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Interface - I/O Expanders

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Image	Part #	Mfr.	Description	Datasheet	Availability	Pricing (CAD) Filter the results in the table by unit price based on your quantity.	Qty.	Series	Mounting Style	Package / Case	Interface Type	Number of I/Os	Interrupt Output	Supply Voltage - Min	Supply Voltage - Max	Maximum Clock Frequency	Minimum Operating Temperature	Maximum Operating Temperature	Qualification	Packaging	ESD Protection
Interface - I/O Expanders Automotive 16-bit lo w voltage I C/SMBus TCAL9539RTWRQ1 Texas Instruments 1: $5.24 10,235In Stock	Mfr. Part # TCAL9539RTWRQ1 Mouser Part # 595-TCAL9539RTWRQ1	Texas Instruments	Interface - I/O Expanders Automotive 16-bit lo w voltage I C/SMBus Learn More about Texas Instruments ti tcal9539r i2c bus smbus io expander	Datasheet	10,235In Stock	Cut Tape $5.24 $3.90 $3.57 $3.20 View Reel $2.66 $3.02 $2.95 $2.81 $2.72 $2.66 MouseReel Available	Min.: 1 Mult.: 1 : 5,000	TCAL9539	SMD/SMT	WQFN-24	I2C, Serial	16 I/O	With Interrupt	1.08 V	3.6 V	1 MHz	- 40 C	+ 125 C	AEC-Q100	Reel, Cut Tape, MouseReel
Interface - I/O Expanders Automotive 16-bit 1. 65 to 3.6V I2C/SMBu TCA9539BQPWRQ1 Texas Instruments 1: $3.51 2,053In Stock New Product	Mfr. Part # TCA9539BQPWRQ1 Mouser Part # 595-TCA9539BQPWRQ1 New Product	Texas Instruments	Interface - I/O Expanders Automotive 16-bit 1. 65 to 3.6V I2C/SMBu Learn More about Texas Instruments ti tca9539x q1 i2c smbus io expander	Datasheet	2,053In Stock	$3.51 $2.61 $2.39 $2.13 View $2.02 $1.96 $1.93	Min.: 1 Mult.: 1 Max.: 1,001		SMD/SMT	TSSOP-24	I2C	17 I/O	With Interrupt	1.65 V	5.5 V	400 kHz	- 40 C	+ 125 C
Interface - I/O Expanders 16-bit translating I C-bus/SMBus I/O exp TCAL6416DGSR Texas Instruments 1: $3.01 6,601In Stock New Product	Mfr. Part # TCAL6416DGSR Mouser Part # 595-TCAL6416DGSR New Product	Texas Instruments	Interface - I/O Expanders 16-bit translating I C-bus/SMBus I/O exp Learn More about Texas Instruments ti tcal6416 expander	Datasheet	6,601In Stock	Cut Tape $3.01 $2.23 $2.03 $1.81 View Reel $1.61 $1.71 $1.66 $1.61 $1.61	Min.: 1 Mult.: 1 Max.: 1,001 : 5,000	TCAL6416	SMD/SMT	VSSOP-24	I2C, Serial	16 I/O	With Interrupt	1.08 V	3.6 V	1 MHz	- 40 C	+ 125 C		Reel, Cut Tape	With ESD Protection
Interface - I/O Expanders 16-bit translating I C-bus/SMBus I/O exp TCAL6416RADTOR Texas Instruments 1: $3.90 3,619In Stock New Product	Mfr. Part # TCAL6416RADTOR Mouser Part # 595-TCAL6416RADTOR New Product	Texas Instruments	Interface - I/O Expanders 16-bit translating I C-bus/SMBus I/O exp Learn More about Texas Instruments ti tcal6416r i2c bus smbus io expander	Datasheet	3,619In Stock	Cut Tape $3.90 $2.91 $2.66 $2.39 View Reel $2.15 $2.26 $2.20 $2.15 $2.15 MouseReel Available	Min.: 1 Mult.: 1 Max.: 1,001 : 3,000	TCAL6416R	SMD/SMT	QFN-24	I2C	16 I/O	With Interrupt	1.08 V	3.6 V	1 MHz	- 40 C	+ 125 C		Reel, Cut Tape, MouseReel	4 kV
