Product Summary

The PCF8574PWR is a Remote 8-bit I/O expander. It provides general purpose remote I/O expansion for most microcontroller families via the I2C interface. The PCF8574PWR features an 8-bit quasi-bidirectional I/O port (P0–P7), including latched outputs with high-current drive capability for directly driving LEDs. Each quasi-bidirectional I/O can be used as an input or output without the use of a data-direction control signal. The PCF8574PWR provides an open-drain output (INT) that can be connected to the interrupt input of a microcontroller.

Parametrics

PCF8574PWR absolute maximum ratings: (1)VCC Supply voltage range: –0.5 to 7 V; (2)VI Input voltage range: –0.5 to VCC + 0.5 V; (3)VO Output voltage range: –0.5 to VCC + 0.5 V; (4)IIK Input clamp current VI < 0: –20 mA; (5)IOK Output clamp current VO < 0: –20 mA; (6)IOK Input/output clamp current VO < 0 or VO > VCC: ±400 mA; (7)IOL Continuous output low current VO = 0 to VCC: 50 mA; (8)IOH Continuous output high current VO = 0 to VCC: –4 mA; (9)Continuous current through VCC or GND: ±100 mA; (10)Tstg Storage temperature range: –65 to 150 ℃.

Features

PCF8574PWR features: (1)Low Standby-Current Consumption of 10 μA Max; (2)Latched Outputs With High-Current Drive Capability for Directly Driving LEDs; (3)I2C to Parallel-Port Expander; (4)Latch-Up Performance Exceeds 100 mA Per JESD 78, Class II; (5)Open-Drain Interrupt Output ; (6)Compatible With Most Microcontrollers.

Diagrams

PCF8574PWR diagram

Image Part No Mfg Description Data Sheet Download Pricing
(USD)
Quantity
PCF8574PWR
PCF8574PWR

Texas Instruments

I/O Expanders, Repeaters & Hubs 8bit I/O Expndr

Data Sheet

0-1: $0.90
1-25: $0.72
25-100: $0.54
100-250: $0.50
PCF8574PWRE4
PCF8574PWRE4

Texas Instruments

I/O Expanders, Repeaters & Hubs Remote 8-Bit I/O Expander for I2C-Bus

Data Sheet

0-1540: $0.47
1540-2000: $0.47
2000-5000: $0.46
5000-10000: $0.45
PCF8574PWRG4
PCF8574PWRG4

Texas Instruments

I/O Expanders, Repeaters & Hubs Remote 8-Bit I/O Expander

Data Sheet

0-1540: $0.47
1540-2000: $0.47
2000-5000: $0.46
5000-10000: $0.45