NXP 8-Channel I/O Expander SO 16, PCF8574T/3,518

View all I/O Expanders
Bulk discount available

Subtotal (1 pack of 10 units)*

£9.90

(exc. VAT)

£11.90

(inc. VAT)

Add to Basket
Select or type quantity
Limited stock
  • Plus 50 left, shipping from 09 February 2026
  • Plus 160 left, shipping from 16 February 2026
Need more? Click ‘Check delivery dates’ to find extra stock and lead times.
Units
Per unit
Per Pack*
10 - 40£0.99£9.90
50 - 90£0.97£9.70
100 - 240£0.95£9.50
250 - 490£0.93£9.30
500 +£0.913£9.13

*price indicative

Packaging Options:
RS Stock No.:
219-4648
Mfr. Part No.:
PCF8574T/3,518
Brand:
NXP
Find similar products by selecting one or more attributes.
Select all

Brand

NXP

Product Type

I/O Expander

Number of I/O Channels

8

Package Type

SO

Clock Frequency

100kHz

Mount Type

Surface

Maximum Supply Voltage

5.5V

Minimum Supply Voltage

2.3V

Pin Count

16

Minimum Operating Temperature

-40°C

Maximum Operating Temperature

85°C

Length

10.5mm

Series

PCF8574

Width

7.6 mm

Height

2.65mm

Standards/Approvals

No

Automotive Standard

No

The NXP bidirectional I2C bus (serial clock (SCL), serial data (SDA)). The devices consist of eight quasi bidirectional ports, 100 kHz I2C bus interface, three hardware address inputs and interrupt output operating between 2.5 V and 6 V. The quasi bidirectional port can be independently assigned as an input to monitor interrupt status or keypads, or as an output to activate indicator devices such as LEDs.

Latched outputs directly drive LEDs

Total package sink capability of 80 mA

Active low open-drain interrupt output

Related links