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
	MCP23S17-E/SS IC I/O EXPANDER SPI 16B 28SSOP Microchip Technology	230	$1.76			Tube	Active	16	SPI	Yes	POR	Push-Pull	25mA	10 MHz	1.8V ~ 5.5V	-40°C ~ 125°C	Surface Mount	28-SSOP (0.209", 5.30mm Width)	28-SSOP
	PCF8574N IC I/O EXPANDER I2C 8B 16DIP Texas Instruments	384	$2.30			Bulk	Active	8	I²C	Yes	POR	Push-Pull	1mA, 25mA	100 kHz	2.5V ~ 6V	-40°C ~ 85°C	Through Hole	16-DIP (0.300", 7.62mm)	16-PDIP
	TCA6408ARSVR IC I/O EXPANDER I2C 8B 16QFN Texas Instruments	598	$1.24			Tape & Reel (TR)	Active	8	I²C, SMBus	Yes	POR	Push-Pull	10mA, 25mA	400 kHz	1.65V ~ 5.5V	-40°C ~ 85°C	Surface Mount	16-UFQFN	16-UQFN (2.6x1.8)
	PCA9536DGKR IC I/O EXPANDER I2C 4B 8VSSOP Texas Instruments	622	$1.56			Tape & Reel (TR)	Active	4	I²C, SMBus	No	POR	Push-Pull	10mA, 25mA	400 kHz	2.3V ~ 5.5V	-40°C ~ 85°C	Surface Mount	8-TSSOP, 8-MSOP (0.118", 3.00mm Width)	8-VSSOP
	TCA9536DGKR REMOTE 4-BIT IC AND SMBUS I/O EX Texas Instruments	356	$1.54			Tape & Reel (TR)	Active	4	I²C, SMBus	Yes	POR	Open Drain	10mA, 25mA	1 MHz	1.65V ~ 5.5V	-40°C ~ 125°C	Surface Mount	8-TSSOP, 8-MSOP (0.118", 3.00mm Width)	8-VSSOP
	TCA6408APWR IC I/O EXPANDER I2C 8B 16TSSOP Texas Instruments	555	$1.55			Tape & Reel (TR)	Active	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
	TCA9534APWR IC I/O EXPANDER I2C 8B 16TSSOP Texas Instruments	380	$1.58			Tape & Reel (TR)	Active	8	I²C	Yes	-	Push-Pull	-	400 kHz	1.65V ~ 5.5V	-40°C ~ 85°C	Surface Mount	16-TSSOP (0.173", 4.40mm Width)	16-TSSOP
	TCA9554APWR IC I/O EXPANDER I2C 8BIT 16TSSOP Texas Instruments	335	$1.67			Tape & Reel (TR)	Active	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
	TCA9554DBQR IC I/O EXPANDER I2C 8BIT 16TSSOP Texas Instruments	140	$1.63			Tape & Reel (TR)	Active	8	I²C	Yes	POR	Push-Pull	-	400 kHz	1.65V ~ 5.5V	-40°C ~ 85°C	Surface Mount	16-SSOP (0.154", 3.90mm Width)	16-SSOP
	TCA9554ADBR IC SMBUS I/O EXPANDER I2C 16SSOP Texas Instruments	231	$1.67			Tape & Reel (TR)	Active	8	I²C, SMBus	Yes	POR	Push-Pull	-	400 kHz	1.65V ~ 5.5V	-40°C ~ 85°C	Surface Mount	16-SSOP (0.209", 5.30mm Width)	16-SSOP
	PCA9557PWR IC I/O EXPANDER I2C 8B 16TSSOP Texas Instruments	137	$1.57			Tape & Reel (TR)	Active	8	I²C, SMBus	No	POR	Open Drain, 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
	PCA9557RGVR IC I/O EXPANDER I2C 8B 16QFN Texas Instruments	380	$1.57			Tape & Reel (TR)	Active	8	I²C, SMBus	No	POR	Open Drain, Push-Pull	10mA, 25mA	400 kHz	2.3V ~ 5.5V	-40°C ~ 85°C	Surface Mount	16-VQFN Exposed Pad	16-VQFN (4x4)
	PCA9554ARGTR IC I/O EXPANDER I2C 8B 16QFN Texas Instruments	601	$1.56			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)
	PCAL6408ABSHP IC I/O EXPANDER 8BIT I2C 16HVQFN NXP USA Inc.	36	$1.55			Tape & Reel (TR)	Active	8	I²C, SMBus	Yes	POR	Open Drain, Push-Pull	10mA, 25mA	400 kHz	1.65V ~ 5.5V	-40°C ~ 85°C	Surface Mount	16-VFQFN Exposed Pad	16-HVQFN (3x3)
	PCA9536DP,118 IC I/O EXPANDER I2C 4B 8TSSOP NXP USA Inc.	328	$1.57			Tape & Reel (TR)	Active	4	I²C, SMBus	No	POR	Push-Pull	10mA, 25mA	400 kHz	2.3V ~ 5.5V	-40°C ~ 85°C	Surface Mount	8-TSSOP, 8-MSOP (0.118", 3.00mm Width)	8-TSSOP
	CAT9555YI-T2 IC I/O EXPANDER I2C 16B 24TSSOP onsemi	151	$1.99			Tape & Reel (TR)	Active	16	I²C, SMBus	Yes	POR	Push-Pull	10mA, 24mA	400 kHz	2.3V ~ 5.5V	-40°C ~ 85°C	Surface Mount	24-TSSOP (0.173", 4.40mm Width)	24-TSSOP
	PCA9534PWR IC I/O EXPANDER I2C 8B 16TSSOP Texas Instruments	31	$1.61			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
	TCA9535RGER IC I/O EXPANDER I2C 16B 24VQFN Texas Instruments	150	$1.66			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-VFQFN Exposed Pad	24-VQFN (4x4)
	PCAL6416APW,118 IC I/O EXPANDER 16BIT 24TSSOP NXP USA Inc.	530	$1.71		Agile	Tape & Reel (TR)	Active	16	I²C, SMBus	Yes	POR	Open Drain, 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
	PCA9538PWR IC I/O EXPANDER I2C 8B 16TSSOP Texas Instruments	462	$1.82			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