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Interface - I/O Expanders

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Image	Part #	Mfr.	Description	Datasheet	Availability	Pricing (USD) 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	Packaging	ESD Protection
Interface - I/O Expanders ULTRA LOW VOLTAGE AG ILE I/O EXPANDER TCAL9538RSVR Texas Instruments 1: $1.92 3,644In Stock 9,000Expected 05/04/2027	Mfr. Part No. TCAL9538RSVR Mouser Part No 595-TCAL9538RSVR	Texas Instruments	Interface - I/O Expanders ULTRA LOW VOLTAGE AG ILE I/O EXPANDER Learn More about Texas Instruments ti tcal9538 expanders	Datasheet	3,644In Stock 9,000Expected 05/04/2027	Cut Tape $1.92 $1.42 $1.29 $1.15 Reel $0.966 View $1.08 $1.04 $0.946 MouseReel Available	Min.: 1 Mult.: 1 : 3,000	TCAL9538	SMD/SMT	UQFN-16	I2C, Serial, SMBus	9 I/O	With Interrupt	1.08 V	3.6 V	1 MHz	- 40 C	+ 125 C	Reel, Cut Tape, MouseReel
Interface - I/O Expanders 16-bit low-voltage I C-bus and SMBus I/O TCAL9539PWR Texas Instruments 1: $2.46 3,417In Stock 6,000Expected 25/03/2027	Mfr. Part No. TCAL9539PWR Mouser Part No 595-TCAL9539PWR	Texas Instruments	Interface - I/O Expanders 16-bit low-voltage I C-bus and SMBus I/O Learn More about Texas Instruments ti tcal9539 i2c bus smbus io expander	Datasheet	3,417In Stock 6,000Expected 25/03/2027	Cut Tape $2.46 $1.82 $1.66 $1.48 Reel $1.27 View $1.40 $1.35 $1.30 $1.23 MouseReel Available	Min.: 1 Mult.: 1 : 3,000	TCAL9539	SMD/SMT	TSSOP-24	I2C, Serial	16 I/O	With Interrupt	1.08 V	3.6 V	1 MHz	- 40 C	+ 125 C	Reel, Cut Tape, MouseReel
Interface - I/O Expanders 16bit Input/Output Exp I2C interface MCP23017-E/ML Microchip Technology 1: $1.80 43,707In Stock	Mfr. Part No. MCP23017-E/ML Mouser Part No 579-MCP23017-E/ML	Microchip Technology	Interface - I/O Expanders 16bit Input/Output Exp I2C interface Learn More about Microchip Technology microchip mcp23x17 io expanders	Datasheet	43,707In Stock	$1.80 $1.73 $1.55 $1.44	Min.: 1 Mult.: 1	MCP23017	SMD/SMT	QFN-28	I2C, Serial	16 I/O	With Interrupt	1.8 V	5.5 V	1.7 MHz	- 40 C	+ 125 C	Tube	4 kV
Interface - I/O Expanders 16bit Input/Output Exp I2C interface MCP23017-E/SO Microchip Technology 1: $1.62 34,826In Stock	Mfr. Part No. MCP23017-E/SO Mouser Part No 579-MCP23017-E/SO	Microchip Technology	Interface - I/O Expanders 16bit Input/Output Exp I2C interface Learn More about Microchip Technology microchip mcp23x17 io expanders	Datasheet	34,826In Stock	$1.62 $1.35 $1.24	Min.: 1 Mult.: 1	MCP23017	SMD/SMT	SOIC-28	I2C, Serial	16 I/O	With Interrupt	1.8 V	5.5 V	1.7 MHz	- 40 C	+ 125 C	Tube	4 kV
