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

381 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
	PCA9535DWR IC I/O EXPANDER I2C 16B 24SOIC Texas Instruments	334	$1.85			Tape & Reel (TR)	Active	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
	TCA9539PWR IC I/O EXPANDER I2C 16B TSSOP Texas Instruments	311	$1.97			Tape & Reel (TR)	Active	16	I²C, SMBus	Yes	POR	Push-Pull	10mA, 25mA	400 kHz	1.65V ~ 5.5V	-40°C ~ 85°C	Surface Mount	24-TSSOP (0.173", 4.40mm Width)	24-TSSOP
	TCA9539RTWR IC I/O EXPANDER I2C 16B 24WQFN Texas Instruments	243	$1.97			Tape & Reel (TR)	Active	16	I²C, SMBus	Yes	POR	Push-Pull	10mA, 25mA	400 kHz	1.65V ~ 5.5V	-40°C ~ 85°C	Surface Mount	24-WFQFN Exposed Pad	24-WQFN (4x4)
	PCA9535EMTTXG IC I/O EXPANDER 16B 24WQFN onsemi	252	$2.42			Tape & Reel (TR)	Active	16	I²C, SMBus	Yes	POR	Push-Pull	10mA, 25mA	100 kHz	1.65V ~ 5.5V	-55°C ~ 125°C	Surface Mount	24-WFQFN Exposed Pad	24-QFN (4x4)
	TCA6416ARTWR IC I/O EXPANDER I2C 16B 24WQFN Texas Instruments	240	$2.03			Tape & Reel (TR)	Active	16	I²C, SMBus	Yes	POR	Push-Pull	10mA, 25mA	400 kHz	1.65V ~ 5.5V	-40°C ~ 85°C	Surface Mount	24-WFQFN Exposed Pad	24-WQFN (4x4)
	PCA9534APWR IC I/O EXPANDER I2C 8B 16TSSOP Texas Instruments	392	$2.06			Tape & Reel (TR)	Active	8	I²C, SMBus	Yes	POR	Push-Pull	10mA, 25mA	400 kHz	2.3V ~ 5.5V	-40°C ~ 85°C	Surface Mount	16-TSSOP (0.173", 4.40mm Width)	16-TSSOP
	PCA9534ARGVR IC I/O EXPANDER I2C 8B 16QFN Texas Instruments	250	$2.05			Tape & Reel (TR)	Active	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)
	PCA9534ARGTR IC I/O EXPANDER I2C 8B 16VQFN Texas Instruments	242	$2.04			Tape & Reel (TR)	Active	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)
	TCA9539QPWRQ1 IC I/O EXPANDER I2C 16BIT 24TSSO Texas Instruments	343	$2.33		Automotive, AEC-Q100	Tape & Reel (TR)	Active	16	I²C, SMBus	Yes	POR	Push-Pull	10mA, 25mA	400 kHz	1.65V ~ 3.6V	-40°C ~ 125°C	Surface Mount	24-TSSOP (0.173", 4.40mm Width)	24-TSSOP
	PCA9555DBQR IC I/O EXPANDER I2C 16B 24QSOP Texas Instruments	336	$2.48			Tape & Reel (TR)	Active	16	I²C, SMBus	Yes	POR	Push-Pull	10mA, 25mA	400 kHz	2.3V ~ 5.5V	-40°C ~ 85°C	Surface Mount	24-SSOP (0.154", 3.90mm Width)	24-SSOP
	PCF8575PWR IC I/O EXPANDER I2C 16B 24TSSOP Texas Instruments	314	$2.52			Tape & Reel (TR)	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
	TCA6424ARGJR IC I/O EXPANDER I2C 24B 32UQFN Texas Instruments	232	$2.52			Tape & Reel (TR)	Active	24	I²C, SMBus	Yes	POR	Push-Pull	10mA, 25mA	400 kHz	1.65V ~ 5.5V	-40°C ~ 85°C	Surface Mount	32-UFQFN Exposed Pad	32-UQFN (5x5)
	PCA9535PWR IC I/O EXPANDER I2C 16B 24TSSOP Texas Instruments	371	$2.64			Tape & Reel (TR)	Not For New Designs	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
	MCP23S17T-E/ML IC I/O EXPANDER SPI 16B 28QFN Microchip Technology	471	$2.00			Tape & Reel (TR)	Active	16	SPI	Yes	POR	Push-Pull	25mA	10 MHz	1.8V ~ 5.5V	-40°C ~ 125°C	Surface Mount	28-VQFN Exposed Pad	28-QFN (6x6)
	PCA9655EMTTXG IC I/O EXPANDER I2C 16B QFN-24 onsemi	227	$3.03			Tape & Reel (TR)	Active	16	I²C, SMBus	Yes	POR	Push-Pull	42mA	100 kHz	1.65V ~ 5.5V	-55°C ~ 125°C	Surface Mount	24-WFQFN Exposed Pad	24-QFN (4x4)
	MCP23017-E/SO IC I/O EXPANDER I2C 16B 28SOIC Microchip Technology	19	$1.58			Tube	Active	16	I²C	Yes	POR	Push-Pull	25mA	1.7 MHz	1.8V ~ 5.5V	-40°C ~ 125°C	Surface Mount	28-SOIC (0.295", 7.50mm Width)	28-SOIC
	PCA9655EDTR2G IC I/O EXPANDER I2C 16B 24-TSSOP onsemi	179	$3.12			Tape & Reel (TR)	Active	16	I²C, SMBus	Yes	POR	Push-Pull	42mA	100 kHz	1.65V ~ 5.5V	-55°C ~ 125°C	Surface Mount	24-TSSOP (0.173", 4.40mm Width)	24-TSSOP
	MCP23017-E/SS IC I/O EXPANDER I2C 16B 28SSOP Microchip Technology	48	$1.69			Tube	Active	16	I²C	Yes	POR	Push-Pull	25mA	1.7 MHz	1.8V ~ 5.5V	-40°C ~ 125°C	Surface Mount	28-SSOP (0.209", 5.30mm Width)	28-SSOP
	MCP23S17-E/SO IC I/O EXPANDER SPI 16B 28SOIC Microchip Technology	214	$1.65			Tube	Active	16	SPI	Yes	POR	Push-Pull	25mA	10 MHz	1.8V ~ 5.5V	-40°C ~ 125°C	Surface Mount	28-SOIC (0.295", 7.50mm Width)	28-SOIC
	ADP5587ACPZ-R7 IC EXPANDER/KEYBOARD CTRLR Analog Devices Inc.	239	$3.26			Tape & Reel (TR)	Active	18	I²C	Yes	Keypad Controller, POR	Open Drain	-	400 kHz	1.65V ~ 3.6V	-40°C ~ 85°C	Surface Mount	24-WFQFN Exposed Pad, CSP	24-LFCSP-WQ (4x4)