Interface - I/O Expanders 16-bit I2C/SMBus I/O expander with inter TCAL9539RPWR Texas Instruments 1: $2.97 1,897In Stock New Product	Mfr. Part # TCAL9539RPWR Mouser Part # 595-TCAL9539RPWR New Product	Texas Instruments	Interface - I/O Expanders 16-bit I2C/SMBus I/O expander with inter Learn More about Texas Instruments ti tcal9539r i2c bus smbus io expander	Datasheet	1,897In Stock	Cut Tape $2.97 $2.19 $2.00 $1.79 View Reel $1.58 $1.68 $1.63 $1.58 $1.58 MouseReel Available	Min.: 1 Mult.: 1 Max.: 1,001 : 3,000	TCAL9539R	SMD/SMT	TSSOP-24	I2C	16 I/O	With Interrupt	1.08 V	3.6 V	1 MHz	- 40 C	+ 125 C		Reel, Cut Tape, MouseReel	2 kV
Interface - I/O Expanders 16-bit SPI bus I/O e xpander with interr TXE8116DGSR Texas Instruments 1: $2.07 6,711In Stock 5,000Expected 2027-04-19 New Product	Mfr. Part # TXE8116DGSR Mouser Part # 595-TXE8116DGSR New Product	Texas Instruments	Interface - I/O Expanders 16-bit SPI bus I/O e xpander with interr Learn More about Texas Instruments ti txe8116 16 bit spi bus i o expander	Datasheet	6,711In Stock 5,000Expected 2027-04-19	Cut Tape $2.07 $1.50 $1.36 $1.21 View Reel $1.04 $1.13 $1.08 $1.04 $1.04 MouseReel Available	Min.: 1 Mult.: 1 Max.: 1,001 : 5,000	TXE8116	SMD/SMT	VSSOP-24	SPI	16 I/O	Without Interrupt	1.65 V	5.5 V	10 MHz	- 40 C	+ 124 C		Reel, Cut Tape, MouseReel	2 kV
Interface - I/O Expanders 22-bit SPI Level Translating I/O Expander with Agile I/O in HVQFN32 package PCAL9722HNMP NXP Semiconductors 1: $2.72 50,752In Stock	Mfr. Part # PCAL9722HNMP Mouser Part # 771-PCAL9722HNMP	NXP Semiconductors	Interface - I/O Expanders 22-bit SPI Level Translating I/O Expander with Agile I/O in HVQFN32 package Learn More about NXP Semiconductors nxp pcal9722 expanders	Datasheet	50,752In Stock	Cut Tape $2.72 $2.02 $1.83 $1.63 View Reel $1.35 $1.54 $1.48 $1.38 $1.35 MouseReel Available	Min.: 1 Mult.: 1 : 6,000	PCAL9722	SMD/SMT	HVQFN-32	I2C, Serial		With Interrupt	1.1 V	5.5 V	5 MHz	- 40 C	+ 85 C		Reel, Cut Tape, MouseReel	2 kV
Interface - I/O Expanders 22-bit SPI Level Translating I/O Expander with Agile I/O and AEC-Q100 Compliant in HVQFN32 package PCAL9722HN/Q900MP NXP Semiconductors 1: $3.25 45,457In Stock	Mfr. Part # PCAL9722HN/Q900MP Mouser Part # 771-PCAL9722HNQ900MP	NXP Semiconductors	Interface - I/O Expanders 22-bit SPI Level Translating I/O Expander with Agile I/O and AEC-Q100 Compliant in HVQFN32 package Learn More about NXP Semiconductors nxp pcal9722 expanders	Datasheet	45,457In Stock	Cut Tape $3.25 $2.40 $2.20 $1.96 View Reel $1.63 $1.86 $1.80 $1.63 MouseReel Available	Min.: 1 Mult.: 1 : 6,000	PCAL9722	SMD/SMT	HVQFN-32	Serial, SPI		With Interrupt	1.1 V	5.5 V	5 MHz	- 40 C	+ 125 C	AEC-Q100	Reel, Cut Tape, MouseReel	2 kV
