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IO Expanders

IO Expanders enable the expansion of input/output capabilities for microcontrollers, allowing for greater connectivity with peripherals. Key attributes include Clock Frequency, Current, and Interrupt Output, which are essential for ensuring compatibility and performance. These components are commonly used in new product design and prototyping.

1,100 active parts
33 manufacturers
29 distributors
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What are IO Expanders ?

IO Expanders are integrated circuits that increase the number of I/O ports available on a microcontroller, allowing for more devices to be connected. They are widely used in applications such as wireless and RF signal chains, production electronics assembly, and engineering evaluation. Important specifications include Clock Frequency, which affects data transfer rates; Current, which determines power consumption; and Output Type, which influences signal compatibility. It's crucial for procurement teams to validate lifecycle status and consider alternate-source options to mitigate sourcing risks.

Parts in this category

Compare stocked parts across manufacturers and distributors, then add lines to your RFQ.

Part & Mfr Total Stock Pricing & RFQ AEC Qualified Applications Clock Frequency Current EEPROM Size ESD Protection Features Halogen Free Industrial Grade Input Voltage Interface Interrupt Output Latch-up Performance Lead Spacing Lead Style Mounting Type Number of Channels Number of I Number of I/O Operating Temperature Operating Temperature Range Operating Voltage Output Current Output Type Output Voltage Package / Case Package Quantity Power Dissipation Storage Temperature Supplier Device Package Supplier Package Supply Current Supply Voltage Tape & Reel Voltage Voltage Supply
PCA9536TK,118
PCA9536TK,118
Download Datasheet for PCA9536TK,118
NXP Semiconductors
416,948
Across 3 distributors
Distributor Stock MOQ Country
Fe Components 6,000 - -
Risen Electronics 10,000 - -
Tomark Electronics Ltd 400,948 - -
Price on request
416,948
Distributor Stock MOQ Country
Fe Components 6,000 - -
Risen Electronics 10,000 - -
Tomark Electronics Ltd 400,948 - -
- - 400 kHz 10mA - 2000V HBM POR - - - I2C, SMBus No - - - Surface Mount - 4 - -40°C - - - Push-Pull - - - - - 8-HVSON (3x3) - - - - 2.3V -
PCF8574PW
PCF8574PW
Texas Instruments
264,357
Across 5 distributors
Distributor Stock MOQ Country
Components Technology Group, Inc. 3,600 - -
Romaks Technologies 51,657 - -
Optech Co.,Limited 202,000 - -
Xingangxin 5,000 - -
Smaxon Electronics 2,100 - -
Price on request
264,357
Distributor Stock MOQ Country
Components Technology Group, Inc. 3,600 - -
Romaks Technologies 51,657 - -
Optech Co.,Limited 202,000 - -
Xingangxin 5,000 - -
Smaxon Electronics 2,100 - -
- - 100 kHz 1mA, 25mA - - POR - - - I²C Yes - - - Surface Mount - 8 - -40°C to 85°C - - - Push-Pull - - - - - 20-TSSOP - - - Yes 2.5V to 6V -
TCA6408ARSVR
TCA6408ARSVR
Texas Instruments
225,486
Across 8 distributors
Distributor Stock MOQ Country
Fe Components 82 - -
Braun Electronic Components 45 - -
Romaks Technologies 200,000 - -
Optech Co.,Limited 2,399 - -
Eito Shoji 3,337 - -
Xingangxin 1,623 - -
Smaxon Electronics 6,000 - -
Mufeng Electronics 12,000 - -
Price on request
225,486
Distributor Stock MOQ Country
Fe Components 82 - -
Braun Electronic Components 45 - -
Romaks Technologies 200,000 - -
Optech Co.,Limited 2,399 - -
Eito Shoji 3,337 - -
Xingangxin 1,623 - -
Smaxon Electronics 6,000 - -
Mufeng Electronics 12,000 - -
- - 400 kHz 10mA - - POR - - - I2C, SMBus Yes - 2.6 mm - Surface Mount - 8 - -40°C - - - Push-Pull - - - - - 16-UQFN (2.6x1.8) 16-UQFN (2.6x1.8) - - - 1.65V -
PCAL6408APWJ
PCAL6408APWJ
Download Datasheet for PCAL6408APWJ
NXP Semiconductors
148,000
