PCF8574T-3

Name: PCF8574T-3
Brand: Philips
Rating: 4.5 (10 reviews)
Author: Lisleapex

Remote 8-bit I/O expander for I2C-bus with interrupt

6,062 Effective Inventory

PCF8574T-3

Effective Inventory6,062

Remote 8-bit I/O expander for I2C-bus with interrupt

Manufacturer Part # : PCF8574T-3
Package/Case: SOP-16
Brand: Philips

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PCF8574T-3 DataSheet

Current price plan is under preparation. Please contact our customer service team for the latest pricing information. Thank you for your understanding and support!

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PCF8574T-3 Details

The PCF8574T-3 is a monolithic integrated circuit (IC) designed and manufactured by NXP Semiconductors. It is a parallel I/O port, 8-bit, 8 I/O, CMOS, PDSO16 IC that provides bidirectional I/O expander applications and high current-drive load applications.

The PCF8574T-3 is a voltage regulator IC that is designed to control constant output voltage, monitor input/output voltages and provide protection against over-voltage, over-current, and over-temperature conditions. It is suitable for embedded systems and battery-powered applications, including DC/DC converters for automotive and industrial applications, LED lighting, and portable electronic devices.

PCF8574T-3 Key Features

The features of PCF8574T/3 include updated type numbers in pin configurations for SO16 and SSOP20
combined pin descriptions for DIP16
SO16
and SSOP20 in Table 3
reorganized functional description in Section 7
and an updated address map in Table 4 with a column for 7-bit hexadecimal address without R/W

PCF8574T-3 Product Usage

The PCF8574T-3 is an I/O expander IC produced by NXP Semiconductors. It is specifically designed to provide bidirectional I/O expansion and high current-drive load applications. Some typical applications and circuits that use the PCF8574T-3 include:

Bidirectional I/O Expander Applications:

I/O expansion for embedded systems and battery-powered devices
DC/DC converters for automotive and industrial applications
LED lighting and portable electronic devices

PCF8574T-3 Circuit Diagram

A sample circuit diagram using the PCF8574T-3 might involve:

Power Supply: Connect a suitable voltage supply to the Vcc pin.
I/O Connections: Connect the I/O pins between the IC and the external devices.
Protection Components: Include diodes, capacitors, and resistors as recommended in the datasheet for decoupling and protective purposes.

Before designing a specific circuit, it is essential to refer to the manufacturer's datasheet and application notes to ensure correct implementation and to understand all the specifications, electrical characteristics, and protective features of the PCF8574T-3.

PCF8574T-3 Quality and Reliability

NXP Semiconductors' commitment to quality ensures that the PCF8574T-3 IC is reliable and performs consistently. It is designed to meet the stringent requirements of industrial and commercial applications, where consistent operation and long service life are critical.

PCF8574T-3 Ordering Information

The PCF8574T-3 is available in tape and reel packaging, facilitating efficient assembly for high-volume production. Its product identification, including the temperature range and package type, is clearly specified for ease of ordering.

PCF8574T-3 Package and Quality

The PCF8574T-3 is housed in a compact, thermally efficient PDSO16 package, making it suitable for space-constrained designs without compromising on thermal management or performance. NXP Semiconductors ensures that each unit undergoes rigorous testing to meet stringent automotive and industrial standards. This emphasis on quality guarantees that the PCF8574T-3 delivers dependable, long-term performance across a wide range of operational environments.

Conclusion

The PCF8574T-3 from NXP Semiconductors is an ideal choice for engineers seeking a reliable I/O expander IC for bidirectional I/O expansion and high current-drive load applications. With its versatile functionality, integrated protection features, and compact package, it is well-suited for applications across industrial and commercial sectors. Whether used in embedded systems, battery-powered devices, or general I/O expansion, the PCF8574T-3 provides robust performance and flexibility, making it a valuable component for demanding I/O applications.

Specifications

The followings are basic parameters of the part selected concerning the characteristics of the part and categories it belongs to.

Manufacturer

PHILIPS

Product Category !

I/O Expanders

Datasheet PDF

Datasheets record the features, absolute maximum ratings, applications and more of the device, which benefit a lot as an overall guide to the specific application of the part.

Preliminary Specification PCF8574T-3 PDF Download

FAQs

What is PCF8574T-3?

The PCF8574T-3 is an 8-bit remote I/O expander for I2C-bus with an open-drain output designed by NXP Semiconductors. This device allows remote I/O expansion, and it provides general-purpose remote I/O expansion for most microcontroller families via the I2C interface.

How Does PCF8574T-3 Work?

The PCF8574T-3 works by providing 8 bits of general-purpose remote I/O expansion through the I2C-bus serial interface. It allows the microcontroller to output to the device (write mode) or read from the device (read mode) through the I2C interface, expanding the number of I/Os available for the microcontroller.

How Many Pins does PCF8574T-3 have and What are the Functions of the Pinout Configuration?

The PCF8574T-3 is housed in a 16-pin SOIC (Small Outline Integrated Circuit) package. The pinout configuration includes:

P0-P7: I/O port pins.
A0-A2: Address select pins for device addressing.
SCL, SDA: I2C-bus serial interface.
GND: Ground pin.
VCC: Power supply pin.

What are the Pros and Cons of PCF8574T-3?

Pros:

Remote I/O Expansion: Allows expansion of I/Os for microcontroller applications.
I2C Interface: Provides a simple and easy-to-implement serial interface for communication.
Open-Drain Outputs: Offers flexibility in interfacing with various microcontrollers and devices.
Address Select Pins: Enables multiple devices to be connected to the same I2C bus with individual addresses.
Wide Operating Voltage Range: Supports a wide voltage range for diverse system compatibility.

Cons:

Speed Limitation: May have limitations in speed and data throughput compared to parallel interface alternatives.
Complexity: Requires understanding of I2C-bus protocol for proper integration and operation.
External Pull-Up Resistors: May require external pull-up resistors for the I2C-bus interface.

Are There Any Equivalents/Alternatives to PCF8574T-3 for Recommendation?

The MCP23008 from Microchip Technology is a similar 8-bit I/O expander with I2C interface.
Alternatives to the PCF8574T-3 include the MAX7311 from Maxim Integrated and the SX1509 from Semtech.