Interface - I/O Expanders 16bit Input/Output Exp I2C interface MCP23017-E/SP Microchip Technology 1: $1.69 11,548In Stock	Mfr. Part No. MCP23017-E/SP Mouser Part No 579-MCP23017-E/SP	Microchip Technology	Interface - I/O Expanders 16bit Input/Output Exp I2C interface Learn More about Microchip Technology microchip mcp23x17 io expanders	Datasheet	11,548In Stock	$1.69 $1.40 $1.28	Min.: 1 Mult.: 1	MCP23017	Through Hole	SPDIP-28	I2C, Serial	16 I/O	With Interrupt	1.8 V	5.5 V	1.7 MHz	- 40 C	+ 125 C	Tube	4 kV
Interface - I/O Expanders 16bit Input/Output Exp I2C interface MCP23017-E/SS Microchip Technology 1: $1.69 21,729In Stock	Mfr. Part No. MCP23017-E/SS Mouser Part No 579-MCP23017-E/SS	Microchip Technology	Interface - I/O Expanders 16bit Input/Output Exp I2C interface Learn More about Microchip Technology microchip mcp23x17 io expanders	Datasheet	21,729In Stock	$1.69 $1.40 $1.28	Min.: 1 Mult.: 1	MCP23017	SMD/SMT	SSOP-28	I2C, Serial	16 I/O	With Interrupt	1.8 V	5.5 V	1.7 MHz	- 40 C	+ 125 C	Tube	4 kV
Interface - I/O Expanders 16bit Input/Output Exp I2C interface MCP23017T-E/ML Microchip Technology 1: $1.90 18,032In Stock	Mfr. Part No. MCP23017T-E/ML Mouser Part No 579-MCP23017T-E/ML	Microchip Technology	Interface - I/O Expanders 16bit Input/Output Exp I2C interface Learn More about Microchip Technology microchip mcp23x17 io expanders	Datasheet	18,032In Stock	Cut Tape $1.90 $1.59 Reel $1.44 MouseReel Available	Min.: 1 Mult.: 1 : 1,600	MCP23017	SMD/SMT	QFN-28	I2C, Serial	16 I/O	With Interrupt	1.8 V	5.5 V	1.7 MHz	- 40 C	+ 125 C	Reel, Cut Tape, MouseReel	4 kV
Interface - I/O Expanders 16bit Input/Output Exp I2C interface MCP23017T-E/SO Microchip Technology 1: $1.62 24,272In Stock	Mfr. Part No. MCP23017T-E/SO Mouser Part No 579-MCP23017T-E/SO	Microchip Technology	Interface - I/O Expanders 16bit Input/Output Exp I2C interface Learn More about Microchip Technology microchip mcp23x17 io expanders	Datasheet	24,272In Stock	Cut Tape $1.62 $1.35 Reel $1.24 MouseReel Available	Min.: 1 Mult.: 1 : 1,600	MCP23017	SMD/SMT	SOIC-28	I2C, Serial	16 I/O	With Interrupt	1.8 V	5.5 V	1.7 MHz	- 40 C	+ 125 C	Reel, Cut Tape, MouseReel	4 kV
Interface - I/O Expanders 16bit Input/Output Exp I2C interface MCP23017T-E/SS Microchip Technology 1: $1.69 53,172In Stock	Mfr. Part No. MCP23017T-E/SS Mouser Part No 579-MCP23017T-E/SS	Microchip Technology	Interface - I/O Expanders 16bit Input/Output Exp I2C interface Learn More about Microchip Technology microchip mcp23x17 io expanders	Datasheet	53,172In Stock	Cut Tape $1.69 $1.40 Reel $1.28 MouseReel Available	Min.: 1 Mult.: 1 : 2,100	MCP23017	SMD/SMT	SSOP-28	I2C, Serial	16 I/O	With Interrupt	1.8 V	5.5 V	1.7 MHz	- 40 C	+ 125 C	Reel, Cut Tape, MouseReel	4 kV
