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Interface - I/O Expanders

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Image	Part #	Mfr.	Description	Datasheet	Availability	Pricing (GBP) 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 Remote 8-Bit I/O Exp ander for I2C-Bus PCF8574ARGYR Texas Instruments 1: £1.92 879In Stock	Mfr. Part No. PCF8574ARGYR Mouser Part No 595-PCF8574ARGYR	Texas Instruments	Interface - I/O Expanders Remote 8-Bit I/O Exp ander for I2C-Bus	Datasheet	879In Stock	Cut Tape £1.92 £1.43 £1.32 £1.17 Reel £0.986 View £1.11 £1.10 £0.96 MouseReel Available	Min.: 1 Mult.: 1 : 3,000	PCF8574A	SMD/SMT	VQFN-20	I2C, Serial	8 I/O	With Interrupt	2.5 V	6 V	100 kHz	- 40 C	+ 85 C		Reel, Cut Tape, MouseReel	1 kV
Interface - I/O Expanders Remote 16-Bit I2C & SMBus I/O Expander A A 595-PCF8575CDWR PCF8575CDW Texas Instruments 1: £5.83 188In Stock	Mfr. Part No. PCF8575CDW Mouser Part No 595-PCF8575CDW	Texas Instruments	Interface - I/O Expanders Remote 16-Bit I2C & SMBus I/O Expander A A 595-PCF8575CDWR	Datasheet	188In Stock	£5.83 £4.50 £4.16 £3.79 View £3.51 £3.40 £3.24	Min.: 1 Mult.: 1	PCF8575C	SMD/SMT	SOIC-24	I2C, Serial, SMBus	16 I/O	With Interrupt	4.5 V	5.5 V	400 kHz	- 40 C	+ 85 C		Tube	2 kV
Interface - I/O Expanders Remote 16-Bit I2C & SMBus I/O Expander A A 595-PCF8575CPW PCF8575CPWR Texas Instruments 1: £3.61 94In Stock	Mfr. Part No. PCF8575CPWR Mouser Part No 595-PCF8575CPWR	Texas Instruments	Interface - I/O Expanders Remote 16-Bit I2C & SMBus I/O Expander A A 595-PCF8575CPW	Datasheet	94In Stock	Cut Tape £3.61 £3.59 £3.31 £3.07 View Reel £2.71 £2.93 £2.88 £2.87 £2.71 MouseReel Available	Min.: 1 Mult.: 1 : 2,000	PCF8575C	SMD/SMT	TSSOP-24	I2C, Serial, SMBus	16 I/O	With Interrupt	4.5 V	5.5 V	400 kHz	- 40 C	+ 85 C		Reel, Cut Tape, MouseReel	2 kV
Interface - I/O Expanders Expandable 5-Ch I2C Hub A 595-PCA9518DWT A 595-PCA9518DWT PCA9518DW Texas Instruments 1: £3.85 129In Stock	Mfr. Part No. PCA9518DW Mouser Part No 595-PCA9518DW	Texas Instruments	Interface - I/O Expanders Expandable 5-Ch I2C Hub A 595-PCA9518DWT A 595-PCA9518DWT	Datasheet	129In Stock	£3.85 £2.93 £2.70 £2.44 View £2.33 £2.24 £2.23	Min.: 1 Mult.: 1	PCA9518	SMD/SMT	SOIC-20	I2C, Serial	5 I/O	Without Interrupt	3 V	3.6 V	400 kHz	- 40 C	+ 85 C		Tube	2 kV
Interface - I/O Expanders Remote 8B I2C and Lo -Pwr I/O Expander PCA9534ARGTR Texas Instruments 1: £1.75 119In Stock 18,000Expected 07/01/2027	Mfr. Part No. PCA9534ARGTR Mouser Part No 595-PCA9534ARGTR	Texas Instruments	Interface - I/O Expanders Remote 8B I2C and Lo -Pwr I/O Expander	Datasheet	119In Stock 18,000Expected 07/01/2027	Cut Tape £1.75 £1.30 £1.19 £1.07 Reel £0.925 View £1.00 £0.978 £0.952 £0.899 MouseReel Available	Min.: 1 Mult.: 1 : 3,000	PCA9534A	SMD/SMT	VQFN-16	I2C, Serial, SMBus	8 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 Remote 8B I2C & Lo- Pwr I/O Expander PCA9534DGVR Texas Instruments 1: £3.40 205In Stock	Mfr. Part No. PCA9534DGVR Mouser Part No 595-PCA9534DGVR	Texas Instruments	Interface - I/O Expanders Remote 8B I2C & Lo- Pwr I/O Expander	Datasheet	205In Stock	Cut Tape £3.40 £2.56 £2.35 £2.12 View Reel £1.83 £2.01 £2.00 £1.88 £1.83 MouseReel Available	Min.: 1 Mult.: 1 : 2,000	PCA9534	SMD/SMT	TVSOP-16	I2C, Serial, SMBus	8 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 Remote 8B I2C & Lo- Pwr I/O Expander A 5 A 595-PCA9534PW PCA9534PWR Texas Instruments 1: £1.32 554In Stock 6,000Expected 01/02/2027	Mfr. Part No. PCA9534PWR Mouser Part No 595-PCA9534PWR	Texas Instruments	Interface - I/O Expanders Remote 8B I2C & Lo- Pwr I/O Expander A 5 A 595-PCA9534PW	Datasheet	554In Stock 6,000Expected 01/02/2027	Cut Tape £1.32 £0.96 £0.882 £0.78 View Reel £0.701 £0.732 £0.705 £0.701 £0.701 MouseReel Available	Min.: 1 Mult.: 1 Max.: 1,001 : 2,000	PCA9534	SMD/SMT	TSSOP-16	I2C, Serial, SMBus	8 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 16-Bit I2C & SMBus L o-Pwr I/O Expander PCA9535DGVR Texas Instruments 1: £2.33 328In Stock 2,000Expected 01/02/2027	Mfr. Part No. PCA9535DGVR Mouser Part No 595-PCA9535DGVR	Texas Instruments	Interface - I/O Expanders 16-Bit I2C & SMBus L o-Pwr I/O Expander	Datasheet	328In Stock 2,000Expected 01/02/2027	Cut Tape £2.33 £2.27 £2.05 £1.98 £1.87 Reel £1.80 MouseReel Available	Min.: 1 Mult.: 1 : 2,000	PCA9535	SMD/SMT	TVSOP-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 Rem 8B I2C & SMBus L o-Pwr I/O Expander A 595-PCA9538DWR PCA9538DW Texas Instruments 1: £3.40 14In Stock 640Expected 06/10/2026	Mfr. Part No. PCA9538DW Mouser Part No 595-PCA9538DW	Texas Instruments	Interface - I/O Expanders Rem 8B I2C & SMBus L o-Pwr I/O Expander A 595-PCA9538DWR	Datasheet	14In Stock 640Expected 06/10/2026	£3.40 £2.56 £2.36 £2.12 View £2.01 £1.95 £1.89 £1.87	Min.: 1 Mult.: 1	PCA9538	SMD/SMT	SOIC-16	I2C, Serial, SMBus	8 I/O	With Interrupt	2.3 V	5.5 V	400 kHz	- 40 C	+ 85 C		Tube	2 kV
Interface - I/O Expanders Rem 8B I2C & SMBus L o-Pwr I/O Expander A 595-PCA9538PW PCA9538PWR Texas Instruments 1: £1.57 54In Stock 8,000Expected 16/11/2026	Mfr. Part No. PCA9538PWR Mouser Part No 595-PCA9538PWR	Texas Instruments	Interface - I/O Expanders Rem 8B I2C & SMBus L o-Pwr I/O Expander A 595-PCA9538PW	Datasheet	54In Stock 8,000Expected 16/11/2026	Cut Tape £1.57 £1.15 £1.05 £0.943 Reel £0.803 View £0.882 £0.856 £0.811 £0.773 MouseReel Available	Min.: 1 Mult.: 1 : 2,000	PCA9538	SMD/SMT	TSSOP-16	I2C, Serial, SMBus	8 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 Remote 16-Bit I2C & SMBus I/O Expander A A 595-PCA9555DB PCA9555DBR Texas Instruments 1: £1.63 745In Stock 8,000On Order	Mfr. Part No. PCA9555DBR Mouser Part No 595-PCA9555DBR	Texas Instruments	Interface - I/O Expanders Remote 16-Bit I2C & SMBus I/O Expander A A 595-PCA9555DB	Datasheet	745In Stock 8,000On Order On Order Ship Dates Mfr. No: PCA9555DBR Stock: 745 Can