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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

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Part & Mfr AEC Qualified Automotive Grade Clock Frequency Current ESD Protection Features Halogen Free Industrial Grade Input Voltage Interface Interrupt Output Latch-up Performance Lead Spacing Lead Style Medical Grade Military Grade Mounting Style Mounting Type Number of I Number of I/O Operating Temperature Operating Temperature Range Operating Voltage Output Current Output Type Output Voltage Power Dissipation SVHC Present Supplier Device Package Supplier Package Tape & Reel Voltage Voltage Supply
Product image for MCP23017T-E/SO by Microchip Technology
MCP23017T-E/SO
Download Datasheet for MCP23017T-E/SO
Microchip Technology
1,865
Across 4 distributors
Distributor Stock MOQ Country
Speed Components Ltd 5 - -
Xingangxin 960 - -
Smaxon Electronics 900 - -
HK XINYUANXIN ELECTRONIC TECH LIMITED Stock on Request - -
$1.15
 - - 1.7 MHz 25mA - POR - - - I²C Yes - - Through Hole Or Surface Mount - - - Surface Mount 16 16 -40°C ~ 125°C - - - Push-Pull - - - 28-SOIC - - 1.8V ~ 5.5V -
Product image for CP82C55A-5 by Intersil
CP82C55A-5
Intersil
1,842
From Xingangxin
Distributor Stock MOQ Country
Xingangxin 1,842 - -
Price on request
 - - - 2.5mA - - - - - Parallel No - 15.24 mm - - - - Through Hole 24 - 0°C ~ 70°C - - - Open Drain - - - 40-PDIP - - 4.5V ~ 5.5V -
Product image for PCA9538PW by Texas Instruments
PCA9538PW
Texas Instruments
1,842
From Xingangxin
Distributor Stock MOQ Country
Xingangxin 1,842 - -
$1.19
 - - 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 PCF8575CDWR by Texas Instruments
PCF8575CDWR
Texas Instruments
1,809
From Braun Electronic Components
Distributor Stock MOQ Country
Braun Electronic Components 1,809 - -
$2.83
 - - 400 kHz 10mA, 25mA - POR - - - I²C, SMBus Yes - - - - - - Surface Mount 16 - -40°C ~ 85°C - - - Open Drain - - - 24-SOIC - - 4.5V ~ 5.5V -
Product image for PCA9670D,512 by NXP Semiconductors
PCA9670D,512
Download Datasheet for PCA9670D,512
NXP Semiconductors
1,749
From Flip Electronics
Distributor Stock MOQ Country
Flip Electronics 1,749 - -
$1.15
 - - 1 MHz 100µA, 25mA Exceeds 2000 V HBM per JESD22-A114 and 1000 V CDM per JESD22-C101 POR - - - I²C No - 7.5 mm - - - - Surface Mount 8 - -40°C ~ 85°C - - - Push-Pull - - - 16-SO 16-SO - 2.3 V to 5.5 V -
Product image for PCA9570GMH by NXP Semiconductors
PCA9570GMH
Download Datasheet for PCA9570GMH
NXP Semiconductors
1,718
From Xingangxin
Distributor Stock MOQ Country
Xingangxin 1,718 - -
$1.15
 - - 100 kHz 4 mA - POR - - - I²C, SMBus No - 1.6 mm - - - - Surface Mount 4 - -40°C ~ 85°C - - - Push-Pull - - - 8-XQFN - - 1.1 V to 3.6 V -
Product image for MCP23008-E/ML by Microchip Technology
MCP23008-E/ML
Download Datasheet for MCP23008-E/ML
Microchip Technology
1,602
From Xingangxin
Distributor Stock MOQ Country
Xingangxin 1,602 - -
$1.15
 - - 1.7 MHz 25mA - POR - - - I²C Yes - - - - - - Surface Mount 8 - -40°C ~ 125°C - - - Push-Pull - - - 20-QFN (4x4) 20-QFN (4x4) No 1.8V to 5.5V -
Product image for SX1509BIULTRT by Semtech
SX1509BIULTRT
Download Datasheet for SX1509BIULTRT
Semtech
1,597
From Xingangxin
Distributor Stock MOQ Country