Interface - I/O Expanders 16-Bit I2C & SMBus L o-Pwr I/O Expander R 595-TCA9539PWR PCA9539PWR Texas Instruments 1: $4.48 7,391In Stock	Mfr. Part No. PCA9539PWR Mouser Part No 595-PCA9539PWR	Texas Instruments	Interface - I/O Expanders 16-Bit I2C & SMBus L o-Pwr I/O Expander R 595-TCA9539PWR	Datasheet	7,391In Stock	Cut Tape $4.48 $3.40 $3.13 $2.83 Reel $2.53 View $2.69 $2.60 $2.42 MouseReel Available	Min.: 1 Mult.: 1 : 2,000	PCA9539	SMD/SMT	TSSOP-24	I2C, Serial, SMBus	16 I/O	With Interrupt	2.3 V	5.5 V	400 kHz	- 40 C	+ 85 C	Reel, Cut Tape, MouseReel	2 kV
Interface - I/O Expanders Lo-Vltg 24B I2C and SMBus I/O Expander TCA6424ARGJR Texas Instruments 1: $3.21 36,559In Stock	Mfr. Part No. TCA6424ARGJR Mouser Part No 595-TCA6424ARGJR	Texas Instruments	Interface - I/O Expanders Lo-Vltg 24B I2C and SMBus I/O Expander	Datasheet	36,559In Stock	Cut Tape $3.21 $2.39 $2.19 $1.97 Reel $1.97 MouseReel Available	Min.: 1 Mult.: 1 Max.: 1,001 : 3,000	TCA6424A	SMD/SMT	UQFN-32	I2C, Serial, SMBus	24 I/O	With Interrupt	1.65 V	5.5 V	400 kHz	- 40 C	+ 85 C	Reel, Cut Tape, MouseReel	2 kV
Interface - I/O Expanders Rem 16B I2C & SMBus Low-Pwr I/O Expander TCA9539PWR Texas Instruments 1: $1.97 10,955In Stock	Mfr. Part No. TCA9539PWR Mouser Part No 595-TCA9539PWR	Texas Instruments	Interface - I/O Expanders Rem 16B I2C & SMBus Low-Pwr I/O Expander	Datasheet	10,955In Stock	Cut Tape $1.97 $1.44 $1.31 $1.17 Reel $0.99 View $1.10 $1.06 $1.05 $0.968 MouseReel Available	Min.: 1 Mult.: 1 : 2,000	TCA9539	SMD/SMT	TSSOP-24	I2C, Serial, SMBus	16 I/O	With Interrupt	1.65 V	5.5 V	400 kHz	- 40 C	+ 85 C	Reel, Cut Tape, MouseReel	2 kV
Interface - I/O Expanders Rem 16B I2C & SMBus Low-Pwr I/O Expander TCA9539RTWR Texas Instruments 1: $2.68 19,776In Stock	Mfr. Part No. TCA9539RTWR Mouser Part No 595-TCA9539RTWR	Texas Instruments	Interface - I/O Expanders Rem 16B I2C & SMBus Low-Pwr I/O Expander	Datasheet	19,776In Stock	Cut Tape $2.68 $2.00 $1.83 $1.64 View Reel $1.48 $1.55 $1.51 $1.48 $1.48 MouseReel Available	Min.: 1 Mult.: 1 Max.: 1,001 : 3,000	TCA9539	SMD/SMT	WQFN-24	I2C, Serial, SMBus	16 I/O	With Interrupt	1.65 V	5.5 V	400 kHz	- 40 C	+ 85 C	Reel, Cut Tape, MouseReel	2 kV
Interface - I/O Expanders Remote 16B I2C & SMB us I/O Expander TCA9555PWR Texas Instruments 1: $1.96 15,484In Stock	Mfr. Part No. TCA9555PWR Mouser Part No 595-TCA9555PWR	Texas Instruments	Interface - I/O Expanders Remote 16B I2C & SMB us I/O Expander Learn More about Texas Instruments ti tca9555 io expander	Datasheet	15,484In Stock	Cut Tape $1.96 $1.43 $1.30 $1.16 Reel $0.983 View $1.09 $1.05 $1.04 $0.961 MouseReel Available	Min.: 1 Mult.: 1 : 2,000	TCA9555	SMD/SMT	TSSOP-24	I2C, Serial, SMBus	16 I/O	With Interrupt	1.65 V	5.5 V	400 kHz	- 40 C	+ 85 C	Reel, Cut Tape, MouseReel	2 kV
