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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 AEC Qualified Automotive Grade Clock Frequency Current ESD Protection Features Frequency Halogen Free Industrial Grade Interface Interrupt Output Latch-up Performance Lead Spacing Lead Style Medical Grade Military Grade Mounting Type Number of I Number of I/O Operating Temperature Operating Voltage Output Type Package / Case Package Quantity Programmable Storage Temperature Supplier Device Package Supplier Package Tape & Reel Voltage Voltage Supply
Product image for PCA9536TK,118 by NXP Semiconductors
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 - -
$1.15
 - - 400 kHz 10mA 2000V HBM POR - - - I2C, SMBus No - - - - - Surface Mount 4 - -40°C - Push-Pull - - - - 8-HVSON (3x3) - - 2.3V -
Product image for PCF8574PW by Texas Instruments
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 - -
$1.15
 - - 100 kHz 1mA, 25mA - POR - - - I²C Yes - - - - - Surface Mount 8 - -40°C to 85°C - Push-Pull - - - - 20-TSSOP - Yes 2.5V to 6V -
Product image for TCA6408ARSVR by Texas Instruments
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 - -
$0.29
 - - 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 -
Product image for STMPE801QTR by STMicroelectronics
STMPE801QTR
STMicroelectronics
153,066
Across 2 distributors
Distributor Stock MOQ Country
Romaks Technologies 90,400 - -
Smaxon Electronics 62,666 - -
Price on request
 - - 400 kHz - - POR - - - I2C Yes - - - - - Surface Mount 8 8 -40 °C / 85 °C - Push-Pull - - Not Verified - 16-QFN (2.6x1.8) - - 1.65V ~ 3.6V -
Product image for PCAL6408APWJ by NXP Semiconductors
PCAL6408APWJ
Download Datasheet for PCAL6408APWJ
NXP Semiconductors
148,000
Across 2 distributors
Distributor Stock MOQ Country
Flip Electronics 145,000 - -
Risen Electronics 3,000 - -
$1.15
 - - 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 -
Product image for PCA9557PWR by Texas Instruments
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 - -
$0.73
 - - 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 -
Product image for PCA9536DGKR by Texas Instruments
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 - -
$0.54
 - - 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 -
Product image for PCA9535RGER by Texas Instruments
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 - -
$0.75
 - - 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 -
Product image for PCF8574ARGYR by Texas Instruments
PCF8574ARGYR
Texas Instruments
100,000
From Romaks Technologies
Distributor Stock MOQ Country
Romaks Technologies 100,000 - -
$0.94
 - - 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 -
Product image for TCA9539PWR by Texas Instruments
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 - -
$0.60
 No No 400 kHz 10mA / 25mA - POR - - No I2C, SMBus Yes - - - No No Surface Mount 16 - -40°C / 85°C - Push-Pull - - - - 24-TSSOP 24-TSSOP - 1.65V / 5.5V -
Product image for PCA9534RGVR by Texas Instruments
PCA9534RGVR
Texas Instruments
92,500
Across 3 distributors
Distributor Stock MOQ Country
Romaks Technologies 56,500 - -
Xingangxin 1,000 - -
Smaxon Electronics 35,000 - -
$0.77
 - - 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 -
Product image for PCA9534DBR by Texas Instruments
PCA9534DBR
Texas Instruments
90,400
From Romaks Technologies
Distributor Stock MOQ Country
Romaks Technologies 90,400 - -
$1.74
 - - 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 -
Product image for TCA6408APWR by Texas Instruments
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 - -
$0.55
 - - 400 kHz 10mA - POR - - - I2C, SMBus Yes - - - - - Surface Mount 8 - -40°C - Push-Pull - - - - 16-TSSOP 16-TSSOP - 1.65V -
Product image for PCF8574APWR by Texas Instruments
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 - -
$0.55
 - - 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 -
Product image for TCA9535PWR by Texas Instruments
TCA9535PWR
Texas Instruments
85,071
Across 5 distributors
Distributor Stock MOQ Country
Romaks Technologies 54,788 - -
Optech Co.,Limited 27,000 - -
PROSOFT ELECTRONICS 1,489 - -
Xingangxin 1,794 - -
HK XINYUANXIN ELECTRONIC TECH LIMITED Stock on Request - -
$0.67
 No No 400 kHz 10mA, 25mA - POR - - No I²C, SMBus Yes - - - No No Surface Mount 16 - -40°C to 85°C - Push-Pull - - - - 24-TSSOP 24-TSSOP (0.173", 4.40mm Width) - 1.65V to 5.5V -
Product image for TCA9555PWR by Texas Instruments
TCA9555PWR
Texas Instruments
79,025
Across 5 distributors
Distributor Stock MOQ Country
Romaks Technologies 61,288 - -
