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
	PCA9537DP,118 IC I/O EXPANDER I2C 4B 10TSSOP NXP USA Inc.	950	$0.79			Tape & Reel (TR)	Obsolete	4	I²C, SMBus	Yes	POR	Push-Pull	10mA, 25mA	400 kHz	2.3V ~ 5.5V	-40°C ~ 85°C	Surface Mount	10-TFSOP, 10-MSOP (0.118", 3.00mm Width)	10-TSSOP
	PCA9555PW/DG,118 IC I/O EXPANDER I2C 16B 24TSSOP NXP USA Inc.	443	$1.01			Tape & Reel (TR)	Obsolete	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
	PCA9554PW/DG,118 IC I/O EXPANDER I2C 8B 16TSSOP NXP USA Inc.	1,097	$0.75			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
	PCA9534APW IC I/O EXPANDER I2C 8B 16TSSOP Texas Instruments	254	$0.00			Bulk	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
	PCA9534PWRG4 IC I/O EXPANDER I2C 8B 16TSSOP Texas Instruments	585	$0.00			Tape & Reel (TR)	Discontinued at Digi-Key	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
	PCA9536DGKRG4 IC I/O EXPANDER I2C 4B 8VSSOP Texas Instruments	353	$0.00			Tape & Reel (TR)	Discontinued at Digi-Key	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
	PCA9536DRG4 IC I/O EXPANDER I2C 4B 8SOIC Texas Instruments	152	$0.00			Tape & Reel (TR)	Discontinued at Digi-Key	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
	PCA9539PWE4 IC I/O EXPANDER I2C 16B 24TSSOP Texas Instruments	222	$0.00			Tube	Obsolete	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
	PCA9539PWRE4 IC I/O EXPANDER I2C 16B 24TSSOP Texas Instruments	369	$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
	PCA9554APWG4 IC I/O EXPANDER I2C 8B 16TSSOP Texas Instruments	127	$0.00			Tube	Discontinued at Digi-Key	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
	PCA9554APWRG4 IC I/O EXPANDER I2C 8B 16TSSOP Texas Instruments	212	$0.00			Tape & Reel (TR)	Discontinued at Digi-Key	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
	PCA9554PWG4 IC I/O EXPANDER I2C 8B 16TSSOP Texas Instruments	399	$0.00			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
	PCA9554PWRG4 IC I/O EXPANDER I2C 8B 16TSSOP Texas Instruments	186	$0.00			Tape & Reel (TR)	Discontinued at Digi-Key	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
	PCA9555PWRE4 IC I/O EXPANDER I2C 16B 24TSSOP Texas Instruments	452	$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
	PCF8574ADWE4 IC I/O EXPANDER I2C 8B 16SOIC Texas Instruments	223	$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	16-SOIC (0.295", 7.50mm Width)	16-SOIC
	PCF8574ADWG4 IC I/O EXPANDER I2C 8B 16SOIC Texas Instruments	85	$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	16-SOIC (0.295", 7.50mm Width)	16-SOIC
	PCF8574ADWRE4 IC I/O EXPANDER I2C 8B 16SOIC Texas Instruments	124	$0.00			Tape & Reel (TR)	Obsolete	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
	PCF8574ADWRG4 IC I/O EXPANDER I2C 8B 16SOIC Texas Instruments	310	$0.00			Tape & Reel (TR)	Obsolete	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
	PCF8574ANG4 IC I/O EXPANDER I2C 8B 16DIP Texas Instruments	479	$0.00			Tube	Discontinued at Digi-Key	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
	PCF8574APWG4 IC I/O EXPANDER I2C 8B 20TSSOP Texas Instruments	237	$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