Interface - I/O Expanders SDIO Port Expander TXS02612RTWR Texas Instruments 1: $1.78 17,894In Stock 27,000On Order	Mfr. Part No. TXS02612RTWR Mouser Part No 595-TXS02612RTWR	Texas Instruments	Interface - I/O Expanders SDIO Port Expander	Datasheet	17,894In Stock 27,000On Order On Order Ship Dates Mfr. No: TXS02612RTWR Stock: 17,894 Can Dispatch Immediately On Order: 3,000 Expected 21/12/2026 3,000 Expected 28/01/2027 21,000 Expected 20/05/2027 Factory Lead Time: 20 Weeks	Cut Tape $1.78 $1.31 $1.19 $1.05 Reel $0.878 View $0.986 $0.948 $0.94 $0.859 MouseReel Available	Min.: 1 Mult.: 1 : 3,000	TXS02612	SMD/SMT	WQFN-24	Parallel	4 I/O	Without Interrupt	1.1 V	3.6 V	60 MHz	- 40 C	+ 85 C	Reel, Cut Tape, MouseReel	2 kV
Interface - I/O Expanders ULTRA LOW VOLTAGE AG ILE I/O EXPANDER TCAL6408RSVR Texas Instruments 1: $1.58 191In Stock 21,000Expected 10/12/2026	Mfr. Part No. TCAL6408RSVR Mouser Part No 595-TCAL6408RSVR	Texas Instruments	Interface - I/O Expanders ULTRA LOW VOLTAGE AG ILE I/O EXPANDER Learn More about Texas Instruments ti tcal6408 i2c bus smbus io expander	Datasheet	191In Stock 21,000Expected 10/12/2026	Cut Tape $1.58 $1.15 $1.05 $0.924 Reel $0.751 View $0.868 $0.835 $0.825 $0.735 MouseReel Available	Min.: 1 Mult.: 1 : 3,000	TCAL6408	SMD/SMT	UQFN-16	I2C, Serial, SMBus	9 I/O	With Interrupt	1.08 V	3.6 V	1 MHz	- 40 C	+ 125 C	Reel, Cut Tape, MouseReel
Interface - I/O Expanders 8bit Input/Output Exp I2C interface MCP23008-E/ML Microchip Technology 1: $1.49 8,771In Stock	Mfr. Part No. MCP23008-E/ML Mouser Part No 579-MCP23008-E/ML	Microchip Technology	Interface - I/O Expanders 8bit Input/Output Exp I2C interface	Datasheet	8,771In Stock	$1.49 $1.25 $1.13	Min.: 1 Mult.: 1		SMD/SMT	QFN-20	I2C, Serial	8 I/O	With Interrupt	1.8 V	5.5 V	1.7 MHz	- 40 C	+ 125 C	Tube	Without ESD Protection
Interface - I/O Expanders In/Out I2C int MCP23008-E/P Microchip Technology 1: $1.54 2,958In Stock	Mfr. Part No. MCP23008-E/P Mouser Part No 579-MCP23008-E/P	Microchip Technology	Interface - I/O Expanders In/Out I2C int	Datasheet	2,958In Stock	$1.54 $1.28 $1.27	Min.: 1 Mult.: 1		Through Hole	PDIP-18	I2C, Serial	8 I/O	With Interrupt	1.8 V	5.5 V	1.7 MHz	- 40 C	+ 125 C	Tube	Without ESD Protection
Interface - I/O Expanders In/Out I2C int MCP23008-E/SO Microchip Technology 1: $1.37 6,440In Stock	Mfr. Part No. MCP23008-E/SO Mouser Part No 579-MCP23008-E/SO	Microchip Technology	Interface - I/O Expanders In/Out I2C int	Datasheet	6,440In Stock	$1.37 $1.14 $1.05	Min.: 1 Mult.: 1		SMD/SMT	SOIC-18	I2C, Serial	8 I/O	With Interrupt	1.8 V	5.5 V	1.7 MHz	- 40 C	+ 125 C	Tube	Without ESD Protection
