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I/O Expanders

Manufacturer	Series	Package/Case	Packaging	Product Status	Programmable	Number of I/O	Interface	Interrupt Output	Features	Output Type	Current - Output Source/Sink	Clock Frequency	Voltage - Supply	Operating Temperature	Grade	Qualification	Mounting Type	Supplier Device Package
3PEAK ABLIC Inc. Analog Devices Inc. Analog Devices Inc./Maxim Integrated Broadcom Limited Catalyst Semiconductor Inc. Cypress Semiconductor Corp Diodes Incorporated Harris Corporation Infineon Technologies Intersil Kinetic Technologies Lumissil Microsystems MaxLinear, Inc. Microchip Technology Motorola National Semiconductor Nexperia NOVOSENSE Nuvoton Technology Corporation NXP Semiconductors onsemi Renesas Rochester Electronics, LLC ROHM Semiconductor Sanyo Semtech Corporation Silicon Labs Skyworks Solutions Inc. SMSC SparkFun Electronics STMicroelectronics Texas Instruments	* - Agile CAT9534 CAT9554 CAT9554A CAT9555 MC1200 SAS4xNN Xpander Logic™	- 10-TFSOP, 10-MSOP (0.118", 3.00mm Width) 100-LQFP 12-XFQFN 14-CFlatPack 14-DIP (0.300", 7.62mm) 14-SOIC (0.154", 3.90mm Width) 16-DIP (0.300", 7.62mm) 16-SOIC (0.154", 3.90mm Width) 16-SOIC (0.209", 5.30mm Width) 16-SOIC (0.295", 7.50mm Width) 16-SSOP (0.154", 3.90mm Width) 16-SSOP (0.209", 5.30mm Width) 16-TFSOP (0.173", 4.40mm Width) 16-TSSOP (0.173", 4.40mm Width) 16-UFBGA, CSPBGA 16-UFBGA, WLBGA 16-UFQFN 16-VFQFN Exposed Pad 16-VQFN Exposed Pad 16-WFBGA, DSBGA 16-WFQFN Exposed Pad 16-WQFN Exposed Pad 16-XFBGA 16-XFLGA 16-XFQFN 16-XFQFN Exposed Pad 18-DIP (0.300", 7.62mm) 18-SOIC (0.295", 7.50mm Width) 20-LSSOP (0.173", 4.40mm Width) 20-SOIC (0.295", 7.50mm Width) 20-SSOP (0.209", 5.30mm Width) 20-TFSOP (0.173", 4.40mm Width) 20-TSSOP (0.173", 4.40mm Width) 20-UFBGA 20-UFQFN Exposed Pad 20-VFQFN Exposed Pad 20-VQFN Exposed Pad 24-CDIP (0.600", 15.24mm) 24-DIP (0.600", 15.24mm) 24-QFN 24-SOIC (0.295", 7.50mm Width) 24-SOP (0.236", 6.00mm Width) 24-SSOP (0.154", 3.90mm Width) 24-SSOP (0.209", 5.30mm Width) 24-TFSOP (0.173", 4.40mm Width) 24-TSSOP (0.173", 4.40mm Width) 24-TSSOP (0.307", 4.40mm Width) 24-UFBGA 24-VFBGA 24-VFQFN Exposed Pad 24-WFQFN Exposed Pad 24-WFQFN Exposed Pad, CSP 24-XFBGA 24-XFLGA 25-TFBGA 25-UFBGA, WLCSP 25-VFBGA, WLBGA 25-WFBGA, WLCSP 25-XFBGA, DSBGA 28-DIP (0.300", 7.62mm) 28-SOIC (0.295", 7.50mm Width) 28-SSOP (0.209", 5.30mm Width) 28-TSSOP (0.173", 4.40mm Width) 28-UFQFN Exposed Pad 28-VQFN Exposed Pad 28-WFQFN Exposed Pad 32-UFQFN Exposed Pad 32-VFQFN Exposed Pad 32-WFQFN Exposed Pad 35-VFBGA 36-BSOP (0.295", 7.50mm Width) 36-SOP (0.311", 