Interface - I/O Expanders

	Mfr Part #	Quantity Available	Price	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
	MCP23S17-E/SS IC I/O EXPANDER SPI 16B 28SSOP Microchip Technology	2026 In Stock	1.79000	Active	16	SPI	Yes	POR	Push-Pull	25mA	10 MHz	1.8V ~ 5.5V	-40°C ~ 125°C	Surface Mount	28-SSOP (0.209", 5.30mm Width)	28-SSOP
	MAX7311ATG+T IC I/O EXPANDER I2C 16B 24TQFN Analog Devices Inc./Maxim Integrated	9945 In Stock	4.08000	Active	16	I²C, SMBus	Yes	POR	Push-Pull	31mA, 43mA	400 kHz	2V ~ 5.5V	-40°C ~ 125°C	Surface Mount	24-WFQFN Exposed Pad	24-TQFN (4x4)
	PCA9539RPW,118 IC I/O EXPANDER I2C 16B 24TSSOP NXP USA Inc.	3143 In Stock	2.54380	Active	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
	PCA9539DBR IC I/O EXPANDER I2C 16B 24SSOP Texas Instruments	9373 In Stock	1.21440	Active	16	I²C, SMBus	Yes	POR	Push-Pull	10mA, 25mA	400 kHz	2.3V ~ 5.5V	-40°C ~ 85°C	Surface Mount	24-SSOP (0.209", 5.30mm Width)	24-SSOP
	PCA9555RGER IC I/O EXPANDER I2C 16B 24VQFN Texas Instruments	6795 In Stock	2.52000	Active	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)
	MCP23009T-E/SS IC I/O EXPANDER I2C 8B 20SSOP Microchip Technology	6154 In Stock	1.63000	Active	8	I²C	Yes	POR	Open Drain	25mA	3.4 MHz	1.8V ~ 5.5V	-40°C ~ 125°C	Surface Mount	20-SSOP (0.209", 5.30mm Width)	20-SSOP
	PI4IOE5V9554ALEX IC I/O EXPANDER 8-BIT 16TSSOP Diodes Incorporated	19868 In Stock	1.36000	Active	8	I²C	Yes	-	-	-	400 kHz	2.3V ~ 5.5V	-40°C ~ 85°C	Surface Mount	16-TSSOP (0.173", 4.40mm Width)	16-TSSOP
	PCA9673D,118 IC I/O EXPANDER I2C 16B 24SOIC NXP USA Inc.	1581 In Stock	1.09000	Obsolete	16	I²C	Yes	POR	Push-Pull	100µA, 25mA	1 MHz	2.3V ~ 5.5V	-40°C ~ 85°C	Surface Mount	24-SOIC (0.295", 7.50mm Width)	24-SO
	PCA9557RGYR IC I/O EXPANDER I2C 8B 16QFN Texas Instruments	126866 In Stock	0.75000	Active	8	I²C, SMBus	No	POR	Open Drain, Push-Pull	10mA, 25mA	400 kHz	2.3V ~ 5.5V	-40°C ~ 85°C	Surface Mount	16-VFQFN Exposed Pad	16-VQFN (4x3.5)
	PCA9539RBS,118 IC I/O EXPANDER I2C 16B 24HVQFN NXP USA Inc.	3223 In Stock	2.87000	Last Time Buy	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-HVQFN (4x4)
	CAT9534YI-GT2 IC I/O EXPANDER I2C 8B 16TSSOP onsemi	19873 In Stock	1.13000	Obsolete	8	I²C, SMBus	Yes	POR	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
	PCF8575DGVR IC I/O EXPANDER I2C 16B 24TVSOP Texas Instruments	5290 In Stock	1.51000	Active	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
	PCA9701HF118 IC SPI GPI 16BIT 24HWQFN NXP USA Inc.	3812 In Stock	0.78000	Active	16 (Input Only)	SPI Serial	Yes	-	Push-Pull	-	5 MHz	2.5V ~ 5.5V	-40°C ~ 125°C	Surface Mount	24-WFQFN Exposed Pad	24-HWQFN (4x4)
	PCA9534DWR IC I/O EXPANDER I2C 8B 16SOIC Texas Instruments	8182 In Stock	2.09000	Active	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
	TCA9555DBR IC I/O EXPANDER 16B 24SSOP Texas Instruments	1712 In Stock	2.05000	Active	16	I²C, SMBus	Yes	POR	Push-Pull	10mA, 25mA	400 kHz	1.65V ~ 5.5V	-40°C ~ 85°C	Surface Mount	24-SSOP (0.209", 5.30mm Width)	24-SSOP
	MR8251A/B PARALLEL I/O PORT, 0 I/O, CMOS Rochester Electronics, LLC	958 In Stock	105.62000	Active	-	-	-	-	-	-	-	-	-	-	-	-
	PCA9698DGG,512 IC I/O EXPANDER I2C 40B 56TSSOP NXP USA Inc.	2135 In Stock	6.41000	Active	40	I²C	Yes	POR	Open Drain	10mA, 25mA	1 MHz	2.3V ~ 5.5V	-40°C ~ 85°C	Surface Mount	56-TFSOP (0.240", 6.10mm Width)	56-TSSOP
	PCA9554DWR IC I/O EXPANDER I2C 8B 16SOIC Texas Instruments	1698 In Stock	1.07000	Active	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
	PCF8574PWR IC I/O EXPANDER I2C 8B 20TSSOP Texas Instruments	7772 In Stock	1.95000	Active	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
	PI4IOE5V9538LEX IC I/O EXPANDER 8-BIT 16TSSOP Diodes Incorporated	8254 In Stock	0.58500	Active	8	SMBus	Yes	POR	Open Drain	-	400 kHz	2.3V ~ 5.5V	-	Surface Mount	16-TSSOP (0.173", 4.40mm Width)	16-TSSOP
	PCA9698DGG,518 IC I/O EXPANDER I2C 40B 56TSSOP NXP USA Inc.	3432 In Stock	6.41000	Active	40	I²C	Yes	POR	Open Drain	10mA, 25mA	1 MHz	2.3V ~ 5.5V	-40°C ~ 85°C	Surface Mount	56-TFSOP (0.240", 6.10mm Width)	56-TSSOP
	PCA9534DW IC I/O EXPANDER I2C 8B 16SOIC Texas Instruments	440 In Stock	2.51000	Active	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
	MAX7300ATL+T IC I/O EXPANDER 2WIRE 40TQFN Analog Devices Inc./Maxim Integrated	6949 In Stock	11.90000	Active	28	I²C	Yes	-	Push-Pull	4.5mA, 10mA	400 kHz	2.5V ~ 5.5V	-40°C ~ 125°C	Surface Mount	40-WFQFN Exposed Pad	40-TQFN (6x6)
	PCF8574T/3,512 IC I/O EXPANDER I2C 8B 16SOIC NXP USA Inc.	9903 In Stock	1.86000	Active	8	I²C	Yes	POR	Push-Pull	300µA, 25mA	100 kHz	2.5V ~ 6V	-40°C ~ 85°C	Surface Mount	16-SOIC (0.295", 7.50mm Width)	16-SO