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
	PCA9557PW IC I/O EXPANDER I2C 8B 16TSSOP Texas Instruments	346	$1.85			Bulk	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
	PCAL9535APW,118 IC I/O PORT 16BIT 24TSSOP NXP USA Inc.	221	$2.98		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
	PCAL9535AHF,128 IC I/O EXPANDER 16BIT 24HWQFN NXP USA Inc.	267	$3.04		Agile	Tape & Reel (TR)	Active	16	I²C	Yes	POR	Open Drain, Push-Pull	10mA, 25mA	400 kHz	1.65V ~ 5.5V	-40°C ~ 85°C	Surface Mount	24-WFQFN Exposed Pad	24-HWQFN (4x4)
	PCA9555DB,118 IC I/O EXPANDER I2C 16B 24SSOP NXP USA Inc.	125	$3.05			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 (0.209", 5.30mm Width)	24-SSOP
	PCA9555APW,118 IC GPIO EXPANDER 24TSSOP NXP USA Inc.	425	$2.28			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
	PCAL9555APW,118 IC GPIO EXPANDER 24TSSOP NXP USA Inc.	21	$2.29		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
	PCA9675PW,118 IC I/O EXPANDER I2C 16B 24TSSOP NXP USA Inc.	33	$2.79			Tape & Reel (TR)	Active	16	I²C	Yes	POR	Push-Pull	100µA, 25mA	1 MHz	2.3V ~ 5.5V	-40°C ~ 85°C	Surface Mount	24-TSSOP (0.173", 4.40mm Width)	24-TSSOP
	MCP23018-E/MJ IC I/O EXPANDER I2C 16B 24QFN Microchip Technology	162	$2.02			Tube	Active	16	I²C	Yes	POR	Open Drain	25mA	3.4 MHz	1.8V ~ 5.5V	-40°C ~ 125°C	Surface Mount	24-VFQFN Exposed Pad	24-QFN (4x4)
	MCP23018-E/SO IC I/O EXPANDER I2C 16B 28SOIC Microchip Technology	206	$2.05			Tube	Active	16	I²C	Yes	POR	Open Drain	25mA	3.4 MHz	1.8V ~ 5.5V	-40°C ~ 125°C	Surface Mount	28-SOIC (0.295", 7.50mm Width)	28-SOIC
	MCP23016-I/SO IC I/O EXPANDER I2C 16B 28SOIC Microchip Technology	14	$2.08			Tube	Active	16	I²C	Yes	POR	Push-Pull	25mA	400 kHz	2V ~ 5.5V	-40°C ~ 85°C	Surface Mount	28-SOIC (0.295", 7.50mm Width)	28-SOIC
	PCF8575DBR IC I/O EXPANDER I2C 16B 24SSOP Texas Instruments	208	$3.38			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-SSOP (0.209", 5.30mm Width)	24-SSOP
	PCAL9555AHF,128 IC I/O EXPANDER 16BIT 24HWQFN NXP USA Inc.	121	$2.37		Agile	Tape & Reel (TR)	Active	16	I²C	Yes	POR	Open Drain, Push-Pull	10mA, 25mA	400 kHz	1.65V ~ 5.5V	-40°C ~ 85°C	Surface Mount	24-WFQFN Exposed Pad	24-HWQFN (4x4)
	MCP23S18-E/SO IC I/O EXPANDER SPI 16B 28SOIC Microchip Technology	56	$2.11			Tube	Active	16	SPI	Yes	-	Open Drain	25mA	10 MHz	1.8V ~ 5.5V	-40°C ~ 125°C	Surface Mount	28-SOIC (0.295", 7.50mm Width)	28-SOIC
	PCA9555PW,112 IC I/O EXPANDER I2C 16B 24TSSOP NXP USA Inc.	288	$2.16			Bulk	Active	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
	PCA9535APW,118 IC GPIO EXPANDER 16BIT 24TSSOP NXP USA Inc.	304	$2.43			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
	PCA9535AHF,128 IC I/O EXPANDER I2C 24HWQFN NXP USA Inc.	243	$2.46			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-HWQFN (4x4)
	PCA9555AHF,128 IC I/O EXPANDER I2C 24QFN NXP USA Inc.	249	$2.43			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-HWQFN (4x4)
	PCF8574AN IC I/O EXPANDER I2C 8B 16DIP Texas Instruments	111	$2.21			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
	PCA9538DW IC I/O EXPANDER I2C 8B 16SOIC Texas Instruments	80	$2.22			Tube	Active	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
	MCP23018-E/SS IC I/O EXPANDER I2C 16B 24SSOP Microchip Technology	69	$2.20			Tube	Active	16	I²C	Yes	POR	Open Drain	25mA	3.4 MHz	1.8V ~ 5.5V	-40°C ~ 125°C	Surface Mount	24-SSOP (0.209", 5.30mm Width)	24-SSOP