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
	PCF8574APWRE4 IC I/O EXPANDER I2C 8B 20TSSOP Texas Instruments	110	$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	472	$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
	PCF8574DWE4 IC I/O EXPANDER I2C 8B 16SOIC Texas Instruments	278	$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	226	$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	515	$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	461	$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	447	$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	51	$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	461	$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	422	$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	201	$1.49			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
	PCA9674BS,118 IC I/O EXPANDER I2C 8B 16HVQFN NXP USA Inc.	567	$0.00			Tape & Reel (TR)	Obsolete	8	I²C	Yes	POR	Push-Pull	100µA, 25mA	1 MHz	2.3V ~ 5.5V	-40°C ~ 85°C	Surface Mount	16-VFQFN Exposed Pad	16-HVQFN (3x3)
	STMPE801QTR IC I/O EXPANDER I2C 8B 16QFN STMicroelectronics	21	$0.00		Xpander Logic™	Tape & Reel (TR)	Obsolete	8	I²C	Yes	POR	Push-Pull	-	400 kHz	1.65V ~ 3.6V	-40°C ~ 85°C	Surface Mount	16-UFQFN	16-QFN (2.6x1.8)
	PCA9534ARGTRG4 IC I/O EXPANDER I2C 8B 16VQFN 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-VFQFN Exposed Pad	16-VQFN (3x3)
	PCA9534DWG4 IC I/O EXPANDER I2C 8B 16SOIC Texas Instruments	554	$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-SOIC (0.295", 7.50mm Width)	16-SOIC
	PCA9534RGVRG4 IC I/O EXPANDER I2C 8B 16QFN Texas Instruments	374	$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-VQFN Exposed Pad	16-VQFN (4x4)
	PCA9535PWG4 IC I/O EXPANDER I2C 16B 24TSSOP Texas Instruments	237	$0.00			Tube	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
	PCA9535PWRG4 IC I/O EXPANDER I2C 16B 24TSSOP Texas Instruments	450	$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
	PCA9539PWG4 IC I/O EXPANDER I2C 16B 24TSSOP Texas Instruments	335	$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
	PCA9539PWRG4 IC I/O EXPANDER I2C 16B 24TSSOP Texas Instruments	429	$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