PCF8575DW
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Texas Instruments PCF8575DW

Manufacturer No:
PCF8575DW
Manufacturer:
Texas Instruments
Package:
Tube
Description:
IC I/O EXPANDER I2C 16B 24SOIC
Delivery:
Payment:
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Product Introduction

Overview

The PCF8575DW, produced by Texas Instruments, is a remote 16-bit I2C and SMBus I/O expander with an interrupt output. This device is designed to provide general-purpose remote I/O expansion for most microcontroller families via the two-line bidirectional I2C bus. It operates within a voltage range of 2.5V to 5.5V, making it versatile for various applications. The PCF8575DW features a 16-bit quasi-bidirectional input/output port, allowing for flexible configuration as either inputs or outputs without the need for a data-direction control signal.

Key Specifications

Parameter Description
Package Type SOIC-24, SSOP-24, TSSOP-24, VQFN-24
Supply Voltage (VCC) 2.5V to 5.5V
Bus Frequency Up to 400 kHz
Number of I/O Ports 16-bit (P07-P00, P17-P10)
I/O Port Type Quasi-bidirectional
Interrupt Output Open-drain interrupt output
Standby Current Consumption Maximum 10 μA
Address Inputs A0, A1, A2 (for addressing multiple devices)
RoHS Compliance Yes

Key Features

  • I2C to parallel-port expander with a 16-bit quasi-bidirectional I/O port.
  • Open-drain interrupt output for notifying the microcontroller of changes in the I/O ports.
  • Low standby-current consumption of maximum 10 μA.
  • Latched outputs with high-current drive capability for directly driving LEDs.
  • Flexible configuration of I/O ports as either inputs or outputs without a data-direction control signal.
  • Support for I2C and SMBus protocols.

Applications

  • Telecom shelters and filter units
  • Servers and routers (telecom switching equipment)
  • Personal computers and personal electronics
  • Industrial automation
  • Products with GPIO-limited processors.

Q & A

  1. What is the PCF8575DW used for?

    The PCF8575DW is used as a remote 16-bit I2C and SMBus I/O expander to provide additional I/O ports for microcontrollers.

  2. What is the voltage range of the PCF8575DW?

    The PCF8575DW operates within a voltage range of 2.5V to 5.5V.

  3. How many I/O ports does the PCF8575DW have?

    The PCF8575DW has a 16-bit quasi-bidirectional I/O port, divided into two 8-bit ports (P07-P00 and P17-P10).

  4. What type of interrupt output does the PCF8575DW have?

    The PCF8575DW features an open-drain interrupt output.

  5. What is the maximum standby current consumption of the PCF8575DW?

    The maximum standby current consumption is 10 μA.

  6. Can the PCF8575DW drive LEDs directly?
  7. What protocols does the PCF8575DW support?

    The PCF8575DW supports both I2C and SMBus protocols.

  8. How are the I/O ports configured on the PCF8575DW?

    The I/O ports can be configured as either inputs or outputs without the need for a data-direction control signal.

  9. What are some common applications of the PCF8575DW?

    Common applications include telecom shelters, servers, routers, personal computers, personal electronics, and industrial automation.

  10. Is the PCF8575DW RoHS compliant?

Product Attributes

Number of I/O:16
Interface:I²C, SMBus
Interrupt Output:Yes
Features:POR
Output Type:Push-Pull
Current - Output Source/Sink:10mA, 25mA
Clock Frequency:400 kHz
Voltage - Supply:4.5V ~ 5.5V
Operating Temperature:-40°C ~ 85°C
Mounting Type:Surface Mount
Package / Case:24-SOIC (0.295", 7.50mm Width)
Supplier Device Package:24-SOIC
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Similar Products

Part Number PCF8575DW PCF8575DWR PCF8575PW PCF8574DW PCF8575CDW PCF8575DB
Manufacturer Texas Instruments Texas Instruments Texas Instruments Texas Instruments Texas Instruments Texas Instruments
Product Status Active Active Active Active Active Active
Number of I/O 16 16 16 8 16 16
Interface I²C, SMBus I²C, SMBus I²C, SMBus I²C I²C, SMBus I²C, SMBus
Interrupt Output Yes Yes Yes Yes Yes Yes
Features POR POR POR POR POR POR
Output Type Push-Pull Push-Pull Push-Pull Push-Pull Open Drain Push-Pull
Current - Output Source/Sink 10mA, 25mA 1mA, 25mA 10mA, 25mA 1mA, 25mA 10mA, 25mA 10mA, 25mA
Clock Frequency 400 kHz 400 kHz 400 kHz 100 kHz 400 kHz 400 kHz
Voltage - Supply 4.5V ~ 5.5V 2.5V ~ 5.5V 4.5V ~ 5.5V 2.5V ~ 6V 4.5V ~ 5.5V 2.5V ~ 5.5V
Operating Temperature -40°C ~ 85°C -40°C ~ 85°C -40°C ~ 85°C -40°C ~ 85°C -40°C ~ 85°C -40°C ~ 85°C
Mounting Type Surface Mount Surface Mount Surface Mount Surface Mount Surface Mount Surface Mount
Package / Case 24-SOIC (0.295", 7.50mm Width) 24-SOIC (0.295", 7.50mm Width) 24-TSSOP (0.173", 4.40mm Width) 16-SOIC (0.295", 7.50mm Width) 24-SOIC (0.295", 7.50mm Width) 24-SSOP (0.209", 5.30mm Width)
Supplier Device Package 24-SOIC 24-SOIC 24-TSSOP 16-SOIC 24-SOIC 24-SSOP

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