Rayichip 2,499 - -
Xingangxin 3,238 - -
Smaxon Electronics 12,000 - -
HK XINYUANXIN ELECTRONIC TECH LIMITED Stock on Request - -
$1.15
 - - 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
Product image for MCP23S08-E/SO by Microchip Technology
MCP23S08-E/SO
Download Datasheet for MCP23S08-E/SO
Microchip Technology
76,948
Across 7 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 - -
HK XINYUANXIN ELECTRONIC TECH LIMITED Stock on Request - -
$1.15
 - - 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 -
Product image for XRA1201PIG24TR-F by Maxlinear
XRA1201PIG24TR-F
Maxlinear
75,000
From Flip Electronics
Distributor Stock MOQ Country
Flip Electronics 75,000 - -
$1.15
 - - 400 kHz - - - - - - I²C, SMBus Yes - - Through Hole - - Surface Mount 16 - -40°C ~ 85°C - Open Drain - - - - 24-TSSOP - - 1.65V ~ 3.6V -
Product image for XRA1203IG24-F by Maxlinear
XRA1203IG24-F
Maxlinear
75,000
From Flip Electronics
Distributor Stock MOQ Country
Flip Electronics 75,000 - -
$1.15
 - - 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 -
Product image for PCF8574DW by Texas Instruments
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 - -
$1.17
 - - 0.1 MHz 1mA, 25mA - POR - - - I²C Yes - - - - - Surface Mount 8 - -40°C ~ 85°C - Push-Pull - - - - 16-SOIC - - 2.5V ~ 6V -
Product image for PCF8574ADW by Texas Instruments
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 - -
$1.15
 - - 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 -
Product image for TCA6416APWR by Texas Instruments
TCA6416APWR
Texas Instruments
70,953
Across 7 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 - -
HK XINYUANXIN ELECTRONIC TECH LIMITED Stock on Request - -
$0.64
 No No 400 kHz 10mA - POR - - No I²C, SMBus Yes - 4.4 mm - No No Surface Mount 16 - -40°C - Push-Pull - - - - 24-TSSOP 24-TSSOP - 1.65V -
Product image for PCA9539PW,118 by NXP Semiconductors
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 - -
$1.15
 - - 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 -
Product image for PCA9534PWR by Texas Instruments
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 - -
$0.61
 - - 400 kHz 10mA, 25mA - POR - - - I²C, SMBus Yes - - - - - Surface Mount 8 - -40°C ~ 85°C - Push-Pull - - - - 16-TSSOP - - 2.3V to 5.5V -
Product image for PCA9554ARGTR by Texas Instruments
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 - -
$0.58
 - - 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 -
Product image for TCA9555DBR by Texas Instruments
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 - -
$0.70
 No No 400 kHz 10mA - POR - - No I²C, SMBus Yes - - - No No Surface Mount 16 - -40°C - Push-Pull - - - - 24-SSOP 24-SSOP - 1.65V -
Product image for PCF8574ADWR by Texas Instruments
PCF8574ADWR
Download Datasheet for PCF8574ADWR
Texas Instruments
58,021
Across 5 distributors
Distributor Stock MOQ Country
MW.FEP S.p.A. 10 - -
Romaks Technologies 56,500 - -
Xingangxin 1,340 - -
Smaxon Electronics 171 - -
HK XINYUANXIN ELECTRONIC TECH LIMITED Stock on Request - -
$0.55
 No No 100 kHz 1mA, 25mA - POR - - No I²C Yes - - - No No Surface Mount 8 - -40°C ~ 85°C - Push-Pull - - - - 16-SOIC - - 2.5V to 6V -
Product image for PCA9538PWR by Texas Instruments
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 - -
$0.72
 - - 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 -
Product image for TCA9539QPWRQ1 by Texas Instruments
TCA9539QPWRQ1
Texas Instruments
53,631
Across 4 distributors
Distributor Stock MOQ Country
Speed Components Ltd 100 - -
Romaks Technologies 51,657 - -
Xingangxin 1,874 - -
HK XINYUANXIN ELECTRONIC TECH LIMITED Stock on Request - -
$1.15
 - - 400 kHz 10mA, 25mA - Configuration registers, Interrupt pin, Reset pin 0.4MHz - - I²C, SMBus Yes - - - - - Surface Mount 16 - -40°C ~ 125°C - Push-Pull - - - - 24-TSSOP - - 1.65V ~ 3.6V -
Product image for PCA6408APW,118 by NXP Semiconductors
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 - -
$1.15
 - - 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 -
Product image for TCA9535RGER by Texas Instruments
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 - -
$1.15
 - - 400 kHz 10mA, 25mA - POR - - - I2C, SMBus Yes - - - - - Surface Mount 16 - -40°C ~ 85°C - Push-Pull - - - - 24-VQFN (4x4) - - 1.65V ~ 5.5V -
Product image for PCA9536DRG4 by Texas Instruments
PCA9536DRG4
Texas Instruments
51,657
From Romaks Technologies
Distributor Stock MOQ Country
Romaks Technologies 51,657 - -
$1.15
 - - 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 -
Product image for PCA9534APWR by Texas Instruments
