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400 kHz Interface ICs

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Maximum Clock Frequency = 400 kHz

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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.	Product Type	Product	Type	Interface Type	Mounting Style	Package/Case
Interface - I/O Expanders Interface IO Expandr PI4IOE5V6416LEX Diodes Incorporated 1: £1.07 6,076In Stock	Mfr. Part No. PI4IOE5V6416LEX Mouser Part No 729-PI4IOE5V6416LEX	Diodes Incorporated	Interface - I/O Expanders Interface IO Expandr Learn More about Diodes Incorporated diodes pi4ioe5v6416 io expander	Datasheet	6,076In Stock	Cut Tape £1.07 £0.796 £0.701 £0.644 £0.625 Reel £0.625	Min.: 1 Mult.: 1 Max.: 410 : 3,000	I/O Expanders	I/O Expanders		I2C, Serial	SMD/SMT	TSSOP-24
Interface - I/O Expanders 16-bit I2C and SMBus Port PI4IOE5V9535LEX Diodes Incorporated 1: £1.07 5,160In Stock	Mfr. Part No. PI4IOE5V9535LEX Mouser Part No 729-PI4IOE5V9535LEX	Diodes Incorporated	Interface - I/O Expanders 16-bit I2C and SMBus Port Learn More about Diodes Incorporated pericom io expanders	Datasheet	5,160In Stock	Cut Tape £1.07 £0.78 £0.684 £0.622 £0.601 Reel £0.601 MouseReel Available	Min.: 1 Mult.: 1 Max.: 260 : 3,000	I/O Expanders	I/O Expanders	I2C, SMBus	I2C, Serial, SMBus	SMD/SMT	TSSOP-24
Interface - I/O Expanders 16-bit I2C and SMBus low power I/O port PI4IOE5V9539ZDEX Diodes Incorporated 1: £1.09 2,445In Stock 7,000Expected 18/12/2026	Mfr. Part No. PI4IOE5V9539ZDEX Mouser Part No 729-PI4IOE5V9539ZDEX	Diodes Incorporated	Interface - I/O Expanders 16-bit I2C and SMBus low power I/O port Learn More about Diodes Incorporated pericom io expanders	Datasheet	2,445In Stock 7,000Expected 18/12/2026	Cut Tape £1.09 £0.788 £0.69 £0.629 £0.608 Reel £0.608 MouseReel Available	Min.: 1 Mult.: 1 Max.: 460 : 3,500	I/O Expanders	I/O Expanders	I2C, SMBus	I2C, Serial, SMBus	SMD/SMT	TQFN-24
Interface - Signal Buffers, Repeaters Hot Swappable I2C Bus/SMBus Buffer PI6ULS5V9511AUEX Diodes Incorporated 1: £0.934 3,139In Stock	Mfr. Part No. PI6ULS5V9511AUEX Mouser Part No 729-PI6ULS5V9511AUEX	Diodes Incorporated	Interface - Signal Buffers, Repeaters Hot Swappable I2C Bus/SMBus Buffer Learn More about Diodes Incorporated diodes pi6uls5v9511a buffers	Datasheet	3,139In Stock	Cut Tape £0.934 £0.673 £0.603 £0.538 Reel £0.538 MouseReel Available	Min.: 1 Mult.: 1 Max.: 130 : 2,500	Signal Buffers, Repeaters	Buffers	Hot Swappable	I2C, SMBus	SMD/SMT	MSOP-8
