Interface - I/O Expanders

Category Introduction

Devices in this family are used in conjunction with microcontrollers, microprocessors, or similar devices for the purpose of increasing the number of signal connections available for connecting peripheral devices. The typical concept of operation involves the use of serial communications requiring only a few I/O lines on the host device to read/write the status of many input/output pins on the expander device. The technique exchanges speed of communication for increased connectivity, and is best suited for applications where fast response is not critical, such as in many human interface applications.

Product List

1060 Items

PDF	Mfr Part #	Quantity Available	UnitPrice	RFQ	Series	Packaging	Product Status	Number of I/O	Interface	Interrupt Output	Features	Output Type	Current - Output Source/Sink	Clock Frequency	Voltage - Supply	Operating Temperature	Mounting Type	Package / Case	Supplier Device Package
	CAT9534YI-GT2 IC I/O EXPANDER I2C 8B 16TSSOP onsemi	212	$1.12			Tape & Reel (TR)	Obsolete	8	I²C, SMBus	Yes	POR	Push-Pull	10mA, 24mA	400 kHz	2.3V ~ 5.5V	-40°C ~ 85°C	Surface Mount	16-TSSOP (0.173", 4.40mm Width)	16-TSSOP
	PCA9534ARGTRG4 IC I/O EXPANDER I2C 8B 16VQFN Texas Instruments	410	$0.00			Tape & Reel (TR)	Discontinued at Digi-Key	8	I²C, SMBus	Yes	POR	Push-Pull	10mA, 25mA	400 kHz	2.3V ~ 5.5V	-40°C ~ 85°C	Surface Mount	16-VFQFN Exposed Pad	16-VQFN (3x3)
	PCA9534DWG4 IC I/O EXPANDER I2C 8B 16SOIC Texas Instruments	329	$0.00			Tube	Discontinued at Digi-Key	8	I²C, SMBus	Yes	POR	Push-Pull	10mA, 25mA	400 kHz	2.3V ~ 5.5V	-40°C ~ 85°C	Surface Mount	16-SOIC (0.295", 7.50mm Width)	16-SOIC
	PCA9534RGVRG4 IC I/O EXPANDER I2C 8B 16QFN Texas Instruments	71	$0.00			Tape & Reel (TR)	Discontinued at Digi-Key	8	I²C, SMBus	Yes	POR	Push-Pull	10mA, 25mA	400 kHz	2.3V ~ 5.5V	-40°C ~ 85°C	Surface Mount	16-VQFN Exposed Pad	16-VQFN (4x4)
	PCA9535PWG4 IC I/O EXPANDER I2C 16B 24TSSOP Texas Instruments	100	$0.00			Tube	Discontinued at Digi-Key	16	I²C, SMBus	Yes	POR	Push-Pull	10mA, 25mA	400 kHz	2.3V ~ 5.5V	-40°C ~ 85°C	Surface Mount	24-TSSOP (0.173", 4.40mm Width)	24-TSSOP
	PCA9535PWRG4 IC I/O EXPANDER I2C 16B 24TSSOP Texas Instruments	587	$0.00			Tape & Reel (TR)	Discontinued at Digi-Key	16	I²C, SMBus	Yes	POR	Push-Pull	10mA, 25mA	400 kHz	2.3V ~ 5.5V	-40°C ~ 85°C	Surface Mount	24-TSSOP (0.173", 4.40mm Width)	24-TSSOP
	PCA9539PWG4 IC I/O EXPANDER I2C 16B 24TSSOP Texas Instruments	566	$0.00			Tube	Obsolete	16	I²C, SMBus	Yes	POR	Push-Pull	10mA, 25mA	400 kHz	2.3V ~ 5.5V	-40°C ~ 85°C	Surface Mount	24-TSSOP (0.173", 4.40mm Width)	24-TSSOP
	PCA9539PWRG4 IC I/O EXPANDER I2C 16B 24TSSOP Texas Instruments	588	$0.00			Tape & Reel (TR)	Discontinued at Digi-Key	16	I²C, SMBus	Yes	POR	Push-Pull	10mA, 25mA	400 kHz	2.3V ~ 5.5V	-40°C ~ 85°C	Surface Mount	24-TSSOP (0.173", 4.40mm Width)	24-TSSOP