Across 2 distributors
Distributor Stock MOQ Country
Flip Electronics 145,000 - -
Risen Electronics 3,000 - -
Price on request
148,000
Distributor Stock MOQ Country
Flip Electronics 145,000 - -
Risen Electronics 3,000 - -
- - 400 kHz 10mA, 25mA - - POR - - - I²C, SMBus Yes - - - Surface Mount - 8 - -40°C ~ 85°C - - - Open Drain, Push-Pull - - - - - 16-TSSOP - - - - 1.65V ~ 5.5V -
PCA9557PWR
PCA9557PWR
Texas Instruments
129,966
Across 4 distributors
Distributor Stock MOQ Country
Romaks Technologies 120,533 - -
PROSOFT ELECTRONICS 1,884 - -
Xingangxin 6,987 - -
Smaxon Electronics 562 - -
Price on request
129,966
Distributor Stock MOQ Country
Romaks Technologies 120,533 - -
PROSOFT ELECTRONICS 1,884 - -
Xingangxin 6,987 - -
Smaxon Electronics 562 - -
- - 400 kHz 10mA, 25mA - - POR - - - I²C, SMBus No - 4.4 mm - Surface Mount - 8 - -40°C to 85°C - - - Open Drain, Push-Pull - - - - - 16-TSSOP - - - - 2.3V to 5.5V -
PCA9536DGKR
PCA9536DGKR
Texas Instruments
116,683
Across 6 distributors
Distributor Stock MOQ Country
Romaks Technologies 82,182 - -
Bristol Electronics 5 - -
Hybrid Electronics 39 - -
PROSOFT ELECTRONICS 403 - -
Xingangxin 3,147 - -
Smaxon Electronics 30,907 - -
Price on request
116,683
Distributor Stock MOQ Country
Romaks Technologies 82,182 - -
Bristol Electronics 5 - -
Hybrid Electronics 39 - -
PROSOFT ELECTRONICS 403 - -
Xingangxin 3,147 - -
Smaxon Electronics 30,907 - -
- - 0.4 MHz 10mA, 25mA - 2000V (HBM) POR; Configuration registers; Input and output configuration register; Polarity inversion register; Internal power-on reset; No glitch on power up; Power-up with all channels configured as inputs; Noise filter on SCL/SDA inputs; Latched outputs with high-current drive maximum capability for directly driving LEDs - - - I2C/SMBus No > 100 mA - Surface Mount Surface Mount - 4 - -40°C ~ 85°C - - - Push-Pull - - - - - 8-VSSOP - - - - 2.3V ~ 5.5V -
PCA9535RGER
PCA9535RGER
Texas Instruments
105,448
Across 6 distributors
Distributor Stock MOQ Country
Speed Components Ltd 5 - -
Romaks Technologies 95,158 - -
Hybrid Electronics 2 - -
Rayichip 3,000 - -
Xingangxin 6,216 - -
Smaxon Electronics 1,067 - -
Price on request
105,448
Distributor Stock MOQ Country
Speed Components Ltd 5 - -
Romaks Technologies 95,158 - -
Hybrid Electronics 2 - -
Rayichip 3,000 - -
Xingangxin 6,216 - -
Smaxon Electronics 1,067 - -
- - 400 kHz 10 mA / 25 mA - Exceeds JESD-22 POR - - - I2C, SMBus Yes >100 mA 4 mm - Surface Mount - 16 - -40°C - - - Push-Pull - - - - - 24-VQFN (4x4) 24-VQFN (4x4) - - - 2.3 V -
PCF8574ARGYR
PCF8574ARGYR
Texas Instruments
100,000
From Romaks Technologies
Distributor Stock MOQ Country
Romaks Technologies 100,000 - -
Price on request
100,000
Distributor Stock MOQ Country
Romaks Technologies 100,000 - -
- - 100 kHz 1mA, 25mA - - Open-drain - - - I2C Open-drain Exceeds 100 mA 3.5 mm - Surface Mount - 8 - -40°C ~ 85°C - - - Push-Pull - - - - -40°C ~ 85°C 20-VQFN (3.5x4.5) 20-VQFN (3.5x4.5) - - - 2.5V ~ 6V -
TCA9539PWR
TCA9539PWR
Texas Instruments
97,151
Across 5 distributors
Distributor Stock MOQ Country
Romaks Technologies 72,320 - -
Bristol Electronics 10 - -
Rayichip 10 - -
Xingangxin 6,251 - -
Smaxon Electronics 18,560 - -
Price on request
97,151
Distributor Stock MOQ Country
Romaks Technologies 72,320 - -
Bristol Electronics 10 - -
Rayichip 10 - -
Xingangxin 6,251 - -
Smaxon Electronics 18,560 - -
No - 400 kHz 10mA / 25mA - - POR - No - I2C, SMBus Yes - - - Surface Mount - 16 - -40°C / 85°C - - - Push-Pull - - - - - 24-TSSOP 24-TSSOP - - - 1.65V / 5.5V -
PCA9534RGVR
PCA9534RGVR
Texas Instruments
92,500
Across 3 distributors
Distributor Stock MOQ Country
Romaks Technologies 56,500 - -
Xingangxin 1,000 - -
Smaxon Electronics 35,000 - -
Price on request
92,500
Distributor Stock MOQ Country
Romaks Technologies 56,500 - -
Xingangxin 1,000 - -
