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
	PCA9555DWRG4 IC I/O EXPANDER I2C 16B 24SOIC Texas Instruments	248	$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	171	$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	325	$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)
	PCF8574DWRG4 IC I/O EXPANDER I2C 8B 16SOIC Texas Instruments	230	$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	435	$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	118	$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	45	$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	310	$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
	STMPE1600QTR IC EXPANDER 16BIT 24QFN STMicroelectronics	420	$0.00		Xpander Logic™	Tape & Reel (TR)	Obsolete	16	I²C	Yes	POR	Open Drain	4mA	400 kHz	1.65V ~ 3.6V	-40°C ~ 85°C	Surface Mount	24-VFQFN Exposed Pad	24-QFN
	PCA9536DP/DG,118 IC I/O EXPANDER I2C 4B 8TSSOP NXP USA Inc.	1,683	$0.53			Tape & Reel (TR)	Obsolete	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
	STMPE1801BJR IC PORT EXPANDER 18BIT 25FIPCHIP STMicroelectronics	99	$0.00		Xpander Logic™	Tape & Reel (TR)	Obsolete	18	I²C	Yes	Keypad Controller, POR	Push-Pull	4mA	400 kHz	1.65V ~ 3.6V	-40°C ~ 85°C	Surface Mount	25-WFBGA, WLCSP	25-FlipChip (2x2)
	PCA8574TS,118 IC I/O EXPANDER I2C 8B 20SSOP NXP USA Inc.	342	$0.00			Tape & Reel (TR)	Obsolete	8	I²C	Yes	POR	Push-Pull	100µA, 25mA	400 kHz	2.3V ~ 5.5V	-40°C ~ 85°C	Surface Mount	20-LSSOP (0.173", 4.40mm Width)	20-SSOP
	PCAL6416AERX IC I/O EXPANDER 16BIT 24UFBGA NXP USA Inc.	78	$0.00		Agile	Tape & Reel (TR)	Obsolete	16	I²C, SMBus	Yes	POR	Open Drain, Push-Pull	10mA, 25mA	400 kHz	1.65V ~ 5.5V	-40°C ~ 85°C	Surface Mount	24-UFBGA	24-UFBGA (2x2)
	PCA8574AD,518 IC I/O EXPANDER I2C 8B 16SOIC NXP USA Inc.	259	$0.00			Tape & Reel (TR)	Obsolete	8	I²C	Yes	POR	Push-Pull	100µA, 25mA	400 kHz	2.3V ~ 5.5V	-40°C ~ 85°C	Surface Mount	16-SOIC (0.295", 7.50mm Width)	16-SO
	PCA9505DGG,118 IC I/O EXPANDER I2C 40B 56TSSOP NXP USA Inc.	116	$0.00			Tape & Reel (TR)	Obsolete	40	I²C	Yes	POR	Push-Pull	10mA, 25mA	400 kHz	2.3V ~ 5.5V	-40°C ~ 85°C	Surface Mount	56-TFSOP (0.240", 6.10mm Width)	56-TSSOP
	MCP23017-E/SSVAO EXPANDERS Microchip Technology	559	$0.00		Automotive, AEC-Q100	Tube	Active	16	I²C	Yes	POR	Open Drain	25mA	10 MHz	4.5V ~ 5.5V	-40°C ~ 125°C	Surface Mount	28-SSOP (0.209", 5.30mm Width)	28-SSOP
	PCA9554DTR2G IC I/O EXPANDER SMBUS 16TSSOP onsemi	526	$0.00			Tape & Reel (TR)	Obsolete	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
	PCF8574TS/3,112 IC I/O EXPANDER I2C 8B 20SSOP NXP USA Inc.	116	$0.00			Tube	Obsolete	8	I²C	Yes	POR	Push-Pull	300µA, 25mA	100 kHz	2.5V ~ 6V	-40°C ~ 85°C	Surface Mount	20-LSSOP (0.173", 4.40mm Width)	20-SSOP
	PCA9554AD,112 IC I/O EXPANDER I2C 8B 16SOIC NXP USA Inc.	396	$0.68			Tube	Obsolete	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-SO
	PCA9554APW,112 IC I/O EXPANDER I2C 8B 16TSSOP NXP USA Inc.	720	$0.75			Tube	Obsolete	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