Interface - I/O Expanders 8-bit I2C-bus/SMBus Level Translating I/O Expander with Interrupt and Reset in HVQFN16 package PCA6408ABSHP NXP Semiconductors 1: £1.05 6,311In Stock 12,000Expected 17/05/2027	Mfr. Part No. PCA6408ABSHP Mouser Part No 771-PCA6408ABSHP	NXP Semiconductors	Interface - I/O Expanders 8-bit I2C-bus/SMBus Level Translating I/O Expander with Interrupt and Reset in HVQFN16 package Learn More about NXP Semiconductors nxp gpioexpanders	Datasheet	6,311In Stock 12,000Expected 17/05/2027	Cut Tape £1.05 £0.759 £0.686 £0.608 View Reel £0.501 £0.571 £0.549 £0.533 £0.526 £0.501 MouseReel Available	Min.: 1 Mult.: 1 : 6,000	I/O Expanders	I/O Expanders	I/O Expander	I2C, Serial, SMBus	SMD/SMT	HVQFN-16
Interface - I/O Expanders 8-bit I2C-bus/SMBus Level Translating I/O Expander with Interrupt and Reset in TSSOP16 package PCA6408APW,118 NXP Semiconductors 1: £1.06 2,566In Stock	Mfr. Part No. PCA6408APW,118 Mouser Part No 771-PCA6408APW,118	NXP Semiconductors	Interface - I/O Expanders 8-bit I2C-bus/SMBus Level Translating I/O Expander with Interrupt and Reset in TSSOP16 package Learn More about NXP Semiconductors nxp gpioexpanders	Datasheet	2,566In Stock	Cut Tape £1.06 £0.766 £0.695 £0.62 Reel £0.546 View £0.59 £0.572 £0.558 £0.538 MouseReel Available	Min.: 1 Mult.: 1 : 2,500	I/O Expanders	I/O Expanders	I/O Expander	I2C, Serial, SMBus	SMD/SMT	TSSOP-16
Interface - I/O Expanders 8-bit I2C-bus/SMBus I/O Expander with 2-kbit EEPROM and Quasi feature in TSSOP16 package PCA9500PW,118 NXP Semiconductors 1: £2.34 2,623In Stock	Mfr. Part No. PCA9500PW,118 Mouser Part No 771-PCA9500PW-T	NXP Semiconductors	Interface - I/O Expanders 8-bit I2C-bus/SMBus I/O Expander with 2-kbit EEPROM and Quasi feature in TSSOP16 package	Datasheet	2,623In Stock	Cut Tape £2.34 £1.77 £1.63 £1.49 Reel £1.32 View £1.42 £1.40 £1.38 £1.28 MouseReel Available	Min.: 1 Mult.: 1 : 2,500	I/O Expanders	I/O Expanders	I/O Expander	I2C, Serial, SMBus	SMD/SMT	TSSOP-16
Interface - I/O Expanders 8-bit I2C-bus/SMBus I/O Expander with 2-kbit EEPROM, Interrupt and Quasi feature in TSSOP20 package PCA9501PW,118 NXP Semiconductors 1: £2.45 3,840In Stock 5,000Expected 04/11/2026	Mfr. Part No. PCA9501PW,118 Mouser Part No 771-PCA9501PW-T	NXP Semiconductors	Interface - I/O Expanders 8-bit I2C-bus/SMBus I/O Expander with 2-kbit EEPROM, Interrupt and Quasi feature in TSSOP20 package Learn More about NXP Semiconductors nxp pca9501pw 8 bit expander	Datasheet	3,840In Stock 5,000Expected 04/11/2026	Cut Tape £2.45 £1.89 £1.75 £1.58 Reel £1.40 View £1.51 £1.48 £1.47 £1.37 MouseReel Available	Min.: 1 Mult.: 1 : 2,500	I/O Expanders	I/O Expanders	I/O Expander	I2C, Serial, SMBus	SMD/SMT	TSSOP-20
Interface - Signal Buffers, Repeaters 5-channel I2C-Bus Hub PCA9516APW,118 NXP Semiconductors 1: £2.17 7,212In Stock	Mfr. Part No. PCA9516APW,118 Mouser Part No 771-PCA9516APW-T	NXP Semiconductors	Interface - Signal Buffers, Repeaters 5-channel I2C-Bus Hub	Datasheet	7,212In Stock	Cut Tape £2.17 £1.66 £1.53 £1.39 Reel £1.20 View £1.32 £1.30 £1.26 £1.15 MouseReel Available	Min.: 1 Mult.: 1 : 2,500	Signal Buffers, Repeaters	Buffers		I2C	SMD/SMT	TSSOP-16