Smaxon Electronics 35,000 - -
- - 400 kHz 10mA, 25mA - Exceeds JESD 22 POR; Configuration registers, Interrupt pin; Internal power-on reset; Power-up with all channels configured as inputs; No glitch on power up; Noise filter on SCL/SDA inputs; Latched outputs with high-current drive maximum capability for directly driving LEDs; Latch-up performance exceeds 100 mA Per JESD 78, class II - - - I2C, SMBus Open-drain active-low interrupt output - 4 mm - Surface Mount - 8 - -40°C ~ 85°C - - - Push-Pull - - - - - 16-VQFN (4x4) 16-VQFN (4x4) - - - 2.3V ~ 5.5V -
PCA9534DBR
PCA9534DBR
Texas Instruments
90,400
From Romaks Technologies
Distributor Stock MOQ Country
Romaks Technologies 90,400 - -
Price on request
90,400
Distributor Stock MOQ Country
Romaks Technologies 90,400 - -
- - 400 kHz 10mA, 25mA - - POR - - - I2C, SMBus Yes - - - Surface Mount - 8 - -40°C ~ 85°C - - - Push-Pull - - - - - 16-SSOP 16-SSOP - - - 2.3V ~ 5.5V -
TCA6408APWR
TCA6408APWR
Texas Instruments
86,271
Across 9 distributors
Distributor Stock MOQ Country
Fe Components 25,790 - -
Braun Electronic Components 28 - -
MW.FEP S.p.A. 1,273 - -
Romaks Technologies 45,200 - -
Rayichip 1,178 - -
Optech Co.,Limited 9,724 - -
PROSOFT ELECTRONICS 6 - -
Xingangxin 1,072 - -
Smaxon Electronics 2,000 - -
Price on request
86,271
Distributor Stock MOQ Country
Fe Components 25,790 - -
Braun Electronic Components 28 - -
MW.FEP S.p.A. 1,273 - -
Romaks Technologies 45,200 - -
Rayichip 1,178 - -
Optech Co.,Limited 9,724 - -
PROSOFT ELECTRONICS 6 - -
Xingangxin 1,072 - -
Smaxon Electronics 2,000 - -
- - 400 kHz 10mA - - POR - - - I2C, SMBus Yes - - - Surface Mount - 8 - -40°C - - - Push-Pull - - - - - 16-TSSOP 16-TSSOP - - - 1.65V -
PCF8574APWR
PCF8574APWR
Download Datasheet for PCF8574APWR
Texas Instruments
85,437
Across 5 distributors
Distributor Stock MOQ Country
Braun Electronic Components 30 - -
Romaks Technologies 60,267 - -
Optech Co.,Limited 7,383 - -
Xingangxin 6,251 - -
Smaxon Electronics 11,506 - -
Price on request
85,437
Distributor Stock MOQ Country
Braun Electronic Components 30 - -
Romaks Technologies 60,267 - -
Optech Co.,Limited 7,383 - -
Xingangxin 6,251 - -
Smaxon Electronics 11,506 - -
- - 100 kHz 1 mA - - POR - - - I²C Yes 100 mA 0.173 mm - Surface Mount - 8 - -40 °C - - - Push-Pull - - 2000 - - 20-TSSOP 20-TSSOP - - - 2.5 V -
TCA9535PWR
TCA9535PWR
Texas Instruments
85,071
Across 4 distributors
Distributor Stock MOQ Country
Romaks Technologies 54,788 - -
Optech Co.,Limited 27,000 - -
PROSOFT ELECTRONICS 1,489 - -
Xingangxin 1,794 - -
Price on request
85,071
Distributor Stock MOQ Country
Romaks Technologies 54,788 - -
Optech Co.,Limited 27,000 - -
PROSOFT ELECTRONICS 1,489 - -
Xingangxin 1,794 - -
No - 400 kHz 10mA, 25mA - - POR - No - I²C, SMBus Yes - - - Surface Mount - 16 - -40°C to 85°C - - - Push-Pull - - - - - 24-TSSOP 24-TSSOP (0.173", 4.40mm Width) - - - 1.65V to 5.5V -
TCA9555PWR
TCA9555PWR
Texas Instruments
79,025
Across 4 distributors
Distributor Stock MOQ Country
Romaks Technologies 61,288 - -
Rayichip 2,499 - -
Xingangxin 3,238 - -
Smaxon Electronics 12,000 - -
Price on request
79,025
Distributor Stock MOQ Country
Romaks Technologies 61,288 - -
Rayichip 2,499 - -
Xingangxin 3,238 - -
Smaxon Electronics 12,000 - -
- - 400 kHz 10mA, 25mA - - POR - - - I²C, SMBus Yes - - - Surface Mount - 16 - -40°C ~ 85°C - - - Push-Pull - - - - - 24-TSSOP - - - - 1.65V ~ 5.5V 1.65V ~ 5.5V
MCP23S08-E/SO
MCP23S08-E/SO
Download Datasheet for MCP23S08-E/SO
Microchip Technology
76,948
Across 6 distributors
Distributor Stock MOQ Country
Components Technology Group, Inc. 70,000 - -
Fe Components 1,520 - -
Braun Electronic Components 12 - -
Flip Electronics 406 - -
Risen Electronics 5,000 - -
Bristol Electronics 10 - -
Price on request
76,948
Distributor Stock MOQ Country
Components Technology Group, Inc. 70,000 - -
