Mfr Part #:

PCF8574T

Mfr Name: Philips

The NXP Semiconductors PCF8574T is an 8-bit I/O expander designed for I2C-bus applications. It provides 8 I/O lines and operates with a power supply of 3/5V.

✓ Total Stock: 74,685 pcs

$ Price Range: $2.95

PCF8574T Available from 5 distributors

✓ Authorised

✓ Non-Authorised

Distributor		Stock	Pricing	MOQ	PKG	Lead Time	Date Code	On Order Quantity	On Order Delivery
Romaks Technologies ✓ Non-Authorised Inventory information	72,320 pcs On Request	72320 pcs	On Request	1	On Request	On Request	On Request	On Request	On Request
PROSOFT ELECTRONICS ✓ Non-Authorised Inventory information	1,997 pcs On Request	1997 pcs	On Request	1	On Request	On Request	04+/00+	On Request	On Request
Fe Components ✓ Non-Authorised Inventory information	360 pcs On Request	360 pcs	On Request	1	On Request	On Request	On Request	On Request	On Request
Chanetech ✓ Non-Authorised Inventory information	6 pcs On Request	6 pcs	On Request	1	On Request	On Request	On Request	On Request	On Request
Hybrid Electronics ✓ Non-Authorised Inventory information	2 pcs On Request	2 pcs	On Request	1	On Request	On Request	On Request	On Request	On Request

PCF8574T Specifications Quick View

Most important parameters for selection – full specs in datasheet.

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Category	New Products
Manufacturer Name	Philips
Length	10.3 mm
Number of Bits	8
Number of Ports	1
Tape & Reel	No

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PCF8574T Description

Short technical summary and product information.

The PCF8574T from NXP Semiconductors is a remote 8-bit I/O expander that communicates via the I2C-bus. This component is designed to increase the number of available I/O ports in embedded systems. Up to eight PCF8574T devices can be connected to the same I2C bus, enabling a total of up to 64 I/O ports.

Key electrical specifications include a maximum clock frequency of 0.1 MHz and support for power supplies of 3V or 5V. The device offers 8 I/O lines and operates within a temperature range of -40°C to 85°C.

The PCF8574T is housed in a 16-pin SOIC package, suitable for surface mounting. Its package dimensions include a length of 10.3 mm. The component is rated for a peak reflow temperature of 260°C and has a Moisture Sensitivity Level (MSL) of 1.

This I/O expander is part of a family of General Purpose Input/Output (GPIO) devices from NXP Semiconductors, offering a simple solution for applications requiring additional I/Os. It is particularly useful in microcontroller-based projects where the number of available GPIO pins is limited.

PCF8574T Quick Information

Product Type: I/O Expander

Canonical Name: PCF8574T 8-Bit I/O Expander

Subcategory: 8-Bit I/O Expander

PCF8574T Compliance

RoHS Status: RoHS Compliant

Moisture Sensitivity Level (MSL): 1 Unlimited

REACH Status: REACH Unaffected

PCF8574T Estimated Pricing

Qty	Low	High
1+	$2.95	$2.95

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

PCF8574T Features

8-bit remote I/O expander for I2C-bus.
Provides 8 I/O lines.
Operates at 3V or 5V power supply.
Available in a 16-pin SOIC package.
Wide operating temperature range of -40°C to 85°C.

PCF8574T Applications

Expand I/O capabilities in microcontroller projects.
Interface with LCD modules like LCD1602.
Control external LEDs and other simple devices.
Suitable for embedded system designs.

PCF8574T FAQs

5 frequently asked questions generated from this part’s specifications.

What is the maximum clock frequency of the PCF8574T?

0.1 MHz

How many I/O lines does the PCF8574T support?

What is the operating temperature range of the PCF8574T?

-40°C to 85°C

What package type is used for the PCF8574T?

SOIC, SOP16, .4

What are the power supply voltage options for the PCF8574T?

3 V or 5 V