Interface - I/O Expanders Expandable 5-channel I2C-bus hub PCA9518APW,518 NXP Semiconductors 1: £2.75 2,409In Stock 2,500Expected 18/01/2027	Mfr. Part No. PCA9518APW,518 Mouser Part No 771-PCA9518APW518	NXP Semiconductors	Interface - I/O Expanders Expandable 5-channel I2C-bus hub	Datasheet	2,409In Stock 2,500Expected 18/01/2027	Cut Tape £2.75 £2.05 £1.88 £1.68 £1.59 Reel £1.35 MouseReel Available	Min.: 1 Mult.: 1 : 2,500	I/O Expanders			I2C, Serial, SMBus	SMD/SMT	TSSOP-20
Interface - I/O Expanders 16-bit I2C-bus/SMBus I/O Expander with Interrupt, Low Power version of PCA9555, High-Impedance I/O in TSSOP24 package PCA9535CPW,118 NXP Semiconductors 1: £1.77 8,612In Stock 10,000On Order	Mfr. Part No. PCA9535CPW,118 Mouser Part No 771-PCA9535CPW118	NXP Semiconductors	Interface - I/O Expanders 16-bit I2C-bus/SMBus I/O Expander with Interrupt, Low Power version of PCA9555, High-Impedance I/O in TSSOP24 package	Datasheet	8,612In Stock 10,000On Order On Order Ship Dates Mfr. No: PCA9535CPW,118 Stock: 8,612 Can Dispatch Immediately On Order: 2,500 Expected 13/11/2026 7,500 Expected 23/11/2026 Factory Lead Time: 30 Weeks	Cut Tape £1.77 £1.32 £1.20 £1.07 View Reel £0.934 £1.01 £0.978 £0.952 £0.934 MouseReel Available	Min.: 1 Mult.: 1 : 2,500	I/O Expanders	I/O Expanders	General Purpose	I2C, Serial, SMBus	SMD/SMT	TSSOP-24
Interface - I/O Expanders 16-bit I2C-bus/SMBus I/O Expander with Interrupt, Low Power version of PCA9555 in TSSOP24 package PCA9535PW,118 NXP Semiconductors 1: £2.20 9,141In Stock 17,500Expected 13/01/2027	Mfr. Part No. PCA9535PW,118 Mouser Part No 771-PCA9535PW-T	NXP Semiconductors	Interface - I/O Expanders 16-bit I2C-bus/SMBus I/O Expander with Interrupt, Low Power version of PCA9555 in TSSOP24 package	Datasheet	9,141In Stock 17,500Expected 13/01/2027	Cut Tape £2.20 £1.64 £1.50 £1.35 Reel £1.14 View £1.27 £1.25 £1.21 £1.12 MouseReel Available	Min.: 1 Mult.: 1 : 2,500	I/O Expanders	I/O Expanders	General Purpose	I2C, Serial, SMBus	SMD/SMT	TSSOP-24
Interface - I/O Expanders 4-bit I2C-bus/SMBus I/O Expander with Interrupt and Reset in TSSOP10 package PCA9537DPZ NXP Semiconductors 1: £1.54 2,767In Stock	Mfr. Part No. PCA9537DPZ Mouser Part No 771-PCA9537DPZ	NXP Semiconductors	Interface - I/O Expanders 4-bit I2C-bus/SMBus I/O Expander with Interrupt and Reset in TSSOP10 package	Datasheet	2,767In Stock	Cut Tape £1.54 £1.14 £1.04 £0.925 Reel £0.796 View £0.871 £0.841 £0.826 £0.766 MouseReel Available	Min.: 1 Mult.: 1 : 2,500	I/O Expanders	I/O Expanders	General Purpose	I2C, Serial, SMBus	SMD/SMT	TSSOP-10