7.90mm Width) 36-TFBGA 36-VFBGA 36-VFBGA, WLBGA 40-CDIP (0.600", 15.24mm) 40-DIP (0.600", 15.24mm) 40-VFQFN Exposed Pad 40-WFQFN Exposed Pad 42-VFBGA 44-LCC (J-Lead) 44-QFP 46-WFQFN Exposed Pad 48-BSSOP (0.295", 7.50mm Width) 56-TFSOP (0.240", 6.10mm Width) 56-VFQFN Exposed Pad 56-WFQFN Exposed Pad 8-SOIC (0.154", 3.90mm Width) 8-TFSOJ (0.069", 1.75mm Width) 8-TSSOP, 8-MSOP (0.118", 3.00mm Width) 8-TSSOP, 8-MSOP (0.118", 3.00mm Width) Exposed Pad 8-UFQFN Exposed Pad 8-VFDFN Exposed Pad 8-XFBGA, DSBGA 8-XFDFN Exposed Pad 8-XFQFN Exposed Pad Die	Bag Bulk Tape & Reel (TR) Tray Tube	Active Discontinued at Key Last Time Buy Not For New Designs Obsolete	- Not Verified Verified	- 1 10 14 16 16 (8 Output Only) 16 (Input Only) 18 20 22 24 28 3 34 4 40 48 5 60 8 8 (Input Only) 8 (Output Only) 9	- 1-Wire® 2-Wire CAN (1-Wire) CAN V2.0b CMOS I2C I2C, 2-Wire Serial I2C, JTAG I2C, Serial I2C, SMBus I2C, SPI MIPI® RFFE Parallel Serial SMBus SPI SPI Serial	- No Yes	- ADC, EEPROM, POR, PWM Buzzer Outputs, LED Outputs, POR DAC, POR EEPROM EEPROM, POR EEPROM, POR, PWM EEPROM, POR, PWM, WDT Fan Speed Controller Keypad Controller, LED Output, POR Keypad Controller, POR Keypad Controller, POR, PWM LED Output(s) LED Output(s), POR POR PWM	- CMOS, Open-Drain Open Collector, Open Drain, Push-Pull Open Drain Open Drain, Push-Pull Push-Pull	- 100mA 100µA, 25mA 10mA 10mA, 10mA 10mA, 15mA 10mA, 20mA 10mA, 24mA 10mA, 25mA 12mA 160mA 16mA 18mA, 30mA 1mA, 25mA 1mA, 3mA 2.5mA 20mA 25mA 300µA, 25mA 300µA, 41mA 300µA, 42mA 300µA, 43mA 31mA, 43mA 3mA 4.4mA, 6.1mA 4.5mA, 10mA 42mA 42mA, 480µA 4mA 50mA 65mA 6mA 7mA, 10mA 8mA, 15mA 8mA, 24mA	- 1 MHz 1.7 MHz 10 MHz 100 kHz 20 MHz 25 MHz 26 MHz 3.4 MHz 4 MHz 400 kHz 5 MHz	- 0.8V ~ 3.6V, 1.65V ~ 5.5V 1.08V ~ 3.6V 1.1V ~ 3.6V 1.1V ~ 5.5V, 1.65V ~ 5.5V 1.2V ~ 3.6V 1.2V ~ 5.5V 1.425V ~ 3.6V 1.65V ~ 1.95V 1.65V ~ 3.6V 1.65V ~ 4V 1.65V ~ 5.5V 1.71V ~ 5.5V 1.7V ~ 5.5V 1.8V ~ 3.3V 1.8V ~ 5.5V 2.25V ~ 3.6V 2.3V ~ 3.6V 2.3V ~ 4.5V 2.3V ~ 5.5V 2.4V ~ 5.5V 2.5V ~ 3.6V 2.5V ~ 5.5V 2.5V ~ 6V 2.75V ~ 5.5V 2.7V ~ 3.6V 2.7V ~ 5.5V 2.8V ~ 5.25V 2V ~ 3.6V 2V ~ 5.5V 2V ~ 6V 3.3V 3V ~ 3.6V 3V ~ 5.25V 3V ~ 5.5V 4.2V ~ 6V 4.5V ~ 5.5V 4V ~ 10.5V 4V ~ 6.5V 5.2V	- -20°C ~ 85°C -25°C ~ 85°C -30°C ~ 70°C -30°C ~ 85°C -40°C ~ 105°C -40°C ~ 125°C -40°C ~ 85°C -55°C ~ 125°C 0°C ~ 70°C 0°C ~ 85°C	- Automotive	- AEC-Q100	- Surface Mount Surface Mount, Wettable Flank Through Hole	- 10-MSOP 10-TSSOP 10-VSSOP 100-TQFP (14x14) 12-XQFN (2x1.7) 14-CFlatPack 14-PDIP 14-SOIC 14-SOP 16-DIP 16-DSBGA (2.5x2.12) 16-HVQFN (3x3) 16-HVQFN (4x4) 16-HXQFNU (2x2) 16-PDIP 16-QFN (2.6x1.8) 16-QFN (3x3) 16-QSOP 16-SO 16-SOEIAJ 16-SOIC 16-SOP 16-SSOP 16-TQFN (3x3) 16-TQFN (4x4) 16-TSSOP 16-TVSOP 16-UCSP (2x2) 16-UMLP (1.8x2.6) 16-UQFN (1.8x2.6) 16-UQFN (2.6x1.8) 16-VQFN (3x3) 16-VQFN (4x3.5) 16-VQFN (4x4) 16-X2QFN (1.6x1.6) 16-XFBGA (1.6x1.6) 16-XQFN (1.8x2.6) 18-PDIP 18-SOIC 20-BGA Microstar Junior (2.5x3.0) 20-HVQFN (5x5) 20-QFN (4x4) 20-QFN-UT (3x3) 20-SO 20-SSOP 20-TSSOP 20-TVSOP 20-VQFN (3.5x4.5) 24-BGA MICROSTAR JUNIOR (3x3) 24-DHVQFN (5.5x3.5) 24-DIP 24-HVQFN (4x4) 24-HWQFN (4x4) 24-LFCSP-WQ (4x4) 24-MFPSJ 24-PDIP 24-QFN 24-QFN (4x4) 24-QSOP 24-SBDIP 24-SO 24-SOIC 24-SOP 24-SSOP 24-TQFN (4x4) 24-TQFN-EP (3.5x3.5) 24-TQFN-EP (4x4) 24-TSSOP 24-TVSOP 24-UFBGA (2x2) 24-VFBGA (3x3) 24-VQFN (4x4) 24-WQFN (4x4) 24-X2QFN (2x2) 24-XFBGA (2x2) 25-DSBGA 25-FlipChip (2x2) 25-FOWLP (2x2) 25-TFBGA (3x3) 25-WLCSP (1.97x1.97) 28-PDIP 28-QFN (6x6) 28-QFN-UT (4x4) 28-SOIC 28-SPDIP 28-SSOP 28-TQFN (5x5) 28-TSSOP 32-HUQFN (5x5) 32-HVQFN (5x5) 32-TQFN (3x6) 32-TQFN (5x5) 32-UQFN (5x5) 36-FOWLP (2.6x2.6) 36-MFPSDJ 36-SSOP 36-TFBGA (3.5x3.5) 36-VFBGA (2.6x2.6) 40-Cerdip 40-PDIP 40-SQFN (6x6) 40-TQFN (6x6) 42-VFBGA (2.6x3) 44-MQFP (10x10) 44-PLCC (16.58x16.58) 48-SSOP 56-HVQFN (8x8) 56-TQFN (7x7) 56-TSSOP 8-DSBGA (1.9x0.9) 8-HVSON (3x3) 8-MSOP 8-MSOP-EP 8-SC70JW 8-SO 8-SOIC 8-TSSOP 8-UQFN (1.6x1.6) 8-VSSOP 8-X2SON (1.35x0.8) 8-XQFN (1.6x1.6) Die VBGA035W040 VQFN016V3030 W-QFN4565-46 (SWP) WLP-16A-C

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I/O Expanders are interface ICs used to increase the number of input and output ports available to microcontrollers, processors and embedded systems. They are widely used in industrial control, communication equipment, consumer electronics, automotive electronics, medical devices, IoT products, smart home devices and embedded control applications.

This category includes GPIO expanders, I2C I/O expanders, SPI I/O expanders, port expanders, keypad interface expanders, LED control expanders and related interface control components. These devices are commonly selected based on interface type, number of I/O channels, supply voltage, interrupt support, output drive capability, package type and system compatibility.

TomatoElec supplies original I/O Expanders from recognized semiconductor manufacturers such as Texas Instruments, NXP, Microchip, STMicroelectronics, onsemi, Diodes Incorporated, Renesas, Infineon and other major brands. As an in-stock electronic components supplier and independent distributor, TomatoElec provides inventory support, original component sourcing and BOM sourcing services for global customers.

