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PCF8574AT-3 The PCF8574AT-3 from NXP Semiconductors is an 8-bit I2C-bus to parallel port expander. It operates over a 2.5V to 6V supply range and features an active low interrupt output.
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PCF8574AT-3

Available from 1 distributors
Mfr Name: Phihong USA
Phihong USA
The PCF8574AT-3 from NXP Semiconductors is an 8-bit I2C-bus to parallel port expander. It operates over a 2.5V to 6V supply range and features an active low interrupt output.
✓ Total Stock: 1,859 pcs

PCF8574AT-3 Available from 1 distributor

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1,859 pcs
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1859 pcs On Request 1 On Request On Request 0101/0126G/ On Request On Request
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PCF8574AT-3 Specifications Quick View

Most important parameters for selection – full specs in datasheet.
Category
Manufacturer Name
ESD Protection
Industrial Grade
Interrupt Output
Lead Spacing
Lead Style
Operating Temperature
Package / Case
SVHC Present
Storage Temperature
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PCF8574AT-3 Description

Short technical summary and product information.

The PCF8574AT-3 is an 8-bit remote I/O expander from NXP Semiconductors that communicates via the two-wire I2C-bus. It provides eight quasi-bidirectional ports that can be independently configured as inputs or outputs, making it suitable for expanding microcontroller I/O capabilities.

 

This device features a 100 kHz I2C-bus interface and operates within a supply voltage range of 2.5 V to 6 V. The latched output ports can directly drive LEDs, and the total package sink capability is 80 mA. An active low open-drain interrupt output is included to signal changes in input states, reducing the need for constant polling.

 

The PCF8574AT-3 is available in DIP16, SO16, and SSOP20 packages. It operates across a temperature range of -40 °C to +85 °C. Its low standby current of 2.5 µA (typical) makes it suitable for mobile applications. ESD protection exceeds 2000 V HBM and 1000 V CDM.

PCF8574AT-3 Quick Information

Product Type: I/O Expander
Canonical Name: PCF8574AT-3 8-bit I2C-bus to Parallel Port Expander
Subcategory: I2C-bus to Parallel Port Expander

PCF8574AT-3 Compliance

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

PCF8574AT-3 Features

  • 8-bit I2C-bus to parallel port expander.
  • Operates from 2.5 V to 6 V supply.
  • 100 kHz I2C-bus interface speed.
  • Active LOW open-drain interrupt output.
  • Available in DIP, SO, and SSOP packages.

PCF8574AT-3 Applications

  • Expand microcontroller I/O capabilities.
  • Drive indicator devices like LEDs.
  • Monitor interrupt status or keypads.
  • Suitable for mobile applications.
  • Used in industrial control systems.

PCF8574AT-3 FAQs

7 frequently asked questions generated from this part’s specifications.
What is the operating supply voltage for the PCF8574AT-3?

The PCF8574AT-3 operates from 2.5 V to 6 V.

What is the I2C-bus interface speed of the PCF8574AT-3?

The PCF8574AT-3 has a 100 kHz I2C-bus interface speed.

What is the operating temperature range for the PCF8574AT-3?

The PCF8574AT-3 operates from -40 °C to +85 °C.

How many I/O ports does the PCF8574AT-3 have?

The PCF8574AT-3 has 8 quasi-bidirectional I/O ports.

What type of interrupt output does the PCF8574AT-3 feature?

The PCF8574AT-3 features an active LOW open-drain interrupt output.

What is the total package sink capability of the PCF8574AT-3?

The PCF8574AT-3 has a total package sink capability of 80 mA.

What packages are available for the PCF8574AT-3?

The PCF8574AT-3 is available in DIP16, SO16, and SSOP20 packages.

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