Fe Components 1,520 - -
Braun Electronic Components 12 - -
Flip Electronics 406 - -
Risen Electronics 5,000 - -
Bristol Electronics 10 - -
- - 10 MHz 25mA - - POR - - - SPI Yes - - Through Hole Surface Mount - 8 - -40°C to 125°C - - - Push-Pull - - - - - 18-SOIC 18-SOIC - - - 1.8V to 5.5V -
XRA1203IG24-F
XRA1203IG24-F
Maxlinear
75,000
From Flip Electronics
Distributor Stock MOQ Country
Flip Electronics 75,000 - -
Price on request
75,000
Distributor Stock MOQ Country
Flip Electronics 75,000 - -
- - 400 kHz - - - - - - - I2C, SMBus Yes - 4.4 mm - Surface Mount - 16 - -40°C ~ 85°C - - - Open Drain - - - - °C ~ °C 24-TSSOP - - - No 1.65V ~ 3.6V -
XRA1201PIG24TR-F
XRA1201PIG24TR-F
Maxlinear
75,000
From Flip Electronics
Distributor Stock MOQ Country
Flip Electronics 75,000 - -
Price on request
75,000
Distributor Stock MOQ Country
Flip Electronics 75,000 - -
- - 400 kHz - - - - - - - I²C, SMBus Yes - - Through Hole Surface Mount - 16 - -40°C ~ 85°C - - - Open Drain - - - - - 24-TSSOP - - - - 1.65V ~ 3.6V -
PCF8574DW
PCF8574DW
Texas Instruments
71,550
Across 4 distributors
Distributor Stock MOQ Country
Components Technology Group, Inc. 5,750 - -
Romaks Technologies 64,571 - -
Xingangxin 1,096 - -
Smaxon Electronics 133 - -
Price on request
71,550
Distributor Stock MOQ Country
Components Technology Group, Inc. 5,750 - -
Romaks Technologies 64,571 - -
Xingangxin 1,096 - -
Smaxon Electronics 133 - -
- - 0.1 MHz 1mA, 25mA - - POR - - - I²C Yes - - - Surface Mount - 8 - -40°C ~ 85°C - - - Push-Pull - - - - - 16-SOIC - - - - 2.5V ~ 6V -
PCF8574ADW
PCF8574ADW
Texas Instruments
71,199
Across 4 distributors
Distributor Stock MOQ Country
Components Technology Group, Inc. 5,500 - -
Romaks Technologies 60,267 - -
Bristol Electronics 17 - -
Xingangxin 5,415 - -
Price on request
71,199
Distributor Stock MOQ Country
Components Technology Group, Inc. 5,500 - -
Romaks Technologies 60,267 - -
Bristol Electronics 17 - -
Xingangxin 5,415 - -
- - 0.1 MHz 1 mA, 25 mA - - POR - - - I2C Yes - 7.5 mm - Surface Mount - 8 - -40°C to 85°C - - - Push-Pull - - - - - 16-SOIC 16-SOIC - - - 2.5 V to 6 V -
TCA6416APWR
TCA6416APWR
Texas Instruments
70,953
Across 6 distributors
Distributor Stock MOQ Country
Fe Components 10,000 - -
Braun Electronic Components 284 - -
Romaks Technologies 56,500 - -
Optech Co.,Limited 2,654 - -
PROSOFT ELECTRONICS 28 - -
Xingangxin 1,487 - -
Price on request
70,953
Distributor Stock MOQ Country
Fe Components 10,000 - -
Braun Electronic Components 284 - -
Romaks Technologies 56,500 - -
Optech Co.,Limited 2,654 - -
PROSOFT ELECTRONICS 28 - -
Xingangxin 1,487 - -
No - 400 kHz 10mA - - POR - No - I²C, SMBus Yes - 4.4 mm - Surface Mount - 16 - -40°C - - - Push-Pull - - - - - 24-TSSOP 24-TSSOP - - - 1.65V -
PCA9539PW,118
PCA9539PW,118
Download Datasheet for PCA9539PW,118
NXP Semiconductors
70,130
Across 4 distributors
Distributor Stock MOQ Country
Flip Electronics 65,000 - -
Bristol Electronics 12 - -
Optech Co.,Limited 4,500 - -
Husky International Electronic 618 - -
Price on request
70,130
Distributor Stock MOQ Country
Flip Electronics 65,000 - -
Bristol Electronics 12 - -
Optech Co.,Limited 4,500 - -
Husky International Electronic 618 - -
- - 400 kHz 10 mA, 25 mA - - POR - - - I²C, SMBus Yes - - - Surface Mount - 16 - -40°C ~ 85°C - - - Push-Pull - - - - - 24-TSSOP - - - - 2.3 V to 5.5 V -
PCA9534PWR
PCA9534PWR
Texas Instruments
65,844
Across 7 distributors
Distributor Stock MOQ Country
Components Technology Group, Inc. 8,777 - -
Braun Electronic Components 887 - -
MW.FEP S.p.A. 870 - -
Romaks Technologies 51,657 - -
PROSOFT ELECTRONICS 30 - -
Xingangxin 1,623 - -
Smaxon Electronics 2,000 - -
Price on request
65,844
Distributor Stock MOQ Country
Components Technology Group, Inc. 8,777 - -
Braun Electronic Components 887 - -
MW.FEP S.p.A. 870 - -