Xingangxin 1,597 - -
$1.15
 - - 400 kHz 8mA, 15mA - Keypad Controller, LED Output, POR - - - I²C Yes - - - - - - Surface Mount 16 - -40°C ~ 85°C - - - Open Drain, Push-Pull - - - 28-QFN-UT (4x4) 28-QFN-UT (4x4) - 1.425V to 3.6V -
Product image for PCA9554PWR by Texas Instruments
PCA9554PWR
Texas Instruments
1,594
Across 2 distributors
Distributor Stock MOQ Country
Xingangxin 1,340 - -
Smaxon Electronics 254 - -
$1.00
 No No 400 kHz 10mA / 25mA - POR - No - I²C, SMBus Yes - 4.4 mm - No No - Surface Mount 8 - -40°C ~ 85°C - - - Push-Pull - - - 16-TSSOP - - 2.3V ~ 5.5V -
Product image for MAX7301AAI-T by Analog Devices / Maxim Integrated
MAX7301AAI-T
Analog Devices / Maxim Integrated
1,540
From Smaxon Electronics
Distributor Stock MOQ Country
Smaxon Electronics 1,540 - -
$1.15
 - - 26 MHz 4.5mA, 10mA - - - - - SPI Yes - 5.30 mm - - - - Surface Mount 28 20 -40°C ~ 125°C - - - Push-Pull - - - 28-SSOP - No 2.5V ~ 5.5V 2.5V ~ 5.5V
Product image for PCA9555DWR by Texas Instruments
PCA9555DWR
Texas Instruments
1,457
From Xingangxin
Distributor Stock MOQ Country
Xingangxin 1,457 - -
$1.32
 - - 400 kHz 10mA, 25mA - POR - - - I²C, SMBus Yes - - - - - - Surface Mount 16 - -40°C ~ 85°C - - - Push-Pull - - - 24-SOIC - - 2.3V ~ 5.5V -
Product image for MCP23S17T-E/SO by Microchip Technology
MCP23S17T-E/SO
Download Datasheet for MCP23S17T-E/SO
Microchip Technology
1,406
Across 2 distributors
Distributor Stock MOQ Country
MW.FEP S.p.A. 23 - -
Xingangxin 1,383 - -
$1.22
 - - 10MHz 25mA - POR - - - SPI Yes - - - - - - Surface Mount 16 16 -40°C - 1.8V - Push-Pull - - - 28-SOIC - - 1.8V ~ 5.5V -
Product image for PCA9535ECDWR2G by On Semiconductor
PCA9535ECDWR2G
On Semiconductor
1,300
Across 2 distributors
Distributor Stock MOQ Country
Flip Electronics 1,000 - -
Smaxon Electronics 300 - -
$1.15
 - - 100 kHz 25 mA - POR - - - I²C, SMBus Yes - 0.295 mm - - - - Surface Mount 16 - -55°C ~ 125°C - - - Open Drain - - - 24-SOIC 24-SOIC - 1.65 V ~ 5.5 V -
Product image for JLC1562BFELG by On Semiconductor
JLC1562BFELG
Download Datasheet for JLC1562BFELG
On Semiconductor
1,232
From Smaxon Electronics
Distributor Stock MOQ Country
Smaxon Electronics 1,232 - -
Price on request
 No No 100 kHz - - DAC, POR - No - I2C No - 5.30 mm - No No - Surface Mount 8 - -40°C ~ 85°C - - - Open Drain - - - 16-SOEIAJ - No 4.2V ~ 6V -
Product image for NLVPCA9535EMTTXG by On Semiconductor
NLVPCA9535EMTTXG
On Semiconductor
1,209
Across 2 distributors
Distributor Stock MOQ Country
Braun Electronic Components 1,000 - -
Rayichip 209 - -
$1.15
 - - 100 kHz - - - - - - I²C Yes - 4 mm - - - - Surface Mount 8 - -55°C ~ 125°C - - - Open Drain - - - 24-WQFN (4x4) - - 1.65V ~ 5.5V -
Product image for NLVPCA9535EDTR2G by On Semiconductor
NLVPCA9535EDTR2G
On Semiconductor
1,204
From Flip Electronics
Distributor Stock MOQ Country
Flip Electronics 1,204 - -
$1.15
 - - 100 kHz - - - - - - I²C Yes - 4.4 mm - - - - Surface Mount 16 - -55°C ~ 125°C - - - Open Drain - - - 24-TSSOP - - 1.65V ~ 5.5V -
Product image for SX06-0B00-02 by Broadcom Limited
SX06-0B00-02
Broadcom Limited
1,200
From PROSOFT ELECTRONICS
Distributor Stock MOQ Country
PROSOFT ELECTRONICS 1,200 - -
$1.15
 - - - - - LED Output(s) - - - I²C No - - - - - - - 40 - - - - - - - - - - - - - -
