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See Technical Specifications

PCF8574DW

8-bit 2.5- to 5.5-V I2C/SMBus I/O expander with interrupt

Manufacturer:

Texas Instruments, Inc
Mfr.Part #:

PCF8574DW
Datasheet:

PCF8574DW Datasheet (PDF)
Number of I/Os:

8
Features:

Interrupt pin
Supply voltage (min) (V):

2.5
Supply voltage (max) (V):

6
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Request Free CAD Models for PCF8574DW

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PCF8574DW General Description

This 8-bit input/output (I/O) expander for the two-line bidirectional bus (I²C) is designed for 2.5-V to 6-V V_CC operation.

The PCF8574 device provides general-purpose remote I/O expansion for most microcontroller families by way of the I²C interface [serial clock (SCL), serial data (SDA)].

The device 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. At power on, the I/Os are high. In this mode, only a current source to V_CC is active.

Key Features

Low Standby-Current Consumption of 10 µA Max
I²C to Parallel-Port Expander
Open-Drain Interrupt Output
Compatible With Most Microcontrollers
Latched Outputs With High-Current Drive
Capability for Directly Driving LEDs
Latch-Up Performance Exceeds 100 mA
Per JESD 78, Class II

Specifications

Number of I/Os	8	Features	Interrupt pin
Supply voltage (min) (V)	2.5	Supply voltage (max) (V)	6
Addresses	8	Rating	Catalog
Frequency (max) (MHz)	0.1	Operating temperature range (°C)	-40 to 85
feature-number-of-i-os	8	feature-number-of-addresses	8
feature-manual-reset	No	feature-interface-type	I2C
feature-interface-speed-khz	100	feature-i2c-bus-interface-mode	Standard Mode
feature-interrupt-output	Yes	feature-output-type	Open Drain
feature-minimum-operating-supply-voltage-v	2.5	feature-maximum-operating-supply-voltage-v	6
feature-maximum-sink-current-per-bit-ma	25	feature-maximum-source-current-per-bit-ma	-1
feature-maximum-quiescent-current-ua	10	feature-packaging	Tube
feature-rad-hard		feature-pin-count	16
feature-cecc-qualified	No	feature-esd-protection	Yes
feature-military	No	feature-aec-qualified	No
feature-aec-qualified-number		feature-auto-motive	No
feature-p-pap	No	feature-eccn-code	EAR99
feature-svhc	Yes	feature-svhc-exceeds-threshold	No

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Ratings and Reviews

T**r 04/09/2024

delivered in less than three weeks. well thank you.

E**a 09/19/2022

It's great this setup.

C**i 04/30/2021

Avaq's delivery speed is unparalleled! The PEX8714-AB80BI G components I ordered arrived sooner than expected, allowing me to complete my project ahead of schedule. Thank you, Avaq! - Andrew Wilson

C**b 04/02/2021

Everything is fine! Thanks for the work!