Romaks Technologies 51,657 - -
PROSOFT ELECTRONICS 30 - -
Xingangxin 1,623 - -
Smaxon Electronics 2,000 - -
- - 400 kHz 10mA, 25mA - - POR - - - I²C, SMBus Yes - - - Surface Mount - 8 - -40°C ~ 85°C - - - Push-Pull - - - - - 16-TSSOP - - - - 2.3V to 5.5V -
PCA9554ARGTR
PCA9554ARGTR
Download Datasheet for PCA9554ARGTR
Texas Instruments
59,657
Across 3 distributors
Distributor Stock MOQ Country
Romaks Technologies 51,657 - -
Xingangxin 5,000 - -
Smaxon Electronics 3,000 - -
Price on request
59,657
Distributor Stock MOQ Country
Romaks Technologies 51,657 - -
Xingangxin 5,000 - -
Smaxon Electronics 3,000 - -
- - 400 kHz 10 mA, 25 mA - - POR - - - I²C, SMBus Yes Exceeds 100 mA - - Surface Mount - 8 - -40°C ~ 85°C - - - Push-Pull - - - - - 16-VQFN (3x3) 16-VQFN (3x3) - - - 2.3 V to 5.5 V -
TCA9555DBR
TCA9555DBR
Texas Instruments
58,460
Across 5 distributors
Distributor Stock MOQ Country
Romaks Technologies 45,200 - -
Bristol Electronics 90 - -
Optech Co.,Limited 9,729 - -
Xingangxin 2,505 - -
Smaxon Electronics 936 - -
Price on request
58,460
Distributor Stock MOQ Country
Romaks Technologies 45,200 - -
Bristol Electronics 90 - -
Optech Co.,Limited 9,729 - -
Xingangxin 2,505 - -
Smaxon Electronics 936 - -
No - 400 kHz 10mA - - POR - No - I²C, SMBus Yes - - - Surface Mount - 16 - -40°C - - - Push-Pull - - - - - 24-SSOP 24-SSOP - - - 1.65V -
PCF8574ADWR
PCF8574ADWR
Download Datasheet for PCF8574ADWR
Texas Instruments
58,021
Across 4 distributors
Distributor Stock MOQ Country
MW.FEP S.p.A. 10 - -
Romaks Technologies 56,500 - -
Xingangxin 1,340 - -
Smaxon Electronics 171 - -
Price on request
58,021
Distributor Stock MOQ Country
MW.FEP S.p.A. 10 - -
Romaks Technologies 56,500 - -
Xingangxin 1,340 - -
Smaxon Electronics 171 - -
No - 100 kHz 1mA, 25mA - - POR - No - I²C Yes - - - Surface Mount - 8 - -40°C ~ 85°C - - - Push-Pull - - - - - 16-SOIC - - - - 2.5V to 6V -
PCA9538PWR
PCA9538PWR
Texas Instruments
55,929
Across 4 distributors
Distributor Stock MOQ Country
MW.FEP S.p.A. 130 - -
Romaks Technologies 53,176 - -
Xingangxin 2,292 - -
Smaxon Electronics 331 - -
Price on request
55,929
Distributor Stock MOQ Country
MW.FEP S.p.A. 130 - -
Romaks Technologies 53,176 - -
Xingangxin 2,292 - -
Smaxon Electronics 331 - -
- - 400 kHz 10mA, 25mA - - POR - - - I²C, SMBus Yes - - - Surface Mount - 8 8 -40°C to 85°C - - - Push-Pull - - - - - 16-TSSOP - - - - 2.3V ~ 5.5V -
TCA9539QPWRQ1
TCA9539QPWRQ1
Texas Instruments
53,547
Across 3 distributors
Distributor Stock MOQ Country
Speed Components Ltd 16 - -
Romaks Technologies 51,657 - -
Xingangxin 1,874 - -
Price on request
53,547
Distributor Stock MOQ Country
Speed Components Ltd 16 - -
Romaks Technologies 51,657 - -
Xingangxin 1,874 - -
- - 400 kHz 10mA, 25mA - - Configuration registers, Interrupt pin, Reset pin - - - I²C, SMBus Yes - - - Surface Mount - 16 - -40°C ~ 125°C - - - Push-Pull - - - - - 24-TSSOP - - - - 1.65V ~ 3.6V -
PCA6408APW,118
PCA6408APW,118
Download Datasheet for PCA6408APW,118
NXP Semiconductors
52,577
Across 3 distributors
Distributor Stock MOQ Country
Fe Components 2,500 - -
MW.FEP S.p.A. 77 - -
Risen Electronics 50,000 - -
Price on request
52,577
Distributor Stock MOQ Country
Fe Components 2,500 - -
MW.FEP S.p.A. 77 - -
Risen Electronics 50,000 - -
- - 400 kHz 10mA, 25mA - - POR - - - I²C, SMBus Yes - 4.4 mm - Surface Mount - 8 - -40°C to 85°C - - - Push-Pull - - - - - 16-TSSOP - - - - 1.65V to 5.5V -
TCA9535RGER
TCA9535RGER
Texas Instruments
52,513
Across 5 distributors
Distributor Stock MOQ Country
Braun Electronic Components 386 - -
MW.FEP S.p.A. 397 - -
Romaks Technologies 50,000 - -
PROSOFT ELECTRONICS 12 - -
Xingangxin 1,718 - -
Price on request
52,513
Distributor Stock MOQ Country
Braun Electronic Components 386 - -
MW.FEP S.p.A. 397 - -
Romaks Technologies 50,000 - -
PROSOFT ELECTRONICS 12 - -