Product image for PCA9538PW,118 by NXP Semiconductors
PCA9538PW,118
Download Datasheet for PCA9538PW,118
NXP Semiconductors
1,184
Across 2 distributors
Distributor Stock MOQ Country
Bristol Electronics 190 - -
Optech Co.,Limited 994 - -
$1.15
 - - 0 Hz to 400 kHz MHz 10 mA, 25 mA - POR; Internal power-on reset; Active LOW reset input; Polarity Inversion register; Noise filter on SCL/SDA inputs; No glitch on power-up; 8 I/O pins which default to 8 inputs - - - I2C-bus/SMBus Active LOW - - - - - - Surface Mount 8 - -40°C to 85°C - 3.0 V to 5.5 V - Open-Drain - - - 16-TSSOP 16-TSSOP - 2.3V ~ 5.5V -
Product image for PCA9557RGYR by Texas Instruments
PCA9557RGYR
Texas Instruments
1,178
From Smaxon Electronics
Distributor Stock MOQ Country
Smaxon Electronics 1,178 - -
$1.07
 - - 400 kHz 10mA, 25mA - POR - - - I2C, SMBus No - - - - - - Surface Mount 8 - -40°C ~ 85°C - - - Open Drain, Push-Pull - - - 16-VQFN (4x3.5) - - 2.3V to 5.5V -
Product image for PCA9534PW,118 by NXP Semiconductors
PCA9534PW,118
Download Datasheet for PCA9534PW,118
NXP Semiconductors
1,160
From PROSOFT ELECTRONICS
Distributor Stock MOQ Country
PROSOFT ELECTRONICS 1,160 - -
$1.15
 - - 400 kHz 10mA, 25mA - POR - - - I2C, SMBus Yes - 0.173 mm Through-Hole - - - Surface Mount 8 - -40°C - - - Push-Pull - - - 16-TSSOP - - 2.3 V to 5.5 V -
Product image for MCP23008-E/SO by Microchip Technology
MCP23008-E/SO
Download Datasheet for MCP23008-E/SO
Microchip Technology
1,026
Across 3 distributors
Distributor Stock MOQ Country
Braun Electronic Components 24 - -
Partservice 2 - -
Xingangxin 1,000 - -
$1.15
 No No 1.7 MHz 25 mA - POR - No 1.8 V I2C Yes - 7.5 mm - No No - Surface Mount 8 - -40°C - - - Push-Pull 1.8 V 700 mW - 18-SOIC - No 1.8 V -
Product image for PCA9535EDTR2G by On Semiconductor
PCA9535EDTR2G
On Semiconductor
1,023
Across 2 distributors
Distributor Stock MOQ Country
Braun Electronic Components 1,000 - -
Speed Components Ltd 23 - -
$1.15
 - - 100 kHz 10 mA / 25 mA - POR - - - I²C, SMBus Yes - - - - - - Surface Mount 16 - -55°C to 125°C - - - Push-Pull - - - 24-TSSOP TSSOP - 1.65 V to 5.5 V -
Product image for PCA9538D,112 by NXP Semiconductors
PCA9538D,112
Download Datasheet for PCA9538D,112
NXP Semiconductors
1,019
From Flip Electronics
Distributor Stock MOQ Country
Flip Electronics 1,019 - -
$1.15
 - - 0 Hz to 400 kHz 10 mA, 25 mA - POR - - - I2C, SMBus Yes - - J-Lead - - - Surface Mount 8 - -40°C to 85°C - - - Push-Pull - - - 16-SO - - 2.3 V to 5.5 V -
Product image for PI4IOE5V9535ZDEX by Diodes Incorporated
PI4IOE5V9535ZDEX
Download Datasheet for PI4IOE5V9535ZDEX
Diodes Incorporated
1,000
From Xingangxin
Distributor Stock MOQ Country
Xingangxin 1,000 - -
$1.15
 - - 400 kHz - 4KV HBM and 1KV CDM - - - - I²C Yes - - - - - - Surface Mount 16 - -40°C ~ 85°C - - - - - - - 24-TQFN (4x4) - - 2.3V to 5.5V -
Product image for PCA9539DBR by Texas Instruments
PCA9539DBR
Texas Instruments
1,000
From Xingangxin
Distributor Stock MOQ Country
Xingangxin 1,000 - -
$1.47
 No No 400 kHz 10mA, 25mA ESD protection exceeds JESD 22 POR - No - I2C, SMBus Yes Latch-up performance exceeds 100 mA 0.209 mm - No No - Surface Mount 16 - -40°C ~ 85°C - - - Push-Pull - - - 24-SSOP - - 2.3V ~ 5.5V -