Dispatch Immediately On Order: 4,000 Expected 21/01/2027 4,000 Expected 15/03/2027 Factory Lead Time: 16 Weeks	Cut Tape £1.63 £1.20 £1.10 £0.978 Reel £0.834 View £0.925 £0.882 £0.849 £0.803 MouseReel Available	Min.: 1 Mult.: 1 : 2,000	PCA9555	SMD/SMT	SSOP-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 Remote 16-Bit I2C & SMBus I/O Expander PCA9555RGER Texas Instruments 1: £1.75 15In Stock 12,000On Order	Mfr. Part No. PCA9555RGER Mouser Part No 595-PCA9555RGER	Texas Instruments	Interface - I/O Expanders Remote 16-Bit I2C & SMBus I/O Expander	Datasheet	15In Stock 12,000On Order On Order Ship Dates Mfr. No: PCA9555RGER Stock: 15 Can Dispatch Immediately On Order: 3,000 Expected 08/01/2027 9,000 Expected 21/01/2027 Factory Lead Time: 16 Weeks	Cut Tape £1.75 £1.31 £1.20 £1.07 Reel £0.89 View £1.00 £0.978 £0.952 £0.882 MouseReel Available	Min.: 1 Mult.: 1 : 3,000	PCA9555	SMD/SMT	VQFN-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 Remote 8-Bit I2C and Low-Pwr I/O Expande A 595-TCA9534ADWR TCA9534ADWT Texas Instruments 1: £1.66 282In Stock	Mfr. Part No. TCA9534ADWT Mouser Part No 595-TCA9534ADWT	Texas Instruments	Interface - I/O Expanders Remote 8-Bit I2C and Low-Pwr I/O Expande A 595-TCA9534ADWR	Datasheet	282In Stock	Cut Tape £1.66 £1.23 £1.12 £0.995 Reel £0.969 View £0.882 £0.863 £0.841 MouseReel Available	Min.: 1 Mult.: 1 : 250	TCA9534A	SMD/SMT	SOIC-16	I2C, Serial, SMBus	8 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 8-bit 1.65- to 5.5-V I2C/SMBus I/O expan A 595-TCA9534DWR TCA9534DWT Texas Instruments 1: £1.53 501In Stock	Mfr. Part No. TCA9534DWT Mouser Part No 595-TCA9534DWT	Texas Instruments	Interface - I/O Expanders 8-bit 1.65- to 5.5-V I2C/SMBus I/O expan A 595-TCA9534DWR	Datasheet	501In Stock	Cut Tape £1.53 £1.13 £1.03 £0.917 Reel £0.856 View £0.811 £0.78 £0.773 £0.759 MouseReel Available	Min.: 1 Mult.: 1 : 250	TCA9534	SMD/SMT	SOIC-16	I2C, Serial, SMBus	8 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 16-bit 1.65- to 5.5- V I2C/SMBus I/O exp A 595-TCA9535DBR TCA9535DBT Texas Instruments 1: £1.96 462In Stock	Mfr. Part No. TCA9535DBT Mouser Part No 595-TCA9535DBT	Texas Instruments	Interface - I/O Expanders 16-bit 1.65- to 5.5- V I2C/SMBus I/O exp A 595-TCA9535DBR Learn More about Texas Instruments ti tca9535 expander	Datasheet	462In Stock	Cut Tape £1.96 £1.47 £1.34 £1.20 Reel £1.13 View £1.07 £1.02 £1.00 £0.995 MouseReel Available	Min.: 1 Mult.: 1 : 250	TCA9535	SMD/SMT	SSOP-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 16-bit 1.65- to 5.5- V I2C/SMBus I/O exp TCA9535MRGER Texas Instruments 1: £1.58 11In Stock 9,000On Order	Mfr. Part No. TCA9535MRGER Mouser Part No 595-TCA9535MRGER	Texas Instruments	Interface - I/O Expanders 16-bit 1.65- to 5.5- V I2C/SMBus I/O exp Learn More about Texas Instruments ti tca9535 expander	Datasheet	11In Stock 9,000On Order On Order Ship Dates Mfr. No: TCA9535MRGER Stock: 11 Can Dispatch Immediately On Order: 3,000 Pending 6,000 Expected 25/02/2027 Factory Lead Time: 16 Weeks	Cut Tape £1.58 £1.16 £1.06 £0.943 Reel £0.773 View £0.908 £0.759 MouseReel Available	Min.: 1 Mult.: 1 : 3,000	TCA9535	SMD/SMT	VQFN-24	I2C, Serial, SMBus	16 I/O	With Interrupt	1.65 V	5 V	400 kHz	- 40 C	+ 85 C		Reel, Cut Tape, MouseReel	2 kV