Xingangxin 1,718 - -
- - 400 kHz 10mA, 25mA - - POR - - - I2C, SMBus Yes - - - Surface Mount - 16 - -40°C ~ 85°C - - - Push-Pull - - - - - 24-VQFN (4x4) - - - - 1.65V ~ 5.5V -
PCA9536DRG4
PCA9536DRG4
Texas Instruments
51,657
From Romaks Technologies
Distributor Stock MOQ Country
Romaks Technologies 51,657 - -
Price on request
51,657
Distributor Stock MOQ Country
Romaks Technologies 51,657 - -
- - 400 kHz 10mA, 25mA - - POR - - - I2C, SMBus No - 3.9 mm - Surface Mount - 4 - -40°C ~ 85°C - - - Push-Pull - - - - - 8-SOIC - - - - 2.3V to 5.5V -
PCA9534APWR
PCA9534APWR
Texas Instruments
50,008
Across 5 distributors
Distributor Stock MOQ Country
MW.FEP S.p.A. 170 - -
Romaks Technologies 36,160 - -
Bristol Electronics 1,163 - -
Optech Co.,Limited 9,602 - -
Smaxon Electronics 2,913 - -
Price on request
50,008
Distributor Stock MOQ Country
MW.FEP S.p.A. 170 - -
Romaks Technologies 36,160 - -
Bristol Electronics 1,163 - -
Optech Co.,Limited 9,602 - -
Smaxon Electronics 2,913 - -
- - 400kHz 10mA - - POR - - - I²C, SMBus Yes - - - Surface Mount - 8 - -40°C - - - Push-Pull - - - - - 16-TSSOP 16-TSSOP - - - 2.3V -
PCF8575CDBQR
PCF8575CDBQR
Texas Instruments
49,882
Across 2 distributors
Distributor Stock MOQ Country
Romaks Technologies 45,200 - -
Smaxon Electronics 4,682 - -
Price on request
49,882
Distributor Stock MOQ Country
Romaks Technologies 45,200 - -
Smaxon Electronics 4,682 - -
No - 400 kHz 10mA, 25mA - - POR - No - I2C, SMBus Yes - 3.9 mm - Surface Mount - 16 - -40°C ~ 85°C - - - Open Drain - - - - - 24-SSOP - - - - 4.5V ~ 5.5V -
MAX7301AAI
MAX7301AAI
Download Datasheet for MAX7301AAI
Analog Devices / Maxim Integrated
48,700
Across 2 distributors
Distributor Stock MOQ Country
Components Technology Group, Inc. 3,500 - -
Romaks Technologies 45,200 - -
Price on request
48,700
Distributor Stock MOQ Country
Components Technology Group, Inc. 3,500 - -
Romaks Technologies 45,200 - -
- - 26 MHz 4.5mA, 10mA - - - - - - SPI Yes - 5.30 mm - Surface Mount - 28 - -40°C ~ 125°C - - - Push-Pull - - - - - 28-SSOP 28-SSOP - - No 2.5V ~ 5.5V -
PCA9539DWR
PCA9539DWR
Texas Instruments
48,450
Across 2 distributors
Distributor Stock MOQ Country
Flip Electronics 8,272 - -
Romaks Technologies 40,178 - -
Price on request
48,450
Distributor Stock MOQ Country
Flip Electronics 8,272 - -
Romaks Technologies 40,178 - -
- - 400 kHz 10mA, 25mA - - POR - - - I2C, SMBus Yes - 0.295 mm - Surface Mount - 16 - -40°C ~ 85°C - - - Push-Pull - - - - - 24-SOIC 24-SOIC - - - 2.3V ~ 5.5V -
TCA9535RTWR
TCA9535RTWR
Download Datasheet for TCA9535RTWR
Texas Instruments
46,786
Across 5 distributors
Distributor Stock MOQ Country
Braun Electronic Components 244 - -
MW.FEP S.p.A. 42 - -
Romaks Technologies 45,200 - -
RAD 244 - -
Xingangxin 1,056 - -
Price on request
46,786
Distributor Stock MOQ Country
Braun Electronic Components 244 - -
MW.FEP S.p.A. 42 - -
Romaks Technologies 45,200 - -
RAD 244 - -
Xingangxin 1,056 - -
- - 400 kHz 10mA, 25mA - 2000-V HBM, 1000-V CDM POR - - - I2C, SMBus Yes Exceeds 100 mA 4 mm - Surface Mount - 16 - -40°C ~ 85°C - - - Push-Pull - - - - - 24-WQFN (4x4) 24-WQFN (4x4) - - - 1.65V ~ 5.5V -
PCA9557RGVR
PCA9557RGVR
Texas Instruments
45,300
Across 2 distributors
Distributor Stock MOQ Country
MW.FEP S.p.A. 100 - -
Romaks Technologies 45,200 - -
Price on request
45,300
Distributor Stock MOQ Country
MW.FEP S.p.A. 100 - -
Romaks Technologies 45,200 - -
- - 400 kHz 10mA, 25mA - - POR - - - I²C, SMBus No - - - Surface Mount - 8 - -40°C ~ 85°C - - - Open Drain, Push-Pull - - 2500 - - 16-VQFN (4x4) - - - - 2.3V ~ 5.5V -
TCA7408ZSZR
TCA7408ZSZR
Download Datasheet for TCA7408ZSZR
Texas Instruments
45,258
Across 3 distributors
Distributor Stock MOQ Country
Braun Electronic Components 2,110 - -
Romaks Technologies 43,048 - -
Optech Co.,Limited 100 - -
Price on request
45,258