Interface - I/O Expanders NCA9535BY-Q100/SOT8041/HWQFN24 NCA9535BY-Q100HP Nexperia 1: $2.40 6,421In Stock	Mfr. Part # NCA9535BY-Q100HP Mouser Part # 771-NCA9535BY-Q100HP	Nexperia	Interface - I/O Expanders NCA9535BY-Q100/SOT8041/HWQFN24 Learn More about Nexperia nca9535 nca9539 nca9555 gipo expanders	Datasheet	6,421In Stock	Cut Tape $2.40 $1.77 $1.61 $1.42 Reel $1.22 View $1.34 $1.29 $1.28 $1.19	Min.: 1 Mult.: 1 : 3,000		SMD/SMT	HWQFN-24										Reel, Cut Tape
Interface - I/O Expanders NCA9535BY/SOT8041/HWQFN24 NCA9535BYHP Nexperia 1: $2.10 3,000In Stock	Mfr. Part # NCA9535BYHP Mouser Part # 771-NCA9535BYHP	Nexperia	Interface - I/O Expanders NCA9535BY/SOT8041/HWQFN24	Datasheet	3,000In Stock	Cut Tape $2.10 $1.54 $1.39 $1.24 Reel $1.03 View $1.16 $1.12 $1.10 $1.01	Min.: 1 Mult.: 1 : 3,000		SMD/SMT	HWQFN-24										Reel, Cut Tape
Interface - I/O Expanders NCA9539BY-Q100/SOT8041/HWQFN24 NCA9539BY-Q100HP Nexperia 1: $2.82 1,841In Stock	Mfr. Part # NCA9539BY-Q100HP Mouser Part # 771-NCA9539BY-Q100HP	Nexperia	Interface - I/O Expanders NCA9539BY-Q100/SOT8041/HWQFN24	Datasheet	1,841In Stock	Cut Tape $2.82 $2.09 $1.90 $1.70 Reel $1.42 View $1.60 $1.54 $1.39 MouseReel Available	Min.: 1 Mult.: 1 : 3,000		SMD/SMT	HWQFN-24										Reel, Cut Tape, MouseReel
Interface - I/O Expanders NCA9555BY-Q100/SOT8041/HWQFN24 NCA9555BY-Q100HP Nexperia 1: $2.68 3,091In Stock	Mfr. Part # NCA9555BY-Q100HP Mouser Part # 771-NCA9555BY-Q100HP	Nexperia	Interface - I/O Expanders NCA9555BY-Q100/SOT8041/HWQFN24 Learn More about Nexperia nca9535 nca9539 nca9555 gipo expanders	Datasheet	3,091In Stock	Cut Tape $2.68 $1.97 $1.79 $1.60 Reel $1.33 View $1.50 $1.44 $1.43 $1.27 MouseReel Available	Min.: 1 Mult.: 1 : 3,000		SMD/SMT	HWQFN-24	I2C, Serial, SMBus	16 I/O	With Interrupt	1.65 V	5.5 V	100 kHz, 400 kHz	- 40 C	+ 125 C	AEC-Q100	Reel, Cut Tape, MouseReel
Interface - I/O Expanders NCA9555BY/SOT8041/HWQFN24 NCA9555BYHP Nexperia 1: $2.29 2,828In Stock	Mfr. Part # NCA9555BYHP Mouser Part # 771-NCA9555BYHP	Nexperia	Interface - I/O Expanders NCA9555BY/SOT8041/HWQFN24 Learn More about Nexperia nca9535 nca9539 nca9555 gipo expanders	Datasheet	2,828In Stock	Cut Tape $2.29 $1.68 $1.53 $1.35 Reel $1.13 View $1.27 $1.22 $1.21 $1.10 MouseReel Available	Min.: 1 Mult.: 1 : 3,000		SMD/SMT	HWQFN-24	I2C, Serial, SMBus	16 I/O	With Interrupt	1.65 V	5.5 V	100 kHz, 400 kHz	- 40 C	+ 85 C		Reel, Cut Tape, MouseReel
Interface - I/O Expanders In/Out I2C int MCP23008T-E/SO Microchip Technology 1: $1.97 27,272In Stock	Mfr. Part # MCP23008T-E/SO Mouser Part # 579-MCP23008T-E/SO	Microchip Technology	Interface - I/O Expanders In/Out I2C int	Datasheet	27,272In Stock	Cut Tape $1.97 $1.64 Reel $1.51 MouseReel Available	Min.: 1 Mult.: 1 : 1,100		SMD/SMT	SOIC-18	I2C, Serial	8 I/O	With Interrupt	1.8 V	5.5 V	1.7 MHz	- 40 C	+ 125 C		Reel, Cut Tape, MouseReel	Without ESD Protection