Interface - I/O Expanders In/Out I2C int MCP23008-E/SS Microchip Technology 1: $1.49 8,613In Stock	Mfr. Part No. MCP23008-E/SS Mouser Part No 579-MCP23008-E/SS	Microchip Technology	Interface - I/O Expanders In/Out I2C int	Datasheet	8,613In Stock	$1.49 $1.25 $1.13	Min.: 1 Mult.: 1		SMD/SMT	SSOP-20	I2C, Serial	8 I/O	With Interrupt	1.8 V	5.5 V	1.7 MHz	- 40 C	+ 125 C	Tube	Without ESD Protection
Interface - I/O Expanders 8bit Input/Output Exp I2C interface MCP23008T-E/ML Microchip Technology 1: $1.49 10,395In Stock	Mfr. Part No. MCP23008T-E/ML Mouser Part No 579-MCP23008T-E/ML	Microchip Technology	Interface - I/O Expanders 8bit Input/Output Exp I2C interface	Datasheet	10,395In Stock	Cut Tape $1.49 $1.25 Reel $1.13 MouseReel Available	Min.: 1 Mult.: 1 : 3,300		SMD/SMT	QFN-20	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 In/Out I2C int MCP23008T-E/SS Microchip Technology 1: $1.49 11,843In Stock	Mfr. Part No. MCP23008T-E/SS Mouser Part No 579-MCP23008T-E/SS	Microchip Technology	Interface - I/O Expanders In/Out I2C int	Datasheet	11,843In Stock	Cut Tape $1.49 $1.25 Reel $1.13 MouseReel Available	Min.: 1 Mult.: 1 : 1,600		SMD/SMT	SSOP-20	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 SPI interface MCP23009T-E/MG Microchip Technology 1: $1.63 1,997In Stock	Mfr. Part No. MCP23009T-E/MG Mouser Part No 579-MCP23009T-E/MG	Microchip Technology	Interface - I/O Expanders 8B I/O Expander SPI interface	Datasheet	1,997In Stock	Cut Tape $1.63 $1.36 $1.34 $1.33 $1.32 Reel $1.28 MouseReel Available	Min.: 1 Mult.: 1 : 3,300		SMD/SMT	QFN-16	I2C, Serial	8 I/O	With Interrupt	1.8 V	5.5 V	3.4 MHz	- 40 C	+ 125 C	Reel, Cut Tape, MouseReel	4 kV
Interface - I/O Expanders 8-bit I/O Expander I2C interface MCP23009T-E/SS Microchip Technology 1: $1.63 2,097In Stock	Mfr. Part No. MCP23009T-E/SS Mouser Part No 579-MCP23009T-E/SS	Microchip Technology	Interface - I/O Expanders 8-bit I/O Expander I2C interface	Datasheet	2,097In Stock	Cut Tape $1.63 $1.37 Reel $1.22 MouseReel Available	Min.: 1 Mult.: 1 : 1,600		SMD/SMT	SSOP-20	I2C, Serial	8 I/O	With Interrupt	1.8 V	5.5 V	3.4 MHz	- 40 C	+ 125 C	Reel, Cut Tape, MouseReel	4 kV
Interface - I/O Expanders 16B I/O Expander I2C interface MCP23018-E/MJ Microchip Technology 1: $2.04 2,883In Stock	Mfr. Part No. MCP23018-E/MJ Mouser Part No 579-MCP23018-E/MJ	Microchip Technology	Interface - I/O Expanders 16B I/O Expander I2C interface	Datasheet	2,883In Stock	$2.04 $1.69 $1.54	Min.: 1 Mult.: 1		SMD/SMT	QFN-24	I2C, Serial	16 I/O	With Interrupt	1.8 V	5.5 V	3.4 MHz	- 40 C	+ 125 C	Tube	Without ESD Protection