Mfr. Part #	Price	Quantity	Datasheet	Series	Package/Case	Packaging	Product Status	Programmable	Number of I/O	Interface	Interrupt Output	Features	Output Type	Current - Output Source/Sink	Clock Frequency	Voltage - Supply	Operating Temperature	Grade	Qualification	Mounting Type	Supplier Device Package
PI4IOE5V9522UEX IC XPNDR 1MHZ I2C 8MSOP Diodes Incorporated	-	RFQ	Datasheet	-	8-TSSOP, 8-MSOP (0.118", 3.00mm Width) Exposed Pad	Tape & Reel (TR)	Obsolete	Not Verified	-	I2C	Yes	-	Open Drain	-	1 MHz	2.3V ~ 5.5V	-	-	-	Surface Mount	8-MSOP-EP
XRA1200IG16TR-F IC XPND 400KHZ I2C SMBUS 16TSSOP MaxLinear, Inc.	-	RFQ	Datasheet	-	16-TSSOP (0.173", 4.40mm Width)	Tape & Reel (TR)	Last Time Buy	Not Verified	8	I2C, SMBus	Yes	-	Open Drain	-	400 kHz	1.65V ~ 3.6V	-40°C ~ 85°C	-	-	Surface Mount	16-TSSOP
IS31IO7328-QFLS4-TR IC XPNDR 400KHZ I2C 16QFN Lumissil Microsystems	-	RFQ	Datasheet	-	16-WFQFN Exposed Pad	Tape & Reel (TR)	Active	Not Verified	4	I2C	Yes	POR	Open Drain	10mA, 20mA	400 kHz	2.4V ~ 5.5V	-40°C ~ 125°C	-	-	Surface Mount	16-QFN (3x3)
XRA1200PIG16TR-F IC XPND 400KHZ I2C SMBUS 16TSSOP MaxLinear, Inc.	-	RFQ	Datasheet	-	16-TSSOP (0.173", 4.40mm Width)	Tape & Reel (TR)	Last Time Buy	Not Verified	8	I2C, SMBus	Yes	-	Open Drain	-	400 kHz	1.65V ~ 3.6V	-40°C ~ 85°C	-	-	Surface Mount	16-TSSOP
IS31IO7325-QFLS4-TR IC XPNDR 400KHZ I2C SERIAL 24QFN Lumissil Microsystems	-	RFQ	Datasheet	-	24-WFQFN Exposed Pad	Tape & Reel (TR)	Active	Not Verified	8	I2C, Serial	Yes	POR	Open Drain	10mA, 20mA	400 kHz	2.4V ~ 5.5V	-40°C ~ 125°C	-	-	Surface Mount	24-QFN (4x4)
PCA9536DGKRG4 IC XPNDR 400KHZ I2C SMBUS 8VSSOP Texas Instruments	-	RFQ	Datasheet	-	8-TSSOP, 8-MSOP (0.118", 3.00mm Width)	Tape & Reel (TR)	Discontinued at Digi-Key	Not Verified	4	I2C, SMBus	No	POR	Push-Pull	10mA, 25mA	400 kHz	2.3V ~ 5.5V	-40°C ~ 85°C	-	-	Surface Mount	8-VSSOP
PCA9536DRG4 IC XPNDR 400KHZ I2C SMBUS 8SOIC Texas Instruments	-	RFQ	Datasheet	-	8-SOIC (0.154", 3.90mm Width)	Tape & Reel (TR)	Discontinued at Digi-Key	Not Verified	4	I2C, SMBus	No	POR	Push-Pull	10mA, 25mA	400 kHz	2.3V ~ 5.5V	-40°C ~ 85°C	-	-	Surface Mount	8-SOIC
PCF8574ANG4 IC XPNDR 100KHZ I2C 16DIP Texas Instruments	-	RFQ	Datasheet	-	16-DIP (0.300", 7.62mm)	Tube	Discontinued at Digi-Key	Not Verified	8	I2C	Yes	POR	Push-Pull	1mA, 25mA	100 kHz	2.5V ~ 6V	-40°C ~ 85°C	-	-	Through Hole	16-PDIP
XRA1201IL24TR-F IC XPNDR 400KHZ I2C SMBUS 24QFN MaxLinear, Inc.	-	RFQ	Datasheet	-	24-VFQFN Exposed Pad	Tape & Reel (TR)	Active	Not Verified	16	I2C, SMBus	Yes	-	Open Drain	-	400 kHz	1.65V ~ 3.6V	-40°C ~ 85°C	-	-	Surface Mount	24-QFN (4x4)