Interface - I/O Expanders 8B I/O Expander I2C interface MCP23009-E/MG Microchip Technology 1: $2.35 12,358In Stock	Mfr. Part # MCP23009-E/MG Mouser Part # 579-MCP23009-E/MG	Microchip Technology	Interface - I/O Expanders 8B I/O Expander I2C interface	Datasheet	12,358In Stock	$2.35 $1.96 $1.80	Min.: 1 Mult.: 1		SMD/SMT	QFN-16	I2C, Serial	8 I/O	With Interrupt	1.8 V	5.5 V	3.4 MHz	- 40 C	+ 125 C		Tube	4 kV
Interface - I/O Expanders In/Out SPI int MCP23S08-E/SO Microchip Technology 1: $2.22 22,942In Stock	Mfr. Part # MCP23S08-E/SO Mouser Part # 579-MCP23S08-E/SO	Microchip Technology	Interface - I/O Expanders In/Out SPI int	Datasheet	22,942In Stock	$2.22 $1.84 $1.83	Min.: 1 Mult.: 1		SMD/SMT	SOIC-18	Serial, SPI	8 I/O	With Interrupt	1.8 V	5.5 V	10 MHz	- 40 C	+ 125 C		Tube	Without ESD Protection
Interface - I/O Expanders In/Out SPI int MCP23S08T-E/SO Microchip Technology 1: $2.22 10,475In Stock	Mfr. Part # MCP23S08T-E/SO Mouser Part # 579-MCP23S08T-E/SO	Microchip Technology	Interface - I/O Expanders In/Out SPI int	Datasheet	10,475In Stock	Cut Tape $2.22 $2.19 Reel $1.83 MouseReel Available	Min.: 1 Mult.: 1 : 1,100		SMD/SMT	SOIC-18	Serial, SPI	8 I/O	With Interrupt	1.8 V	5.5 V	10 MHz	- 40 C	+ 125 C		Reel, Cut Tape, MouseReel	Without ESD Protection
Interface - I/O Expanders 16bit Input/Output Exp SPI interface MCP23S17-E/SO Microchip Technology 1: $2.43 32,503In Stock	Mfr. Part # MCP23S17-E/SO Mouser Part # 579-MCP23S17-E/SO	Microchip Technology	Interface - I/O Expanders 16bit Input/Output Exp SPI interface Learn More about Microchip Technology microchip mcp23x17 io expanders	Datasheet	32,503In Stock	$2.43 $2.02 $1.84	Min.: 1 Mult.: 1	MCP23S17	SMD/SMT	SOIC-28	Serial, SPI	16 I/O	With Interrupt	1.8 V	5.5 V	10 MHz	- 40 C	+ 125 C		Tube	4 kV
Interface - I/O Expanders 16bit Input/Output Exp SPI interface MCP23S17-E/SS Microchip Technology 1: $2.56 13,820In Stock	Mfr. Part # MCP23S17-E/SS Mouser Part # 579-MCP23S17-E/SS	Microchip Technology	Interface - I/O Expanders 16bit Input/Output Exp SPI interface Learn More about Microchip Technology microchip mcp23x17 io expanders	Datasheet	13,820In Stock	$2.56 $2.15 $1.94	Min.: 1 Mult.: 1	MCP23S17	SMD/SMT	SSOP-28	Serial, SPI	16 I/O	With Interrupt	1.8 V	5.5 V	10 MHz	- 40 C	+ 125 C		Tube	4 kV
Interface - I/O Expanders 16bit Input/Output Exp SPI interface MCP23S17T-E/ML Microchip Technology 1: $2.94 39,981In Stock	Mfr. Part # MCP23S17T-E/ML Mouser Part # 579-MCP23S17T-E/ML	Microchip Technology	Interface - I/O Expanders 16bit Input/Output Exp SPI interface Learn More about Microchip Technology microchip mcp23x17 io expanders	Datasheet	39,981In Stock	Cut Tape $2.94 $2.43 Reel $2.22 MouseReel Available	Min.: 1 Mult.: 1 : 1,600	MCP23S17	SMD/SMT	QFN-28	Serial, SPI	16 I/O	With Interrupt	4.5 V	5.5 V	10 MHz	- 40 C	+ 125 C		Reel, Cut Tape, MouseReel	4 kV
