycle

The PCF8574PWG4 is an obsolete product. Customers should contact our website's sales team for information on equivalent or alternative models that may be available.

Parts with Similar Specifications

The three parts on the right have similar specifications to Texas Instruments PCF8574PWG4

Product Attribute PCF8574PWRG4 PCF8574PWR PCF8574NG4 PCF8574RGYRG4
Part Number PCF8574PWRG4 PCF8574PWR PCF8574NG4 PCF8574RGYRG4
Manufacturer Luminary Micro / Texas Instruments Texas Instruments Texas Instruments Luminary Micro / Texas Instruments
Supplier Device Package - 196-NFBGA (12x12) 16-PDIP 64-VQFN (9x9)
Mounting Type - Surface Mount Through Hole Surface Mount
Package - Tape & Reel (TR) Tube Tape & Reel (TR)
Voltage - Supply - - - -
Clock Frequency - - - -
Series - - - -
Output Type - Current - Unbuffered Voltage - Buffered -
Base Product Number - DAC34H84 MAX500 ADS62P42
Package / Case - 196-LFBGA 16-DIP (0.300', 7.62mm) 64-VFQFN Exposed Pad
Operating Temperature - -40°C ~ 85°C 0°C ~ 70°C -40°C ~ 85°C
Interrupt Output - - - -
Interface - - - -
Number of I/O - - - -
Current - Output Source/Sink - - - -
Features - - - Simultaneous Sampling

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Customer Reviews

Evaluation: 10 Articles

  • Jess***Jones
    Apr 17, 2026

    It offers good value for the price, and the specifications match the description. I’ve been using it for two days with no issues, and I’ll definitely buy it again if I need it in the future.

  • Mich***Smith
    Apr 17, 2026

    Shipping was on time, the component pins are neatly aligned, and I tested 10 of them with a multimeter—all readings were within the specified range. Highly recommended.

  • Aman***arris
    Apr 3, 2026

    It was great—the entire process, from placing the order to receiving the package, went very smoothly. The components were consistent, the price was fair, and I had a very pleasant shopping experience.

  • Mike***nch
    Apr 3, 2026

    Better than expected! The resistance and capacitance readings were spot-on, and it passed the test on the first try. The service was reliable, and the packaging was thoughtful—I highly recommend it.

  • Daic***K.
    Mar 23, 2026

    Very good. No issue after long time testing.

  • Kevi***.
    Mar 17, 2026

    Fast switching and stable output. Very satisfied with this IC

  • Daou***hekebkeb
    Jun 16, 2024

    I had a great experience purchasing items from Allelcoelec, I recommend

  • Uri ***al
    Jun 19, 2024

    Good comunication,
    Transpnt regarding the process and price.

  • Yaqu***l Ali
    Jun 19, 2024

    Providing reasonable prices, regular follow-up of orders, providing accurate and regular invoices, timely delivery of goods, excellent customer service and providing original goods and best quality materials.

  • Lea ***
    Jun 19, 2024

    Morrey was very helpful and right on top of things!
    He replied quickly to my RFQ. He was very courteous and professional.

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Shipment

Delivery Time

In-stock items can be shipped within 24 hours. Some parts will be arranged for delivery within 1-2 days from the date all items arrive at our warehouse. And Allelco ships order once a day at about 17:00, except Sunday. Once the goods are shipped, the estimated delivery time depends on the shipping methods and Delivery destination. The table below shows are the logistic time for some common countries.

Delivery Cost

  1. Use your express account for shipment if you have one.
  2. Use our account for the shipment. Refer to the table below for the approximate charges.
(Different time frame / countries / package size has different price.)

Delivery Method

  1. Global Common Shipment by DHL / UPS / FedEx / TNT / EMS / SF we support.
  2. Others more shipping ways, please get in touch with your customer manager.

Common Countries Logistic Time Reference
Region Country Logistic Time(Day)
America United States 5
Brazil 7
Europe Germany 5
United Kingdom 4
Italy 5
Oceania Australia 6
New Zealand 5
Asia India 4
Japan 4
Middle East Israel 6
DHL & FedEx Shipment Charges Reference
Shipment charges(KG) Reference DHL(USD$)
0.00kg-1.00kg USD$30.00 - USD$60.00
1.00kg-2.00kg USD$40.00 - USD$80.00
2.00kg-3.00kg USD$50.00 - USD$100.00
Note:
The above table is for reference only. There may have some data bias for the uncontrollable factors.
Contact us if you have any questions.

Payment Support

The payment method can be chosen from the methods shown below: Wire Transfer (T/T, Bank Transfer), Western Union, Credit card, PayPal.

Your Faithful Supply Chain Partner -

Contact us if you have any questions.

  1. Phone
    +00852 9146 4856

Certifications & Memberships

View More
Texas Instruments

PCF8574PWG4

Texas Instruments
32D-PCF8574PWG4

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