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
	PCF8574ADWE4 IC I/O EXPANDER I2C 8B 16SOIC Texas Instruments	176	$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	195	$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	233	$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	196	$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	333	$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	278	$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
	PCF8574APWRE4 IC I/O EXPANDER I2C 8B 20TSSOP Texas Instruments	394	$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	20-TSSOP (0.173", 4.40mm Width)	20-TSSOP
	PCF8574APWRG4 IC I/O EXPANDER I2C 8B 20TSSOP Texas Instruments	109	$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	20-TSSOP (0.173", 4.40mm Width)	20-TSSOP
	PCF8574ARGYRG4 IC I/O EXPANDER I2C 8B 20VQFN Texas Instruments	228	$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	20-VFQFN Exposed Pad	20-VQFN (3.5x4.5)
	PCF8574DWE4 IC I/O EXPANDER I2C 8B 16SOIC Texas Instruments	272	$0.00			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
	PCF8574DWRE4 IC I/O EXPANDER I2C 8B 16SOIC Texas Instruments	36	$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
	PCF8574NG4 IC I/O EXPANDER I2C 8B 16DIP Texas Instruments	554	$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
	PCF8575CDWE4 IC I/O EXPANDER I2C 16B 24SOIC Texas Instruments	514	$0.00			Tube	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
	PCF8575DBQRG4 IC I/O EXPANDER I2C 16B 24QSOP Texas Instruments	492	$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-SSOP (0.154", 3.90mm Width)	24-SSOP
	PCF8575PWE4 IC I/O EXPANDER I2C 16B 24TSSOP Texas Instruments	440	$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
	PCF8575PWRE4 IC I/O EXPANDER I2C 16B 24TSSOP Texas Instruments	240	$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-TSSOP (0.173", 4.40mm Width)	24-TSSOP
	PCA9534PW IC I/O EXPANDER I2C 8B 16TSSOP Texas Instruments	520	$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
	PCA9554PW IC I/O EXPANDER I2C 8B 16TSSOP Texas Instruments	479	$1.45			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
	TCA6408PWR IC I/O EXPANDER I2C 8B 16TSSOP Texas Instruments	532	$0.00			Tape & Reel (TR)	Obsolete	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
	TCA6408RGTR IC I/O EXPANDER I2C 8B 16QFN Texas Instruments	97	$0.00			Tape & Reel (TR)	Obsolete	8	I²C, SMBus	Yes	POR	Push-Pull	10mA, 25mA	400 kHz	1.65V ~ 5.5V	-40°C ~ 85°C	Surface Mount	16-VFQFN Exposed Pad	16-VQFN (3x3)