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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 (USD) 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 16-bit I2C and SMBus low power I/O port PI4IOE5V9539ZDEX Diodes Incorporated 1: $1.45 2,368In 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	2,368In Stock 7,000Expected 18/12/2026	Cut Tape $1.45 $1.05 $0.919 $0.838 $0.81 Reel $0.81 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: $1.24 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 $1.24 $0.896 $0.803 $0.716 Reel $0.716 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: $1.39 6,311In Stock 12,000Expected 24/05/2027	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 24/05/2027	Cut Tape $1.39 $1.01 $0.914 $0.81 View Reel $0.667 $0.761 $0.731 $0.71 $0.70 $0.667 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: $1.41 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 $1.41 $1.02 $0.925 $0.826 Reel $0.728 View $0.786 $0.762 $0.743 $0.716 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: $3.12 2,620In 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	2,620In Stock	Cut Tape $3.12 $2.36 $2.18 $1.99 Reel $1.75 View $1.89 $1.86 $1.84 $1.71 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: $3.27 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 $3.27 $2.51 $2.32 $2.11 Reel $1.86 View $2.01 $1.98 $1.95 $1.82 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: $2.88 7,512In Stock	Mfr. Part No. PCA9516APW,118 Mouser Part No 771-PCA9516APW-T	NXP Semiconductors	Interface - Signal Buffers, Repeaters 5-channel I2C-Bus Hub	Datasheet	7,512In Stock	Cut Tape $2.88 $2.21 $2.04 $1.85 Reel $1.59 View $1.76 $1.73 $1.68 $1.53 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: $3.66 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 $3.66 $2.73 $2.50 $2.24 $2.12 Reel $1.80 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 in TSSOP24 package PCA9535PW,118 NXP Semiconductors 1: $2.93 8,591In 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	8,591In Stock 17,500Expected 13/01/2027	Cut Tape $2.93 $2.19 $2.00 $1.80 Reel $1.52 View $1.70 $1.66 $1.62 $1.49 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: $2.05 2,664In 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	2,664In Stock	Cut Tape $2.05 $1.52 $1.38 $1.23 Reel $1.06 View $1.16 $1.12 $1.10 $1.02 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 8-bit I2C-bus/SMBus I/O Expander with Interrupt and Reset in TSSOP16 package PCA9538PW/Q900,118 NXP Semiconductors 1: $3.22 2,498In Stock	Mfr. Part No. PCA9538PW/Q900,118 Mouser Part No 771-PCA9538PW/Q90011	NXP Semiconductors	Interface - I/O Expanders 8-bit I2C-bus/SMBus I/O Expander with Interrupt and Reset in TSSOP16 package	Datasheet	2,498In Stock	Cut Tape $3.22 $2.40 $2.19 $1.97 $1.86 Reel $1.58 MouseReel Available	Min.: 1 Mult.: 1 : 2,500	I/O Expanders			I2C, Serial, SMBus	SMD/SMT	TSSOP-16
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: $2.82 823In 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	823In Stock	Cut Tape $2.82 $2.11 $1.93 $1.73 Reel $1.40 View $1.64 $1.60 $1.56 $1.37 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: $1.58 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 $1.58 $1.17 $1.07 $0.948 View Reel $0.799 $0.898 $0.867 $0.859 $0.832 $0.799 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: $16.25 623In Stock 500Expected 21/12/2026	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 21/12/2026	Cut Tape $16.25 $12.87 $12.26 $11.14 Reel $10.65 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: $2.13 424In 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	424In Stock	$2.13 $1.78 $1.76	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: $2.24 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	$2.24 $1.86 $1.85	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: $7.09 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	$7.09 $5.44 $4.61 $4.56 View $4.34 $4.21 $4.16 $4.11	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: $7.09 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	$7.09 $5.70 $4.85 $4.75 View $4.53 $4.17 $4.14 $4.11	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: $7.44 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	$7.44 $5.74 $4.87 $4.83 View $4.48 $3.98	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 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		Request a Quote	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: $8.78 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	$8.78 $6.80 $6.30 $5.76 View $5.50 $5.34 $5.20 Quote	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: $9.92 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	$9.92 $7.72 $7.17 $6.57 View $6.22 $5.98 $5.89 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: $9.92 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	$9.92 $7.73 $6.56 $6.22 View $6.09 $5.95 Quote	Min.: 1 Mult.: 1	Signal Buffers, Repeaters	Buffers	Hot Swappable	2-Wire, I2C, SMBus	SMD/SMT	MSOP-8
Interface - Signal Buffers, Repeaters 2-Wire Bus Buf w/ Hi N Margin LTC4315CMS#PBF Analog Devices 1: $8.73 405In Stock	Mfr. Part No. LTC4315CMS#PBF Mouser Part No 584-LTC4315CMS#PBF	Analog Devices	Interface - Signal Buffers, Repeaters 2-Wire Bus Buf w/ Hi N Margin	Datasheet	405In Stock	$8.73 $6.76 $6.10 $5.69 View $5.38 $5.30 $5.17 Quote	Min.: 1 Mult.: 1	Signal Buffers, Repeaters	Buffers	Hot Swappable	2-Wire, I2C, SMBus	SMD/SMT	MSOP-12
Interface - I/O Expanders 2-Wire-Interfaced, 2.5V to 5.5V, 20-Port MAX7300ATL+T Analog Devices / Maxim Integrated 1: $18.60 1,106In Stock	Mfr. Part No. MAX7300ATL+T Mouser Part No 700-MAX7300ATL+T	Analog Devices / Maxim Integrated	Interface - I/O Expanders 2-Wire-Interfaced, 2.5V to 5.5V, 20-Port	Datasheet	1,106In Stock	Cut Tape $18.60 $14.78 $13.83 $12.79 View $12.22 $12.09 $12.08 $11.45 MouseReel Available	Min.: 1 Mult.: 1	I/O Expanders			I2C, Serial	SMD/SMT	TQFN-40