Interface - I/O Expanders 16-bit I2C-bus/SMBus I/O Expander with Interrupt and Reset, Low Power version of PCA9555 in TSSOP24 package PCA9539RPW/Q900J NXP Semiconductors 1: £2.12 1,026In Stock	Mfr. Part No. PCA9539RPW/Q900J Mouser Part No 771-PCA9539RPW/Q900J	NXP Semiconductors	Interface - I/O Expanders 16-bit I2C-bus/SMBus I/O Expander with Interrupt and Reset, Low Power version of PCA9555 in TSSOP24 package	Datasheet	1,026In Stock	Cut Tape £2.12 £1.58 £1.45 £1.30 Reel £1.05 View £1.23 £1.20 £1.17 £1.03 MouseReel Available	Min.: 1 Mult.: 1 : 2,500	I/O Expanders	I/O Expanders	General Purpose	I2C, Serial, SMBus	SMD/SMT	TSSOP-24
Interface - I/O Expanders 16-bit I2C-bus/SMBus Level Translating I/O Expander with Interrupt, Reset and Agile I/O in VFBGA24 package PCAL6416AEVJ NXP Semiconductors 1: £1.19 7,214In Stock	Mfr. Part No. PCAL6416AEVJ Mouser Part No 771-PCAL6416AEVJ	NXP Semiconductors	Interface - I/O Expanders 16-bit I2C-bus/SMBus Level Translating I/O Expander with Interrupt, Reset and Agile I/O in VFBGA24 package Learn More about NXP Semiconductors nxp gpioexpanders	Datasheet	7,214In Stock	Cut Tape £1.19 £0.882 £0.803 £0.711 View Reel £0.60 £0.674 £0.651 £0.645 £0.625 £0.60 MouseReel Available	Min.: 1 Mult.: 1 : 6,000	I/O Expanders	I/O Expanders	I/O Expander	I2C, Serial, SMBus	SMD/SMT	VFBGA-24
Interface - Signal Buffers, Repeaters Ultra Low Power 10.3 Gbps 2Ch Repeater A A 926-DS64BR111SQ/NOPB DS64BR111SQE/NOPB Texas Instruments 1: £12.20 623In Stock 500Expected 23/11/2026	Mfr. Part No. DS64BR111SQE/NOPB Mouser Part No 926-DS64BR111SQENOPB	Texas Instruments	Interface - Signal Buffers, Repeaters Ultra Low Power 10.3 Gbps 2Ch Repeater A A 926-DS64BR111SQ/NOPB	Datasheet	623In Stock 500Expected 23/11/2026	Cut Tape £12.20 £9.66 £9.20 £8.36 Reel £8.16 MouseReel Available	Min.: 1 Mult.: 1 : 250	Signal Buffers, Repeaters	Repeaters	I2C, SMBus		SMD/SMT	WQFN-24
Interface - I/O Expanders 16 bit In/Out MCP23016-I/SO Microchip Technology 1: £1.60 454In Stock	Mfr. Part No. MCP23016-I/SO Mouser Part No 579-MCP23016-I/SO	Microchip Technology	Interface - I/O Expanders 16 bit In/Out	Datasheet	454In Stock	£1.60 £1.34	Min.: 1 Mult.: 1	I/O Expanders	I/O Expanders	I/O Expander	I2C, Serial	SMD/SMT	SOIC-28
Interface - I/O Expanders 16 bit In/Out MCP23016-I/SP Microchip Technology 1: £1.68 491In Stock	Mfr. Part No. MCP23016-I/SP Mouser Part No 579-MCP23016-I/SP	Microchip Technology	Interface - I/O Expanders 16 bit In/Out	Datasheet	491In Stock	£1.68 £1.41	Min.: 1 Mult.: 1	I/O Expanders	I/O Expanders	I/O Expander	I2C, Serial	Through Hole	SPDIP-28
Interface - Signal Buffers, Repeaters Hot Swappable 2-Wire Bus Bufs LTC4300A-1CMS8#PBF Analog Devices 1: £5.33 506In Stock	Mfr. Part No. LTC4300A-1CMS8#PBF Mouser Part No 584-C4300A-1CMS8PBF	Analog Devices	Interface - Signal Buffers, Repeaters Hot Swappable 2-Wire Bus Bufs	Datasheet	506In Stock	£5.33 £4.09 £3.46 £3.42 View £3.26 £3.16 £3.13 £3.08	Min.: 1 Mult.: 1	Signal Buffers, Repeaters	Buffers	Hot Swappable	2-Wire, I2C, SMBus	SMD/SMT	MSOP-8
