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
	PCF8575CTS/1,118 IC I/O EXPANDER I2C 16B 24SSOP NXP USA Inc.	97	$3.06			Tape & Reel (TR)	Active	16	I²C	Yes	POR	Push-Pull	25mA	400 kHz	4.5V ~ 5.5V	-40°C ~ 85°C	Surface Mount	24-SSOP (0.209", 5.30mm Width)	24-SSOP
	TCA6416PWR IC I/O EXPANDER I2C 16B 24TSSOP Texas Instruments	127	$3.26			Tape & Reel (TR)	Not For New Designs	16	I²C, SMBus	Yes	POR	Push-Pull	10mA, 25mA	400 kHz	1.65V ~ 5.5V	-40°C ~ 85°C	Surface Mount	24-TSSOP (0.173", 4.40mm Width)	24-TSSOP
	ADP5587ACPZ-1-R7 IC I/O EXPANDER/KEYBRD CTRLR Analog Devices Inc.	49	$3.31			Tape & Reel (TR)	Active	18	I²C	Yes	Keypad Controller, POR	Open Drain	-	400 kHz	1.65V ~ 3.6V	-40°C ~ 85°C	Surface Mount	24-WFQFN Exposed Pad, CSP	24-LFCSP-WQ (4x4)
	PCF8575CPW IC I/O EXPANDER I2C 16B 24TSSOP Texas Instruments	82	$3.69			Tube	Active	16	I²C, SMBus	Yes	POR	Open Drain	10mA, 25mA	400 kHz	4.5V ~ 5.5V	-40°C ~ 85°C	Surface Mount	24-TSSOP (0.173", 4.40mm Width)	24-TSSOP
	PCA9704PW/Q900J IC GPI 8BIT SPI 18V INT 16TSSOP NXP USA Inc.	91	$4.20		Automotive, AEC-Q100	Tape & Reel (TR)	Active	8 (Input Only)	SPI	Yes	-	Open Drain	-	5 MHz	4.5V ~ 5.5V	-40°C ~ 125°C	Surface Mount	16-TSSOP (0.173", 4.40mm Width)	16-TSSOP
	MCP25050T-I/SL IC I/O EXPANDER CAN 8B 14SOIC Microchip Technology	110	$4.71			Tape & Reel (TR)	Active	8	CAN V2.0b	No	ADC, EEPROM, POR, PWM	Push-Pull	25mA	25 MHz	2.7V ~ 5.5V	-40°C ~ 85°C	Surface Mount	14-SOIC (0.154", 3.90mm Width)	14-SOIC
	CAT9554AWGI-T2 CAT9554 - 8-BIT I2C AND SMBUS I/ onsemi	1,718	$0.33		CAT9554	Bulk	Obsolete	8	I²C, SMBus	Yes	POR	Open Collector, Open Drain, Push-Pull	10mA, 24mA	400 kHz	2.3V ~ 5.5V	-40°C ~ 85°C	Surface Mount	16-SOIC (0.154", 3.90mm Width)	16-SOIC
	CAT9554AYGI CAT9554 - 8-BIT I2C AND SMBUS I/ onsemi	1,276	$0.34		CAT9554	Bulk	Obsolete	8	I²C, SMBus	Yes	POR	Open Collector, Open Drain, Push-Pull	10mA, 24mA	400 kHz	2.3V ~ 5.5V	-40°C ~ 85°C	Surface Mount	16-TSSOP (0.173", 4.40mm Width)	16-TSSOP
	CAT9554AYGI-T2 CAT9554 - 8-BIT I2C AND SMBUS I/ onsemi	34	$0.33		CAT9554	Bulk	Obsolete	8	I²C, SMBus	Yes	POR	Open Collector, Open Drain, Push-Pull	10mA, 24mA	400 kHz	2.3V ~ 5.5V	-40°C ~ 85°C	Surface Mount	16-TSSOP (0.173", 4.40mm Width)	16-TSSOP
	CAT9554YGI CAT9554 - 8-BIT I2C AND SMBUS I/ onsemi	727	$0.37		CAT9554	Bulk	Obsolete	8	I²C, SMBus	Yes	POR	Open Collector, Open Drain, Push-Pull	10mA, 24mA	400 kHz	2.3V ~ 5.5V	-40°C ~ 85°C	Surface Mount	16-TSSOP (0.173", 4.40mm Width)	16-TSSOP
	PCA9539D,118 I/O EXPANDER 16 IC, SMBUS 400KHZ NXP USA Inc.	74	$0.84			Bulk	Obsolete	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
	PCA9539D,112 I/O EXPANDER 16 IC, SMBUS 400KHZ NXP USA Inc.	864	$0.86			Bulk	Obsolete	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
	CAT9534WI-G PARALLEL I/O PORT, 8-BIT, 8 I/O, onsemi	581	$1.18			Bulk	Active	-	-	-	-	-	-	-	-	-	-	-	-
	PCA9556PW,118 I/O EXPANDER 8 IC, SMBUS 100KHZ NXP USA Inc.	355	$1.24			Bulk	Obsolete	8	I²C, SMBus	Yes	POR	Open Drain, Push-Pull	10mA, 20mA	100 kHz	3V ~ 5.5V	-40°C ~ 85°C	Surface Mount	16-TSSOP (0.173", 4.40mm Width)	16-TSSOP
	PCA9501D,118 PARALLEL I/O PORT, 8-BIT, 8 I/O, NXP USA Inc.	209	$1.33			Tape & Reel (TR)	Obsolete	8	I²C, SMBus	Yes	EEPROM, POR	Push-Pull	100µA, 25mA	400 kHz	2.5V ~ 3.6V	-40°C ~ 85°C	Surface Mount	20-SOIC (0.295", 7.50mm Width)	20-SO
	PCA9670D,518 PARALLEL I/O PORT, 8-BIT, 8 I/O, NXP USA Inc.	167	$1.47			Tape & Reel (TR)	Obsolete	8	I²C	No	POR	Push-Pull	100µA, 25mA	1 MHz	2.3V ~ 5.5V	-40°C ~ 85°C	Surface Mount	16-SOIC (0.295", 7.50mm Width)	16-SO
	PCA9670D,512 IC I/O EXPANDER I2C 8B 16SOIC NXP USA Inc.	77	$1.46			Bulk	Obsolete	8	I²C	No	POR	Push-Pull	100µA, 25mA	1 MHz	2.3V ~ 5.5V	-40°C ~ 85°C	Surface Mount	16-SOIC (0.295", 7.50mm Width)	16-SO
	LC709004AMJ-AH IO EXPANDER16I/O TAPING onsemi	621	$1.50			Bulk	Active	-	-	-	-	-	-	-	-	-	-	-	-
	P8155H P8155H - PARALLEL I/O PORT, 22 I Rochester Electronics, LLC	54	$12.40			Bulk	Active	-	-	-	-	-	-	-	-	-	-	-	-
	CP82C55A IC 24 4.5V - 5.5V 40-DIP Renesas	6	$64.96			Tube	Obsolete	24	-	Yes	ADC, DAC, Direct Bit Set/Reset	-	2.5mA	-	4.5V ~ 5.5V	0°C ~ 70°C	Through Hole	40-DIP (0.600", 15.24mm)	40-PDIP