Integrated Circuits (ICs)

PCF8574ARGYR

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8-BIT 2.5- TO 5.5-V I2C/SMBUS I/O EXPANDER WITH INTERRUPT

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Search across all available documentation for this part.

DocumentsI2C Dynamic Addressing Understanding Transient Drive Strength vs. DC Drive Strength in Level-Shifters (Rev. A)+12

Integrated Circuits (ICs)

PCF8574ARGYR

Active

Texas Instruments

8-BIT 2.5- TO 5.5-V I2C/SMBUS I/O EXPANDER WITH INTERRUPT

Deep-Dive with AI

DocumentsI2C Dynamic Addressing Understanding Transient Drive Strength vs. DC Drive Strength in Level-Shifters (Rev. A)+12

Specifications Series Pricing Description Documents

Technical Specifications

Parameters and characteristics for this part

Specification	PCF8574ARGYR

Clock Frequency	100 kHz
Current - Output Source/Sink	1 mA, 25 mA
Features	POR
Interface	I2C
Interrupt Output	True
Mounting Type	Surface Mount
Number of I/O	8
Operating Temperature [Max]	85 °C
Operating Temperature [Min]	-40 °C
Output Type	Push-Pull
Package / Case	20-VFQFN Exposed Pad
Supplier Device Package	20-VQFN (3.5x4.5)
Voltage - Supply [Max]	6 V
Voltage - Supply [Min]	2.5 V

PCF8574A Series

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

Part	Features	Operating Temperature [Max]	Operating Temperature [Min]	Package / Case	Package / Case [y]	Package / Case [y]	Output Type	Voltage - Supply [Min]	Voltage - Supply [Max]	Interface	Clock Frequency	Mounting Type	Current - Output Source/Sink	Supplier Device Package	Number of I/O	Package / Case [x]
Texas Instruments PCF8574DGVRG4	POR	85 °C	-40 °C	20-TFSOP	4.4 mm	0.173 in	Push-Pull	2.5 V	6 V	I2C	100 kHz	Surface Mount	1 mA 25 mA	20-TVSOP	8
Texas Instruments PCF8574DWR	POR	85 °C	-40 °C	16-SOIC		7.5 mm	Push-Pull	2.5 V	6 V	I2C	100 kHz	Surface Mount	1 mA 25 mA	16-SOIC	8	0.295 in
Texas Instruments PCF8574APWG4	POR	85 °C	-40 °C	20-TSSOP		4.4 mm	Push-Pull	2.5 V	6 V	I2C	100 kHz	Surface Mount	1 mA 25 mA	20-TSSOP	8	0.173 in
Texas Instruments PCF8574ADGVR	POR	85 °C	-40 °C	20-TFSOP	4.4 mm	0.173 in	Push-Pull	2.5 V	6 V	I2C	100 kHz	Surface Mount	1 mA 25 mA	20-TVSOP	8
Texas Instruments PCF8574DW	POR	85 °C	-40 °C	16-SOIC		7.5 mm	Push-Pull	2.5 V	6 V	I2C	100 kHz	Surface Mount	1 mA 25 mA	16-SOIC	8	0.295 in
Texas Instruments PCF8574ARGYR	POR	85 °C	-40 °C	20-VFQFN Exposed Pad			Push-Pull	2.5 V	6 V	I2C	100 kHz	Surface Mount	1 mA 25 mA	20-VQFN (3.5x4.5)	8
Texas Instruments PCF8574ADWR	POR	85 °C	-40 °C	16-SOIC		7.5 mm	Push-Pull	2.5 V	6 V	I2C	100 kHz	Surface Mount	1 mA 25 mA	16-SOIC	8	0.295 in
Texas Instruments PCF8574PWG4	POR	85 °C	-40 °C	20-TSSOP		4.4 mm	Push-Pull	2.5 V	6 V	I2C	100 kHz	Surface Mount	1 mA 25 mA	20-TSSOP	8	0.173 in
Texas Instruments PCF8574RGTR	POR	85 °C	-40 °C	16-VFQFN Exposed Pad			Push-Pull	2.5 V	6 V	I2C	100 kHz	Surface Mount	1 mA 25 mA	16-VQFN (3x3)	8
Texas Instruments PCF8574DWRG4	POR	85 °C	-40 °C	16-SOIC		7.5 mm	Push-Pull	2.5 V	6 V	I2C	100 kHz	Surface Mount	1 mA 25 mA	16-SOIC	8	0.295 in

Pricing

Prices provided here are for design reference only. For realtime values and availability, please visit the distributors directly

Distributor	Package	Quantity	$

Digikey	Cut Tape (CT)	1	$ 1.86
		10	$ 1.67
		25	$ 1.58
		100	$ 1.34
		250	$ 1.26
		500	$ 1.10
		1000	$ 0.91
	Digi-Reel®	1	$ 1.86
		10	$ 1.67
		25	$ 1.58
		100	$ 1.34
		250	$ 1.26
		500	$ 1.10
		1000	$ 0.91
	Tape & Reel (TR)	3000	$ 0.85
		6000	$ 0.82
Texas Instruments	LARGE T&R	1	$ 1.40
		100	$ 1.15
		250	$ 0.83
		1000	$ 0.62

Description

General part information

PCF8574A Series

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