Interface - Signal Buffers, Repeaters Hot Swappable 2-Wire Bus Bufs LTC4300A-2CMS8#PBF Analog Devices 1: £5.33 488In Stock	Mfr. Part No. LTC4300A-2CMS8#PBF Mouser Part No 584-C4300A-2CMS8PBF	Analog Devices	Interface - Signal Buffers, Repeaters Hot Swappable 2-Wire Bus Bufs	Datasheet	488In Stock	£5.33 £4.28 £3.64 £3.57 View £3.40 £3.13 £3.11 £3.08	Min.: 1 Mult.: 1	Signal Buffers, Repeaters	Buffers	Hot Swappable	2-Wire, I2C, SMBus	SMD/SMT	MSOP-8
Interface - Signal Buffers, Repeaters Hot Swappable 2-Wire Bus Bufs LTC4300-1IMS8#PBF Analog Devices 1: £5.59 307In Stock	Mfr. Part No. LTC4300-1IMS8#PBF Mouser Part No 584-LTC4300-1IMS8PBF	Analog Devices	Interface - Signal Buffers, Repeaters Hot Swappable 2-Wire Bus Bufs	Datasheet	307In Stock	£5.59 £4.31 £3.66 £3.62 View £3.36 £2.99	Min.: 1 Mult.: 1	Signal Buffers, Repeaters	Buffers	Hot Swappable	2-Wire, I2C, SMBus	SMD/SMT	MSOP-8
Interface - Signal Buffers, Repeaters Level Shifting Hot Swappable 2-Wire Bus LTC4300A-3CDD#PBF Analog Devices 1: £3.14 79In Stock	Mfr. Part No. LTC4300A-3CDD#PBF Mouser Part No 584-LTC4300A-3CDDPBF	Analog Devices	Interface - Signal Buffers, Repeaters Level Shifting Hot Swappable 2-Wire Bus	Datasheet	79In Stock	£3.14 £3.08 £3.06	Min.: 1 Mult.: 1	Signal Buffers, Repeaters	Buffers	Hot Swappable	2-Wire, I2C, SMBus	SMD/SMT	DFN-8
Interface - Signal Buffers, Repeaters 2-Wire Bus Bufs w/ Hi N Margin LTC4313CMS8-3#PBF Analog Devices 1: £6.59 135In Stock	Mfr. Part No. LTC4313CMS8-3#PBF Mouser Part No 584-LTC4313CMS8-3PBF	Analog Devices	Interface - Signal Buffers, Repeaters 2-Wire Bus Bufs w/ Hi N Margin	Datasheet	135In Stock	£6.59 £5.11 £4.73 £4.32 View £4.13 £4.01 £3.90 £3.70	Min.: 1 Mult.: 1	Signal Buffers, Repeaters	Buffers	2-Wire Bus	2-Wire, I2C, SMBus	SMD/SMT	MSOP-8
Interface - Signal Buffers, Repeaters 2-Wire Bus Bufs w/ Hi N Margin LTC4313IDD-3#PBF Analog Devices 1: £7.45 467In Stock 605On Order	Mfr. Part No. LTC4313IDD-3#PBF Mouser Part No 584-LTC4313IDD-3#PBF	Analog Devices	Interface - Signal Buffers, Repeaters 2-Wire Bus Bufs w/ Hi N Margin	Datasheet	467In Stock 605On Order	£7.45 £5.80 £5.39 £4.93 View £4.67 £4.49 £4.43 Quote	Min.: 1 Mult.: 1	Signal Buffers, Repeaters	Buffers	2-Wire Bus	2-Wire, I2C, SMBus	SMD/SMT	DFN-8
Interface - Signal Buffers, Repeaters 2-Wire Bus Bufs w/ Hi N Margin LTC4313IMS8-1#PBF Analog Devices 1: £7.45 417In Stock	Mfr. Part No. LTC4313IMS8-1#PBF Mouser Part No 584-LTC4313IMS8-1PBF	Analog Devices	Interface - Signal Buffers, Repeaters 2-Wire Bus Bufs w/ Hi N Margin	Datasheet	417In Stock	£7.45 £5.81 £4.92 £4.67 View £4.57 £4.47 Quote	Min.: 1 Mult.: 1	Signal Buffers, Repeaters	Buffers	Hot Swappable	2-Wire, I2C, SMBus	SMD/SMT	MSOP-8