Distributor Stock MOQ Country
Braun Electronic Components 2,110 - -
Romaks Technologies 43,048 - -
Optech Co.,Limited 100 - -
- - 400 kHz 10 mA - 2000V HBM, 1000V CDM POR - - - I2C, SMBus Yes - 2.0 mm - Surface Mount - 8 - -40°C to 85°C - - - Push-Pull - - - - - 16-UCSP (2x2) - - - - 1.65V to 3.6V -
PCA9555RGER
PCA9555RGER
Texas Instruments
45,205
Across 5 distributors
Distributor Stock MOQ Country
Romaks Technologies 36,160 - -
Bristol Electronics 150 - -
Optech Co.,Limited 3,633 - -
Xingangxin 1,463 - -
Smaxon Electronics 3,799 - -
Price on request
45,205
Distributor Stock MOQ Country
Romaks Technologies 36,160 - -
Bristol Electronics 150 - -
Optech Co.,Limited 3,633 - -
Xingangxin 1,463 - -
Smaxon Electronics 3,799 - -
- - 400 kHz 10mA, 25mA - - POR - - - I2C, SMBus Yes Exceeds 100 mA Per JESD 78, Class II - - Surface Mount - 16 - -40°C ~ 85°C - - - Push-Pull - - - - - 24-VQFN (4x4) 24-VQFN (4x4) - - - 2.3V ~ 5.5V -
PCA9555DB
PCA9555DB
Texas Instruments
45,200
From Romaks Technologies
Distributor Stock MOQ Country
Romaks Technologies 45,200 - -
Price on request
45,200
Distributor Stock MOQ Country
Romaks Technologies 45,200 - -
- - 400 kHz 10mA, 25mA - - POR - - - I²C, SMBus Yes - 5.30 mm - Surface Mount - 16 - -40°C ~ 85°C - - - Push-Pull - - - - - 24-SSOP - - - No 2.3V ~ 5.5V -
PCA9534ARGVR
PCA9534ARGVR
Texas Instruments
45,200
From Romaks Technologies
Distributor Stock MOQ Country
Romaks Technologies 45,200 - -
Price on request
45,200
Distributor Stock MOQ Country
Romaks Technologies 45,200 - -
- - 400 kHz 10mA, 25mA - - POR - - - I²C, SMBus Yes - 4 mm - Surface Mount - 8 - -40°C to 85°C - - - Push-Pull - - - - - 16-VQFN (4x4) 16-VQFN (4x4) - - - 2.3V to 5.5V -
MAX7310ATE+T
MAX7310ATE+T
Download Datasheet for MAX7310ATE+T
Analog Devices / Maxim Integrated
45,080
Across 2 distributors
Distributor Stock MOQ Country
Tomark Electronics Ltd 8,920 - -
Romaks Technologies 36,160 - -
Price on request
45,080
Distributor Stock MOQ Country
Tomark Electronics Ltd 8,920 - -
Romaks Technologies 36,160 - -
- - 400 kHz 18mA, 30mA - - POR - - - I2C, SMBus No - 4 mm - Surface Mount - 8 - -40°C ~ 125°C - - - Open Drain, Push-Pull - - - - - 16-TQFN (4x4) - - - - 2.3V ~ 5.5V -
PI4IOE5V6408ZTAEX
PI4IOE5V6408ZTAEX
Download Datasheet for PI4IOE5V6408ZTAEX
Diodes Incorporated
45,000
From Seba Components
Distributor Stock MOQ Country
Seba Components 45,000 - -
Price on request
45,000
Distributor Stock MOQ Country
Seba Components 45,000 - -
- - 1 MHz - - - - Halogen and Antimony Free - - I2C Yes - 1.8 mm - Surface Mount - 8 - -40°C to 85°C - - - Push-Pull - - - - - 16-UQFN (1.8x2.6) - - - - 1.65V ~ 3.6V -
MCP23S08-E/SS
MCP23S08-E/SS
Download Datasheet for MCP23S08-E/SS
Microchip Technology
44,000
Across 4 distributors
Distributor Stock MOQ Country
Components Technology Group, Inc. 25,000 - -
Risen Electronics 4,000 - -
Tomark Electronics Ltd 4,000 - -
Smaxon Electronics 11,000 - -
Price on request
44,000
Distributor Stock MOQ Country
Components Technology Group, Inc. 25,000 - -
Risen Electronics 4,000 - -
Tomark Electronics Ltd 4,000 - -
Smaxon Electronics 11,000 - -
No - 10 MHz 25mA - - POR - No - SPI Yes - 5.3 mm - Surface Mount - 8 - -40°C ~ 125°C - - - Push-Pull - - - - - 20-SSOP - - - No 1.8V ~ 5.5V -
MAX7318AAG+
MAX7318AAG+
Download Datasheet for MAX7318AAG+
Analog Devices / Maxim Integrated
43,566
From Romaks Technologies
Distributor Stock MOQ Country
Romaks Technologies 43,566 - -
Price on request
43,566
Distributor Stock MOQ Country
Romaks Technologies 43,566 - -
- - 400 kHz 31mA, 43mA - - POR - - - I2C, SMBus Yes - 0.209 mm Through-Hole Surface Mount - 16 - -40°C ~ 125°C - - - Push-Pull - - - - - 24-SSOP - - - - 2V ~ 5.5V -
TCA6408AQPWRQ1
TCA6408AQPWRQ1
Texas Instruments
42,387
Across 3 distributors
Distributor Stock MOQ Country
MW.FEP S.p.A. 11 - -