IS31IO7325-GRLS4 IC XPNDR 400KHZ I2C SERIAL 24SOP Lumissil Microsystems	-	RFQ	Datasheet	-	24-SOIC (0.295", 7.50mm Width)	Tube	Active	Not Verified	8	I2C, Serial	Yes	POR	Open Drain	20mA	400 kHz	2.4V ~ 5.5V	-40°C ~ 125°C	-	-	Surface Mount	24-SOP
PCA9554CBSHP IC XPND 400KHZ I2C SMBUS 16HVQFN NXP USA Inc.	-	RFQ	Datasheet	-	16-VFQFN Exposed Pad	Tape & Reel (TR)	Active	Not Verified	8	I2C, SMBus	Yes	POR	Push-Pull	10mA, 25mA	400 kHz	1.65V ~ 5.5V	-40°C ~ 85°C	-	-	Surface Mount	16-HVQFN (3x3)
XRA1203IG24TR-F IC XPND 400KHZ I2C SMBUS 24TSSOP MaxLinear, Inc.	-	RFQ	Datasheet	-	24-TSSOP (0.173", 4.40mm Width)	Tape & Reel (TR)	Active	Not Verified	16	I2C, SMBus	Yes	-	Open Drain	-	400 kHz	1.65V ~ 3.6V	-40°C ~ 85°C	-	-	Surface Mount	24-TSSOP
PCAL6408AEXX IC XPND 400KHZ I2C SMBUS 16XFBGA NXP USA Inc.	-	RFQ	Datasheet	Agile	16-XFBGA	Tape & Reel (TR)	Obsolete	Not Verified	8	I2C, SMBus	Yes	POR	Open Drain, Push-Pull	10mA, 25mA	400 kHz	1.65V ~ 5.5V	-40°C ~ 85°C	-	-	Surface Mount	16-XFBGA (1.6x1.6)
PI4IOE5V9673ZDEX IC XPNDR 400KHZ I2C 24TQFN Diodes Incorporated	-	RFQ	Datasheet	-	24-VFQFN Exposed Pad	Tape & Reel (TR)	Active	Not Verified	16	I2C	Yes	-	-	-	400 kHz	2.3V ~ 5.5V	-40°C ~ 85°C	-	-	Surface Mount	24-TQFN (4x4)
PCA9534PWRG4 IC XPND 400KHZ I2C SMBUS 16TSSOP Texas Instruments	-	RFQ	Datasheet	-	16-TSSOP (0.173", 4.40mm Width)	Tape & Reel (TR)	Discontinued at Digi-Key	Not Verified	8	I2C, SMBus	Yes	POR	Push-Pull	10mA, 25mA	400 kHz	2.3V ~ 5.5V	-40°C ~ 85°C	-	-	Surface Mount	16-TSSOP
PCA9554N,112 IC XPNDR 400KHZ I2C SMBUS 16DIP NXP USA Inc.	-	RFQ	Datasheet	-	16-DIP (0.300", 7.62mm)	Tube	Obsolete	Not Verified	8	I2C, SMBus	Yes	POR	Push-Pull	10mA, 25mA	400 kHz	2.3V ~ 5.5V	-40°C ~ 85°C	-	-	Through Hole	16-DIP
PCA9554AN,112 IC XPNDR 400KHZ I2C SMBUS 16DIP NXP USA Inc.	-	RFQ	Datasheet	-	16-DIP (0.300", 7.62mm)	Tube	Obsolete	Not Verified	8	I2C, SMBus	Yes	POR	Push-Pull	10mA, 25mA	400 kHz	2.3V ~ 5.5V	-40°C ~ 85°C	-	-	Through Hole	16-DIP
XRA1201IG24TR-F IC XPND 400KHZ I2C SMBUS 24TSSOP MaxLinear, Inc.	-	RFQ	Datasheet	-	24-TSSOP (0.173", 4.40mm Width)	Tape & Reel (TR)	Active	Not Verified	16	I2C, SMBus	Yes	-	-	-	400 kHz	1.65V ~ 3.6V	-40°C ~ 85°C	-	-	Surface Mount	24-TSSOP
PCA9674ATS,112 IC XPNDR 1MHZ I2C 20SSOP NXP USA Inc.	-	RFQ	Datasheet	-	20-LSSOP (0.173", 4.40mm Width)	Tube	Obsolete	Not Verified	8	I2C	Yes	POR	Push-Pull	100µA, 25mA	1 MHz	2.3V ~ 5.5V	-40°C ~ 85°C	-	-	Surface Mount	20-SSOP
PCA9674TS,112 IC XPNDR 1MHZ I2C 20SSOP NXP USA Inc.	-	RFQ	Datasheet	-	20-LSSOP (0.173", 4.40mm Width)	Tube	Obsolete	Not Verified	8	I2C	Yes	POR	Push-Pull	100µA, 25mA	1 MHz	2.3V ~ 5.5V	-40°C ~ 85°C	-	-	Surface Mount	20-SSOP

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