	PCA9555DWRG4 IC I/O EXPANDER I2C 16B 24SOIC Texas Instruments	593	$0.00			Tape & Reel (TR)	Discontinued at Digi-Key	16	I²C, SMBus	Yes	POR	Push-Pull	10mA, 25mA	400 kHz	2.3V ~ 5.5V	-40°C ~ 85°C	Surface Mount	24-SOIC (0.295", 7.50mm Width)	24-SOIC
	PCA9555PWRG4 IC I/O EXPANDER I2C 16B 24TSSOP Texas Instruments	494	$0.00			Tape & Reel (TR)	Discontinued at Digi-Key	16	I²C, SMBus	Yes	POR	Push-Pull	10mA, 25mA	400 kHz	2.3V ~ 5.5V	-40°C ~ 85°C	Surface Mount	24-TSSOP (0.173", 4.40mm Width)	24-TSSOP
	PCA9555RGERG4 IC I/O EXPANDER I2C 16B 24QFN Texas Instruments	357	$0.00			Tape & Reel (TR)	Discontinued at Digi-Key	16	I²C, SMBus	Yes	POR	Push-Pull	10mA, 25mA	400 kHz	2.3V ~ 5.5V	-40°C ~ 85°C	Surface Mount	24-VFQFN Exposed Pad	24-VQFN (4x4)
	PCF8574DGVRG4 IC I/O EXPANDER I2C 8B 20TVSOP Texas Instruments	455	$0.00			Tape & Reel (TR)	Discontinued at Digi-Key	8	I²C	Yes	POR	Push-Pull	1mA, 25mA	100 kHz	2.5V ~ 6V	-40°C ~ 85°C	Surface Mount	20-TFSOP (0.173", 4.40mm Width)	20-TVSOP
	PCF8574DWRG4 IC I/O EXPANDER I2C 8B 16SOIC Texas Instruments	541	$0.00			Tape & Reel (TR)	Discontinued at Digi-Key	8	I²C	Yes	POR	Push-Pull	1mA, 25mA	100 kHz	2.5V ~ 6V	-40°C ~ 85°C	Surface Mount	16-SOIC (0.295", 7.50mm Width)	16-SOIC
	PCF8574PWG4 IC I/O EXPANDER I2C 8B 20TSSOP Texas Instruments	107	$0.00			Tube	Discontinued at Digi-Key	8	I²C	Yes	POR	Push-Pull	1mA, 25mA	100 kHz	2.5V ~ 6V	-40°C ~ 85°C	Surface Mount	20-TSSOP (0.173", 4.40mm Width)	20-TSSOP
	PCF8575CDWG4 IC I/O EXPANDER I2C 16B 24SOIC Texas Instruments	85	$0.00			Bulk	Discontinued at Digi-Key	16	I²C, SMBus	Yes	POR	Open Drain	10mA, 25mA	400 kHz	4.5V ~ 5.5V	-40°C ~ 85°C	Surface Mount	24-SOIC (0.295", 7.50mm Width)	24-SOIC
	PCF8575DGVRG4 IC I/O EXPANDER I2C 16B 24TVSOP Texas Instruments	553	$0.00			Tape & Reel (TR)	Discontinued at Digi-Key	16	I²C, SMBus	Yes	POR	Push-Pull	1mA, 25mA	400 kHz	2.5V ~ 5.5V	-40°C ~ 85°C	Surface Mount	24-TFSOP (0.173", 4.40mm Width)	24-TVSOP
	PCF8575PWG4 IC I/O EXPANDER I2C 16B 24TSSOP Texas Instruments	54	$0.00			Bulk	Active	16	I²C, SMBus	Yes	POR	Push-Pull	1mA, 25mA	400 kHz	2.5V ~ 5.5V	-40°C ~ 85°C	Surface Mount	24-TSSOP (0.173", 4.40mm Width)	24-TSSOP
	TCA6408PW IC I/O EXPANDER I2C 8B 16TSSOP Texas Instruments	160	$0.00			Tube	Obsolete	8	I²C, SMBus	Yes	POR	Push-Pull	10mA, 25mA	400 kHz	1.65V ~ 5.5V	-40°C ~ 85°C	Surface Mount	16-TSSOP (0.173", 4.40mm Width)	16-TSSOP
	TCA6408PWG4 IC I/O EXPANDER I2C 8B 16TSSOP Texas Instruments	80	$0.00			Tube	Obsolete	8	I²C, SMBus	Yes	POR	Push-Pull	10mA, 25mA	400 kHz	1.65V ~ 5.5V	-40°C ~ 85°C	Surface Mount	16-TSSOP (0.173", 4.40mm Width)	16-TSSOP
	TCA6408PWRG4 IC I/O EXPANDER I2C 8B 16TSSOP Texas Instruments	586	$0.00			Tape & Reel (TR)	Obsolete	8	I²C, SMBus	Yes	POR	Push-Pull	10mA, 25mA	400 kHz	1.65V ~ 5.5V	-40°C ~ 85°C	Surface Mount	16-TSSOP (0.173", 4.40mm Width)	16-TSSOP