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
	PCA9536D IC I/O EXPANDER I2C 4B 8SOIC Texas Instruments	144	$1.83			Tube	Last Time Buy	4	I²C, SMBus	No	POR	Push-Pull	10mA, 25mA	400 kHz	2.3V ~ 5.5V	-40°C ~ 85°C	Surface Mount	8-SOIC (0.154", 3.90mm Width)	8-SOIC
	PCA9557D IC I/O EXPANDER I2C 8B 16SOIC Texas Instruments	317	$1.85			Tube	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-SOIC (0.154", 3.90mm Width)	16-SOIC
	PCA9554APW IC I/O EXPANDER I2C 8B 16TSSOP Texas Instruments	456	$2.12			Tube	Not For New Designs	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
	MCP23018-E/SP IC I/O EXPANDER I2C 16B 28SDIP Microchip Technology	36	$2.09			Tube	Active	16	I²C	Yes	POR	Open Drain	25mA	3.4 MHz	1.8V ~ 5.5V	-40°C ~ 125°C	Through Hole	28-DIP (0.300", 7.62mm)	28-SPDIP
	PCF8574DW IC I/O EXPANDER I2C 8B 16SOIC Texas Instruments	289	$2.27			Tube	Active	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
	PCA9534DW IC I/O EXPANDER I2C 8B 16SOIC Texas Instruments	38	$2.48			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
	PCA9554DW IC I/O EXPANDER I2C 8B 16SOIC Texas Instruments	257	$2.68			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
	PCA9535DB IC I/O EXPANDER I2C 16B 24SSOP Texas Instruments	98	$2.75			Bulk	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
	PCA9539DB IC I/O EXPANDER I2C 16B 24SSOP Texas Instruments	345	$2.79			Tube	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
	PI4IOE5V9538LE IC I/O EXPANDER 8-BIT 16TSSOP Diodes Incorporated	89	$1.59			Tube	Active	8	SMBus	Yes	POR	Open Drain	-	400 kHz	2.3V ~ 5.5V	-	Surface Mount	16-TSSOP (0.173", 4.40mm Width)	16-TSSOP
	PCA9538DB IC I/O EXPANDER I2C 8B 16SSOP Texas Instruments	401	$2.19			Tube	Active	8	I²C, SMBus	Yes	POR	Push-Pull	10mA, 25mA	400 kHz	2.3V ~ 5.5V	-40°C ~ 85°C	Surface Mount	16-SSOP (0.209", 5.30mm Width)	16-SSOP
	PCA9534ADW IC I/O EXPANDER I2C 8B 16SOIC Texas Instruments	316	$2.44			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
	PCA9535D,112 IC I/O EXPANDER I2C 16B 24SOIC NXP USA Inc.	364	$2.54			Tube	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-SO
	PCA9554DB IC I/O EXPANDER I2C 8B 16SSOP Texas Instruments	194	$2.63			Tube	Active	8	I²C, SMBus	Yes	POR	Push-Pull	10mA, 25mA	400 kHz	2.3V ~ 5.5V	-40°C ~ 85°C	Surface Mount	16-SSOP (0.209", 5.30mm Width)	16-SSOP
	MAX7327AATG+ IC I/O EXPANDER I2C QFN Analog Devices Inc./Maxim Integrated	114	$4.72			Tube	Active	4	I²C	Yes	POR	Open Drain, Push-Pull	20mA	400 kHz	1.71V ~ 5.5V	-40°C ~ 125°C	Surface Mount	24-WFQFN Exposed Pad	24-TQFN-EP (3.5x3.5)
	PCA9534ADB IC I/O EXPANDER I2C 8B 16SSOP Texas Instruments	162	$2.46			Tube	Active	8	I²C, SMBus	Yes	POR	Push-Pull	10mA, 25mA	400 kHz	2.3V ~ 5.5V	-40°C ~ 85°C	Surface Mount	16-SSOP (0.209", 5.30mm Width)	16-SSOP
	MAX7329AWE+ IC I/O EXPANDER I2C 8B 16SOIC Analog Devices Inc./Maxim Integrated	294	$2.97			Tube	Active	8	I²C	Yes	POR	Open Drain	25mA	100 kHz	2.5V ~ 5.5V	-40°C ~ 125°C	Surface Mount	16-SOIC (0.295", 7.50mm Width)	16-SOIC
	PCA9500D IC I/O EXPANDER I2C 8B 16SOIC NXP USA Inc.	21	$0.98			Bulk	Active	-	-	-	-	-	-	-	-	-	-	-	-
	MC68B21CP-G MC68B21 - PERIPHERAL INTERFACE A Rochester Electronics, LLC	7	$91.22			Bulk	Active	-	-	-	-	-	-	-	-	-	-	-	-
	PCA9536DR IC I/O EXPANDER I2C 4B 8SOIC Texas Instruments	75	$1.53			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-SOIC (0.154", 3.90mm Width)	8-SOIC