Interface - I/O Expanders 16bit Input/Output Exp SPI interface MCP23S17T-E/SS Microchip Technology 1: $2.56 13,782In Stock 23,100Expected 2026-11-02	Mfr. Part # MCP23S17T-E/SS Mouser Part # 579-MCP23S17T-E/SS	Microchip Technology	Interface - I/O Expanders 16bit Input/Output Exp SPI interface Learn More about Microchip Technology microchip mcp23x17 io expanders	Datasheet	13,782In Stock 23,100Expected 2026-11-02	Cut Tape $2.56 $2.15 Reel $1.94 MouseReel Available	Min.: 1 Mult.: 1 : 2,100	MCP23S17	SMD/SMT	SSOP-28	Serial, SPI	16 I/O	With Interrupt	1.8 V	5.5 V	10 MHz	- 40 C	+ 125 C		Reel, Cut Tape, MouseReel	4 kV
Interface - I/O Expanders 8bit I/O Expndr PCF8574N Texas Instruments 1: $4.35 10,315In Stock	Mfr. Part # PCF8574N Mouser Part # 595-PCF8574N	Texas Instruments	Interface - I/O Expanders 8bit I/O Expndr	Datasheet	10,315In Stock	$4.35 $3.24 $2.95 $2.64 View $2.49 $2.43 $2.32 $2.25 $2.20	Min.: 1 Mult.: 1	PCF8574	Through Hole	PDIP-16	I2C, Serial	8 I/O	With Interrupt	2.5 V	6 V	100 kHz	- 40 C	+ 85 C		Tube	1 kV
Interface - I/O Expanders 2-Wire-Interfaced 16-Bit I/O Port Expand MAX7311ATG+T Analog Devices / Maxim Integrated 1: $14.47 3,906In Stock	Mfr. Part # MAX7311ATG+T Mouser Part # 700-MAX7311ATGT	Analog Devices / Maxim Integrated	Interface - I/O Expanders 2-Wire-Interfaced 16-Bit I/O Port Expand	Datasheet	3,906In Stock	Cut Tape $14.47 $11.64 $10.89 $10.02 View Reel $9.00 $9.78 $9.72 $9.55 $9.00 MouseReel Available	Min.: 1 Mult.: 1 Max.: 3,124 : 2,500	MAX7311	SMD/SMT	TQFN-24	I2C, Serial, SMBus	16 I/O	With Interrupt	2.5 V	5.5 V	400 kHz	- 40 C	+ 125 C		Reel, Cut Tape, MouseReel	Without ESD Protection
Interface - I/O Expanders 2-Wire-Interfaced 16-Bit I/O Port Expand MAX7311AUG+T Analog Devices / Maxim Integrated 1: $18.55 2,325In Stock	Mfr. Part # MAX7311AUG+T Mouser Part # 700-MAX7311AUGT	Analog Devices / Maxim Integrated	Interface - I/O Expanders 2-Wire-Interfaced 16-Bit I/O Port Expand	Datasheet	2,325In Stock	Cut Tape $18.55 $14.53 $13.52 $12.43 View $12.30 $12.25 $12.25 MouseReel Available	Min.: 1 Mult.: 1 Max.: 1,860	MAX7311	SMD/SMT	TSSOP-24	I2C, Serial, SMBus	16 I/O	With Interrupt	2.5 V	5.5 V	400 kHz	- 40 C	+ 125 C		Reel, Cut Tape, MouseReel
Interface - I/O Expanders I C Port Expander with 8 Open-Drain I/Os MAX7321ATE+T Analog Devices / Maxim Integrated 1: $6.54 6,474In Stock	Mfr. Part # MAX7321ATE+T Mouser Part # 700-MAX7321ATET	Analog Devices / Maxim Integrated	Interface - I/O Expanders I C Port Expander with 8 Open-Drain I/Os	Datasheet	6,474In Stock	Cut Tape $6.54 $4.97 $4.58 $4.13 View Reel $3.59 $3.93 $3.69 $3.59 MouseReel Available	Min.: 1 Mult.: 1 Max.: 5,179 : 2,500	MAX7321	SMD/SMT	TQFN-16	I2C, Serial	8 I/O	With Interrupt	1.71 V	5.5 V	400 kHz	- 40 C	+ 125 C		Reel, Cut Tape, MouseReel	Without ESD Protection