Romaks Technologies 36,160 - -
Xingangxin 6,216 - -
Price on request
42,387
Distributor Stock MOQ Country
MW.FEP S.p.A. 11 - -
Romaks Technologies 36,160 - -
Xingangxin 6,216 - -
- - 400 kHz 10mA, 25mA - - POR; Adjustable I/O level, Configuration registers, Interrupt pin, Reset pin - - - I2C, SMBus Yes - 4.4 mm - Surface Mount - 8 - -40°C ~ 125°C - - - Push-Pull - - - - - 16-TSSOP 16-TSSOP - - - 1.65V ~ 3.6V -
SX1508BIULTRT
SX1508BIULTRT
Download Datasheet for SX1508BIULTRT
Semtech
39,439
Across 5 distributors
Distributor Stock MOQ Country
Risen Electronics 10,000 - -
Speed Components Ltd 50 - -
Optech Co.,Limited 11,300 - -
Xingangxin 3,147 - -
Smaxon Electronics 14,942 - -
Price on request
39,439
Distributor Stock MOQ Country
Risen Electronics 10,000 - -
Speed Components Ltd 50 - -
Optech Co.,Limited 11,300 - -
Xingangxin 3,147 - -
Smaxon Electronics 14,942 - -
- - 400 kHz - - - POR - - - I2C Yes - 3 mm - Surface Mount - 8 - -40°C ~ 85°C - - - Open Drain, Push-Pull - - - - - 20-QFN-UT (3x3) 20-QFN-UT (3x3) - - - 1.2V ~ 3.6V -
PCAL6416AER
PCAL6416AER
NXP Semiconductors
39,200
From Smaxon Electronics
Distributor Stock MOQ Country
Smaxon Electronics 39,200 - -
Price on request
39,200
Distributor Stock MOQ Country
Smaxon Electronics 39,200 - -
- - - - - - - - - - - - - - - - - - - - - 3.3V - - - 24-UFBGA - - °C ~ °C - - - - No - -
PCA6107DW
PCA6107DW
Texas Instruments
38,160
Across 2 distributors
Distributor Stock MOQ Country
Components Technology Group, Inc. 2,000 - -
Romaks Technologies 36,160 - -
Price on request
38,160
Distributor Stock MOQ Country
Components Technology Group, Inc. 2,000 - -
Romaks Technologies 36,160 - -
- - 400 kHz 10mA, 25mA - - POR - - - I²C, SMBus Yes - - - Surface Mount - 8 - -40°C ~ 85°C - - - Open Drain, Push-Pull - - - - - 18-SOIC - - - - 2.3V ~ 5.5V -
PCAL6416AHF,128
PCAL6416AHF,128
Download Datasheet for PCAL6416AHF,128
NXP Semiconductors
37,885
Across 5 distributors
Distributor Stock MOQ Country
Braun Electronic Components 4,375 - -
MW.FEP S.p.A. 4,757 - -
Risen Electronics 20,000 - -
Speed Components Ltd 500 - -
Optech Co.,Limited 8,253 - -
Price on request
37,885
Distributor Stock MOQ Country
Braun Electronic Components 4,375 - -
MW.FEP S.p.A. 4,757 - -
Risen Electronics 20,000 - -
Speed Components Ltd 500 - -
Optech Co.,Limited 8,253 - -
- - 400 kHz 10mA, 25mA - - POR - - - I2C, SMBus Yes - 4 mm - Surface Mount - 16 - -40°C ~ 85°C - - - Open Drain, Push-Pull - - - - - 24-HWQFN (4x4) 24-HWQFN (4x4) - - - 1.65V ~ 5.5V -
Showing 1-50 of 1,100 products

About IO Expanders

IO Expanders are essential components in electronic systems, allowing for the expansion of input/output capabilities in integrated circuits. These devices are particularly useful in applications where additional I/O ports are required beyond what is available on a microcontroller or processor.

When sourcing IO Expanders, it is crucial to consider important attributes such as clock frequency, current ratings, and the specific features that meet your design requirements. Understanding the interface type and interrupt output capabilities can significantly impact the performance of your application.

IO Expanders find applications in wireless and RF signal chains, new product design and prototyping, as well as in production electronics assembly. They are also vital for maintenance and field replacement, ensuring that systems remain operational with minimal downtime.

Before submitting a Request for Quotation (RFQ), buyers should validate the lifecycle status of the components and explore alternate-source options to mitigate sourcing risks. It is advisable to prioritize parametric filtering based on critical specifications rather than brand preference to ensure compatibility with existing design constraints.

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