Interface - I/O Expanders Remt 16Bit I2C SMBus Lo-Pwr I/O Expndr TCA9535PWR Texas Instruments 1: £1.47 435In Stock 32,000On Order	Mfr. Part No. TCA9535PWR Mouser Part No 595-TCA9535PWR	Texas Instruments	Interface - I/O Expanders Remt 16Bit I2C SMBus Lo-Pwr I/O Expndr Learn More about Texas Instruments ti tca9535 expander	Datasheet	435In Stock 32,000On Order On Order Ship Dates Mfr. No: TCA9535PWR Stock: 435 Can Dispatch Immediately On Order: 18,000 Expected 10/12/2026 14,000 Expected 28/01/2027 Factory Lead Time: 16 Weeks	Cut Tape £1.47 £1.07 £0.978 £0.871 Reel £0.738 View £0.818 £0.788 £0.721 MouseReel Available	Min.: 1 Mult.: 1 : 2,000	TCA9535	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 1.65V to 5.5V Remote 4-Bit I2C and SMBus TCA9536BDTMR Texas Instruments 1: £1.34 577In Stock 5,000Expected 26/10/2026	Mfr. Part No. TCA9536BDTMR Mouser Part No 595-TCA9536BDTMR	Texas Instruments	Interface - I/O Expanders 1.65V to 5.5V Remote 4-Bit I2C and SMBus Learn More about Texas Instruments ti tca9536 io expander	Datasheet	577In Stock 5,000Expected 26/10/2026	Cut Tape £1.34 £0.986 £0.89 £0.796 View Reel £0.645 £0.746 £0.718 £0.715 £0.691 £0.645 MouseReel Available	Min.: 1 Mult.: 1 : 5,000	TCA9536	SMD/SMT	X2SON-8	I2C, SMBus	4 I/O	With Interrupt	1.65 V	5.5 V	1 MHz	- 40 C	+ 125 C		Reel, Cut Tape, MouseReel	1 kV, 2 kV, 4 kV
Interface - I/O Expanders 8-bit 1.65- to 5.5-V I2C/SMBus I/O expan A 595-TCA9554DWR TCA9554DWT Texas Instruments 1: £1.67 37In Stock	Mfr. Part No. TCA9554DWT Mouser Part No 595-TCA9554DWT	Texas Instruments	Interface - I/O Expanders 8-bit 1.65- to 5.5-V I2C/SMBus I/O expan A 595-TCA9554DWR Learn More about Texas Instruments ti tca9554 tca9554a expander	Datasheet	37In Stock	Cut Tape £1.67 £1.24 £1.13 £1.00 Reel £0.943 View £0.89 £0.863 £0.841 £0.826 MouseReel Available	Min.: 1 Mult.: 1 : 250	TCA9554	SMD/SMT	SOIC-16	I2C, Serial, SMBus	8 I/O	With Interrupt	1.65 V	5.5 V	400 kHz	- 40 C	+ 85 C		Reel, Cut Tape, MouseReel
Interface - I/O Expanders 16-bit 1.65- to 5.5- V I2C/SMBus I/O exp A 595-TCA9555DBR TCA9555DBT Texas Instruments 1: £2.03 467In Stock	Mfr. Part No. TCA9555DBT Mouser Part No 595-TCA9555DBT	Texas Instruments	Interface - I/O Expanders 16-bit 1.65- to 5.5- V I2C/SMBus I/O exp A 595-TCA9555DBR Learn More about Texas Instruments ti tca9555 io expander	Datasheet	467In Stock	Cut Tape £2.03 £1.51 £1.38 £1.24 Reel £1.16 View £1.10 £1.07 £1.05 £1.03 MouseReel Available	Min.: 1 Mult.: 1 : 250	TCA9555	SMD/SMT	SSOP-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
