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PCF8574ADW The Texas Instruments PCF8574ADW is an 8-bit I2C/SMBus IO expander designed for remote I/O expansion. It operates from 2.5V to 6V and features an interrupt pin.
Mfr Part #:

PCF8574ADW

Available from 4 distributors
Mfr Name: Texas Instruments
Texas Instruments
The Texas Instruments PCF8574ADW is an 8-bit I2C/SMBus IO expander designed for remote I/O expansion. It operates from 2.5V to 6V and features an interrupt pin.
✓ Total Stock: 71,199 pcs
$ Price Range: $1.15

PCF8574ADW Available from 4 distributors

✓ Authorised
✓ Non-Authorised
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.

PCF8574ADW 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
Supplier Package
Voltage
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PCF8574ADW Description

Short technical summary and product information.

The PCF8574ADW from Texas Instruments is an 8-bit general-purpose remote I/O expander that communicates via the I2C interface. This device is suitable for a wide range of microcontroller families and operates with a supply voltage between 2.5V and 6V.

 

Key electrical characteristics include an 8-bit quasi-bidirectional I/O port, a maximum clock frequency of 100 kHz, and an interrupt output feature. The outputs are latched and provide high-current drive capability, making them suitable for directly driving LEDs. The operating temperature range is from -40°C to 85°C.

 

This I/O expander is available in a 16-SOIC package and is designed for surface mount applications. Its design allows each quasi-bidirectional I/O to function as either an input or an output without requiring a separate data-direction control signal. At power-on, the I/Os are set to a high state.

 

The PCF8574ADW offers low standby-current consumption, making it an efficient choice for power-sensitive applications. Its compatibility with most microcontrollers and its robust latch-up performance exceeding 100 mA per JESD 78, Class II, further enhance its utility in various electronic designs.

PCF8574ADW Quick Information

Product Type: IO Expander
Canonical Name: PCF8574ADW 8-Bit I2C/SMBus I/O Expander
Subcategory: General Purpose I/O

PCF8574ADW Compliance

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

PCF8574ADW Estimated Pricing

Qty Low High
1+ $1.15 $1.15

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

PCF8574ADW Features

  • 8-bit quasi-bidirectional I/O port.
  • Operates from 2.5V to 6V supply.
  • 100 kHz maximum clock frequency.
  • Interrupt output pin included.
  • Latched outputs with high-current drive.

PCF8574ADW Applications

  • Expanding microcontroller I/O in embedded systems
  • Used in automation and control circuits
  • Sensor interfacing in industrial applications
  • Adding I/O ports to portable devices

PCF8574ADW FAQs

2 frequently asked questions generated from this part’s specifications.
What is the operating voltage range for the PCF8574ADW?

The PCF8574ADW operates from 2.5V to 6V.

What package type is the PCF8574ADW available in?

The PCF8574ADW is available in a 16-SOIC package.

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