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 - -
$0.77
 - - 400kHz 10mA - POR - - - I²C, SMBus Yes - - - - - Surface Mount 8 - -40°C - Push-Pull - - - - 16-TSSOP 16-TSSOP - 2.3V -
Product image for PCF8575CDBQR by Texas Instruments
PCF8575CDBQR
Texas Instruments
49,882
Across 2 distributors
Distributor Stock MOQ Country
Romaks Technologies 45,200 - -
Smaxon Electronics 4,682 - -
$2.60
 No No 400 kHz 10mA, 25mA - POR - - No I2C, SMBus Yes - 3.9 mm - No No Surface Mount 16 - -40°C ~ 85°C - Open Drain - - - - 24-SSOP - - 4.5V ~ 5.5V -
Product image for MAX7301AAI by Analog Devices / Maxim Integrated
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 - -
$1.15
 - - 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 -
Product image for PCA9539DWR by Texas Instruments
PCA9539DWR
Texas Instruments
48,450
Across 2 distributors
Distributor Stock MOQ Country
Flip Electronics 8,272 - -
Romaks Technologies 40,178 - -
$1.59
 - - 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 -
Product image for TCA9535RTWR by Texas Instruments
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 - -
$0.58
 - - 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 -
Product image for PCA9557RGVR by Texas Instruments
PCA9557RGVR
Texas Instruments
45,300
Across 2 distributors
Distributor Stock MOQ Country
MW.FEP S.p.A. 100 - -
Romaks Technologies 45,200 - -
$0.70
 - - 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 -
Product image for TCA7408ZSZR by Texas Instruments
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 - -
$1.15
 - - 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 -
Product image for PCA9555RGER by Texas Instruments
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 - -
$0.85
 - - 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 -
Product image for PCA9534ARGVR by Texas Instruments
PCA9534ARGVR
Texas Instruments
45,200
From Romaks Technologies
Distributor Stock MOQ Country
Romaks Technologies 45,200 - -
$1.46
 - - 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 -
Product image for PCA9555DB by Texas Instruments
PCA9555DB
Texas Instruments
45,200
From Romaks Technologies
Distributor Stock MOQ Country
Romaks Technologies 45,200 - -
$1.15
 - - 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 -
Product image for MAX7310ATE+T by Analog Devices / Maxim Integrated
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 - -
$1.15
 - - 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 -
Product image for PI4IOE5V6408ZTAEX by Diodes Incorporated
PI4IOE5V6408ZTAEX
Download Datasheet for PI4IOE5V6408ZTAEX
Diodes Incorporated
45,000
From Seba Components
Distributor Stock MOQ Country
Seba Components 45,000 - -
$1.15
 - - 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 -
Product image for MCP23S08-E/SS by Microchip Technology
MCP23S08-E/SS
Download Datasheet for MCP23S08-E/SS
Microchip Technology
44,000
Across 5 distributors
Distributor Stock MOQ Country
Components Technology Group, Inc. 25,000 - -
Risen Electronics 4,000 - -
Tomark Electronics Ltd 4,000 - -
Smaxon Electronics 11,000 - -
HK XINYUANXIN ELECTRONIC TECH LIMITED Stock on Request - -
$1.15
 No No 10 MHz 25mA - POR - - No SPI Yes - 5.3 mm - No No Surface Mount 8 - -40°C ~ 125°C - Push-Pull - - - - 20-SSOP - No 1.8V ~ 5.5V -
Product image for MAX7318AAG+ by Analog Devices / Maxim Integrated
MAX7318AAG+
Download Datasheet for MAX7318AAG+
Analog Devices / Maxim Integrated
43,566
From Romaks Technologies
Distributor Stock MOQ Country
Romaks Technologies 43,566 - -
$1.15
 - - 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 -
Product image for TCA6408AQPWRQ1 by Texas Instruments
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 - -
$0.80
 - - 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 -
Product image for SX1508BIULTRT by Semtech
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 - -
$1.15
 - - 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 -
Product image for PCAL6416AER by NXP Semiconductors
PCAL6416AER
NXP Semiconductors
39,200
From Smaxon Electronics
Distributor Stock MOQ Country
Smaxon Electronics 39,200 - -
$1.15
 - - - - - - - - - - - - - - - - - - - - 3.3V - 24-UFBGA - - °C ~ °C - - No - -
Product image for PCA6107DW by Texas Instruments
PCA6107DW
Texas Instruments
38,160
Across 2 distributors
Distributor Stock MOQ Country
Components Technology Group, Inc. 2,000 - -
Romaks Technologies 36,160 - -
$1.15
 - - 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 -
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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