Interface - I/O Expanders Remote 16B I2C & SMB us I/O Expander TCA9555RTWR Texas Instruments 1: £1.32 20In Stock 18,000Expected 10/12/2026	Mfr. Part No. TCA9555RTWR Mouser Part No 595-TCA9555RTWR	Texas Instruments	Interface - I/O Expanders Remote 16B I2C & SMB us I/O Expander Learn More about Texas Instruments ti tca9555 io expander	Datasheet	20In Stock 18,000Expected 10/12/2026	Cut Tape £1.32 £0.969 £0.882 £0.78 View Reel £0.704 £0.734 £0.706 £0.704 £0.704 MouseReel Available	Min.: 1 Mult.: 1 Max.: 1,001 : 3,000	TCA9555	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 16-bit translating I C-bus/SMBus I/O exp TCAL6416PWR Texas Instruments 1: £1.58 112In Stock 3,000Expected 15/01/2027	Mfr. Part No. TCAL6416PWR Mouser Part No 595-TCAL6416PWR	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	112In Stock 3,000Expected 15/01/2027	Cut Tape £1.58 £1.17 £1.07 £0.952 Reel £0.803 View £0.899 £0.871 £0.856 £0.773 MouseReel Available	Min.: 1 Mult.: 1 : 3,000	TCAL6416	SMD/SMT	TSSOP-24	I2C, Serial, SMBus		With Interrupt	1.08 V	3.6 V	1 MHz	- 40 C	+ 125 C		Reel, Cut Tape, MouseReel	4 kV
Interface - I/O Expanders Mobile I/O Companion Key-Scan LM8333FLQ8Y/NOPB Texas Instruments 1: £3.81 181In Stock	Mfr. Part No. LM8333FLQ8Y/NOPB Mouser Part No 926-LM8333FLQ8Y/NOPB	Texas Instruments	Interface - I/O Expanders Mobile I/O Companion Key-Scan	Datasheet	181In Stock	Cut Tape £3.81 £2.90 £2.77 £2.51 Reel £2.24 View £2.17 £2.13 £2.11 MouseReel Available	Min.: 1 Mult.: 1 : 250	LM8333	SMD/SMT	WQFN-32	I2C, Serial	4 I/O	With Interrupt	2.25 V	2.9 V	400 kHz	- 40 C	+ 85 C		Reel, Cut Tape, MouseReel	8 kV
Interface - I/O Expanders 16-Bit, Open Drain I/O Expander with I2C Interface MCP23S18T-E/MJVAO Microchip Technology 1: £1.62 11In Stock Factory Special Order	Mfr. Part No. MCP23S18T-E/MJVAO Mouser Part No 579-MCP23S18T-EMJVAO Factory Special Order	Microchip Technology	Interface - I/O Expanders 16-Bit, Open Drain I/O Expander with I2C Interface	Datasheet	11In Stock	Cut Tape £1.62 View Reel £1.35 £1.59 £1.35	Min.: 1 Mult.: 1 : 3,300		SMD/SMT	QFN-24	Serial, SPI	16 I/O	With Interrupt	1.8 V	5.5 V	10 MHz	- 40 C	+ 125 C	AEC-Q100	Reel, Cut Tape	Without ESD Protection
Interface - I/O Expanders Remote 8-Bit I2C and SMBus LP I/O Exp PCA9557RGVR Texas Instruments 1: £1.52 25,000On Order	Mfr. Part No. PCA9557RGVR Mouser Part No 595-PCA9557RGVR	Texas Instruments	Interface - I/O Expanders Remote 8-Bit I2C and SMBus LP I/O Exp Learn More about Texas Instruments ti pca95xx	Datasheet	25,000On Order On Order Ship Dates Mfr. No: PCA9557RGVR Stock: 0 On Order: 2,500 Expected 10/12/2026 2,500 Expected 21/12/2026 10,000 Expected 25/12/2026 10,000 Expected 21/01/2027 Factory Lead Time: 9 Weeks	Cut Tape £1.52 £1.12 £1.02 £0.89 Reel £0.746 View £0.841 £0.811 £0.796 £0.725 MouseReel Available	Min.: 1 Mult.: 1 : 2,500	PCA9557	SMD/SMT	VQFN-16	I2C, Serial, SMBus	8 I/O	Without Interrupt	2.5 V	6 V	400 kHz	- 40 C	+ 85 C		Reel, Cut Tape, MouseReel	2 kV