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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 Interface IO Expander W-QFN3030-16 T&R 3.5K PI4IOE5V9554ZHEX Diodes Incorporated 1: $1.11 8,729In Stock 12,403On Order	Mfr. Part No. PI4IOE5V9554ZHEX Mouser Part No 621-PI4IOE5V9554ZHEX	Diodes Incorporated	Interface - I/O Expanders Interface IO Expander W-QFN3030-16 T&R 3.5K Learn More about Diodes Incorporated diodes pi4ioe5v9554 8 bit expander	Datasheet	8,729In Stock 12,403On Order On Order Ship Dates Mfr. No: PI4IOE5V9554ZHEX Stock: 8,729 Can Dispatch Immediately On Order: 1,903 Pending 10,500 Expected 25/12/2026 Factory Lead Time: 48 Weeks	Cut Tape $1.11 $0.802 $0.722 $0.635 View Reel $0.526 $0.594 $0.568 $0.55 $0.526	Min.: 1 Mult.: 1 Max.: 3,500 : 3,500	I/O Expanders	I/O Expanders	I2C-Bus/SMBus	I2C, Serial, SMBus	SMD/SMT	TQFN-16
Interface - I/O Expanders I2C/SMBUS Expander 16B,w/Int CAT9555YI-T2 onsemi 1: $1.52 16,170In Stock	Mfr. Part No. CAT9555YI-T2 Mouser Part No 698-CAT9555YI-T2	onsemi	Interface - I/O Expanders I2C/SMBUS Expander 16B,w/Int	Datasheet	16,170In Stock	Cut Tape $1.52 $1.11 $1.01 $0.897 View Reel $0.749 $0.842 $0.809 $0.799 $0.749 MouseReel Available	Min.: 1 Mult.: 1 Max.: 2,000 : 2,000	I/O Expanders		I2C, SMBus	I2C, Serial, SMBus	SMD/SMT	TSSOP-24
Interface - I/O Expanders Interface IO Expandr PI4IOE5V6416LEX Diodes Incorporated 1: $1.42 6,374In 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	6,374In Stock	Cut Tape $1.42 $1.06 $0.934 $0.858 $0.832 Reel $0.832	Min.: 1 Mult.: 1 Max.: 410 : 3,000	I/O Expanders	I/O Expanders		I2C, Serial	SMD/SMT	TSSOP-24
Interface - I/O Expanders Interface IO Expander PI4IOE5V6416ZDEX Diodes Incorporated 1: $1.61 2,418In Stock 84,000On Order	Mfr. Part No. PI4IOE5V6416ZDEX Mouser Part No 729-PI4IOE5V6416ZDEX	Diodes Incorporated	Interface - I/O Expanders Interface IO Expander Learn More about Diodes Incorporated diodes pi4ioe5v6416 io expander	Datasheet	2,418In Stock 84,000On Order On Order Ship Dates Mfr. No: PI4IOE5V6416ZDEX Stock: 2,418 Can Dispatch Immediately On Order: 21,000 Expected 26/05/2027 28,000 Expected 06/03/2028 35,000 Expected 31/03/2028 Factory Lead Time: 48 Weeks	Cut Tape $1.61 $1.17 $0.993 $0.939 View Reel $0.668 $0.772 $0.741 $0.708 $0.668 MouseReel Available	Min.: 1 Mult.: 1 Max.: 3,500 : 3,500	I/O Expanders			I2C, Serial	SMD/SMT	TQFN-24
Interface - I/O Expanders 16-bit I2C and SMBus Port PI4IOE5V9535LEX Diodes Incorporated 1: $1.43 5,760In 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	5,760In Stock	Cut Tape $1.43 $1.04 $0.91 $0.829 $0.801 Reel $0.801 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 8-bit I2C and SMBus IO Port PI4IOE5V9554LEX Diodes Incorporated 1: $1.36 2,904In Stock 2,500Expected 16/04/2027	Mfr. Part No. PI4IOE5V9554LEX Mouser Part No 729-PI4IOE5V9554LEX	Diodes Incorporated	Interface - I/O Expanders 8-bit I2C and SMBus IO Port Learn More about Diodes Incorporated pericom io expanders	Datasheet	2,904In Stock 2,500Expected 16/04/2027	Cut Tape $1.36 $0.978 $0.859 $0.783 $0.757 Reel $0.757	Min.: 1 Mult.: 1 Max.: 460 : 2,500	I/O Expanders	I/O Expanders	I2C, SMBus	I2C, Serial, SMBus	SMD/SMT	TSSOP-16
Interface - Signal Buffers, Repeaters Hot Swappable I2C Bus/SMBus Buffer PI6ULS5V9511AUEX Diodes Incorporated 1: $1.24 3,189In 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	3,189In 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: $1.41 6,811In Stock 12,000Expected 10/05/2027	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	6,811In Stock 12,000Expected 10/05/2027	Cut Tape $1.41 $1.02 $0.924 $0.817 View Reel $0.666 $0.765 $0.734 $0.702 $0.682 $0.666 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 2,586In 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	2,586In Stock	Cut Tape $1.41 $1.02 $0.925 $0.818 Reel $0.719 View $0.779 $0.748 $0.729 $0.699 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: $2.84 2,753In 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	2,753In Stock	Cut Tape $2.84 $2.14 $1.97 $1.85 Reel $1.63 View $1.76 $1.73 $1.67 $1.60 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: $3.55 3,865In 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	3,865In Stock 5,000Expected 04/11/2026	Cut Tape $3.55 $2.65 $2.42 $2.17 $2.06 Reel $1.74 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: $3.09 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 $3.09 $2.30 $2.11 $1.89 $1.79 Reel $1.51 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, High-Impedance I/O in TSSOP24 package PCA9535CPW,118 NXP Semiconductors 1: $2.57 1,112In Stock 17,500On 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	1,112In Stock 17,500On Order On Order Ship Dates Mfr. No: PCA9535CPW,118 Stock: 1,112 Can Dispatch Immediately On Order: 10,000 Expected 29/10/2026 7,500 Expected 23/11/2026 Factory Lead Time: 30 Weeks	Cut Tape $2.57 $1.91 $1.74 $1.56 View Reel $1.30 $1.47 $1.42 $1.37 $1.30 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 2,767In 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 $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 16-bit I2C-bus/SMBus I/O Expander with Interrupt and Reset, Low Power version of PCA9555 in TSSOP24 package PCA9539RPW,118 NXP Semiconductors 1: $2.28 2,425In Stock	Mfr. Part No. PCA9539RPW,118 Mouser Part No 771-PCA9539RPW,118	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	2,425In Stock	Cut Tape $2.28 $1.68 $1.53 $1.37 Reel $1.18 View $1.29 $1.25 $1.21 $1.14 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 in HVQFN24 package PCA9555BS,118 NXP Semiconductors 1: $2.33 9,058In Stock 18,000Expected 26/01/2027	Mfr. Part No. PCA9555BS,118 Mouser Part No 771-PCA9555BS-T	NXP Semiconductors	Interface - I/O Expanders 16-bit I2C-bus/SMBus I/O Expander with Interrupt in HVQFN24 package Learn More about NXP Semiconductors nxpinterface	Datasheet	9,058In Stock 18,000Expected 26/01/2027	Cut Tape $2.33 $1.83 $1.70 $1.59 View Reel $1.40 $1.52 $1.50 $1.46 $1.40 $1.40 MouseReel Available	Min.: 1 Mult.: 1 : 6,000	I/O Expanders	I/O Expanders	I/O Expander	I2C, Serial, SMBus	SMD/SMT	HVQFN-24
Interface - I/O Expanders 16-bit I2C-bus/SMBus I/O Expander with Interrupt in SO24 package PCA9555D,118 NXP Semiconductors 1: $2.92 8,995In Stock 5,000Expected 12/02/2027	Mfr. Part No. PCA9555D,118 Mouser Part No 771-PCA9555D-T	NXP Semiconductors	Interface - I/O Expanders 16-bit I2C-bus/SMBus I/O Expander with Interrupt in SO24 package Learn More about NXP Semiconductors nxpinterface	Datasheet	8,995In Stock 5,000Expected 12/02/2027	Cut Tape $2.92 $2.18 $2.00 $1.80 Reel $1.57 View $1.70 $1.67 $1.53 $1.45 MouseReel Available	Min.: 1 Mult.: 1 : 1,000	I/O Expanders	I/O Expanders	I/O Expander	I2C, Serial, SMBus	SMD/SMT	SO-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: $1.64 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 $1.64 $1.21 $1.10 $0.971 View Reel $0.799 $0.913 $0.878 $0.871 $0.841 $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 19/11/2026	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 19/11/2026	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 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	$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 - I/O Expanders Rem 8B I2C & Lo-Pwr I/O Expander A 595-P A 595-PCA9534DBR PCA9534DB Texas Instruments 1: $5.04 109In Stock	Mfr. Part No. PCA9534DB Mouser Part No 595-PCA9534DB	Texas Instruments	Interface - I/O Expanders Rem 8B I2C & Lo-Pwr I/O Expander A 595-P A 595-PCA9534DBR	Datasheet	109In Stock	$5.04 $3.84 $3.26 $3.12 View $3.09 $3.08 $2.98 $2.94	Min.: 1 Mult.: 1	I/O Expanders			I2C, Serial, SMBus	SMD/SMT	SSOP-16
Interface - I/O Expanders Remote 4-Bit I2C and SMBus I/O Expander A 595-PCA9536D PCA9536DR Texas Instruments 1: $1.56 186In Stock 10,000Expected 22/02/2027	Mfr. Part No. PCA9536DR Mouser Part No 595-PCA9536DR	Texas Instruments	Interface - I/O Expanders Remote 4-Bit I2C and SMBus I/O Expander A 595-PCA9536D	Datasheet	186In Stock 10,000Expected 22/02/2027	Cut Tape $1.56 $1.15 $1.04 $0.92 Reel $0.793 View $0.865 $0.831 $0.823 $0.775 MouseReel Available	Min.: 1 Mult.: 1 : 2,500	I/O Expanders	I/O Expanders	I/O Expander	I2C, Serial, SMBus	SMD/SMT	SOIC-8
Interface - I/O Expanders 16-Bit I2C & SMBus L o-Pwr I/O Expander A 595-PCA9539DBR PCA9539DB Texas Instruments 1: $4.92 70In Stock	Mfr. Part No. PCA9539DB Mouser Part No 595-PCA9539DB	Texas Instruments	Interface - I/O Expanders 16-Bit I2C & SMBus L o-Pwr I/O Expander A 595-PCA9539DBR	Datasheet	70In Stock	$4.92 $3.75 $3.46 $3.12 View $2.97 $2.90 $2.89 $2.87	Min.: 1 Mult.: 1	I/O Expanders	I/O Expanders	I/O Expander	I2C, Serial, SMBus	SMD/SMT	SSOP-24