Product image for PCA9555HF,118 by NXP Semiconductors
PCA9555HF,118
Download Datasheet for PCA9555HF,118
NXP Semiconductors
1,000
From Fe Components
Distributor Stock MOQ Country
Fe Components 1,000 - -
$1.15
 - - 400 kHz 10mA, 25mA - POR - - - I²C, SMBus Yes - - - - - - Surface Mount 16 - -40°C ~ 85°C - - - Push-Pull - - - 24-HWQFN (4x4) - - 2.3 V to 5.5 V -
Product image for SX1509QBIULTRT by Semtech
SX1509QBIULTRT
Semtech
948
From Smaxon Electronics
Distributor Stock MOQ Country
Smaxon Electronics 948 - -
$1.15
 - - 400 kHz 8mA, 15mA - Keypad Controller, LED Output, POR - - - I2C Yes - - - - - - Surface Mount 16 16 -40°C ~ 85°C - - - Open Drain, Push-Pull - - - 28-QFN-UT (4x4) - - 1.425V ~ 3.6V -
Product image for TCA9554ADBR by Texas Instruments
TCA9554ADBR
Download Datasheet for TCA9554ADBR
Texas Instruments
932
From Optech Co.,Limited
Distributor Stock MOQ Country
Optech Co.,Limited 932 - -
$0.52
 - - 400 kHz - - POR - - - I2C, SMBus Yes - - - - - - Surface Mount 8 - -40°C - - - Push-Pull - - - 16-SSOP - - 1.65V -
Product image for PCF8574DGVR by Texas Instruments
PCF8574DGVR
Texas Instruments
869
From Smaxon Electronics
Distributor Stock MOQ Country
Smaxon Electronics 869 - -
$1.61
 - - 100 kHz 1mA, 25mA - POR - - - I2C Yes - - - - - - Surface Mount 8 - -40°C ~ 85°C - - - Push-Pull - - - 20-TVSOP 20-TVSOP - 2.5V to 6V -
Product image for PI4IOE5V96248ZLEX by Diodes Incorporated
PI4IOE5V96248ZLEX
Download Datasheet for PI4IOE5V96248ZLEX
Diodes Incorporated
857
From Xingangxin
Distributor Stock MOQ Country
Xingangxin 857 - -
$1.15
 No No 1 MHz 42mA, 480µA 4kV HBM, 1kV CDM - - No - I2C Yes - - - No No - Surface Mount 48 - -40°C - 2.3V - Open Drain - - - 56-TQFN (7x7) 56-TQFN (7x7) No 2.3V ~ 5.5V -
Product image for PCA6416APW,118 by NXP Semiconductors
PCA6416APW,118
Download Datasheet for PCA6416APW,118
NXP Semiconductors
828
Across 2 distributors
Distributor Stock MOQ Country
MW.FEP S.p.A. 6 - -
PROSOFT ELECTRONICS 822 - -
$1.15
 - - 400 kHz 10mA, 25mA - POR - - - I²C, SMBus Yes - - - - - - Surface Mount 16 - -40°C ~ 85°C -40°C to +85°C - 10 mA, 25 mA Push-Pull - - - 24-TSSOP - - 1.65V ~ 5.5V -
Product image for ADP5587ACPZ-R7 by Analog Devices / Maxim Integrated
ADP5587ACPZ-R7
Download Datasheet for ADP5587ACPZ-R7
Analog Devices / Maxim Integrated
817
From PROSOFT ELECTRONICS
Distributor Stock MOQ Country
PROSOFT ELECTRONICS 817 - -
Price on request
 - - 400 kHz - - Keypad Controller, POR - - - I²C Yes - - - - - - Surface Mount 18 - -40°C ~ 85°C - - - Open Drain - - - 24-LFCSP-WQ (4x4) - - 1.65V ~ 3.6V -
Product image for PCA9554DBR by Texas Instruments
PCA9554DBR
Texas Instruments
808
Across 2 distributors
Distributor Stock MOQ Country
Braun Electronic Components 404 - -
MW.FEP S.p.A. 404 - -
$1.15
 - - 400 kHz 10mA, 25mA - POR - - - I²C, SMBus Yes - 0.209 mm Through Hole - - - Surface Mount 8 - -40°C ~ 85°C - - - Push-Pull - - - 16-SSOP 16-SSOP - 2.3V ~ 5.5V -
Product image for PCF8575CDBR by Texas Instruments
PCF8575CDBR
Texas Instruments
720
From Seba Components
Distributor Stock MOQ Country
Seba Components 720 - -
$2.83
 - - 400 kHz 10mA, 25mA - POR - - - I²C, SMBus Yes - 5.3 mm - - - - Surface Mount 16 - -40°C to 85°C - - - Open Drain - - - 24-SSOP - - 4.5V to 5.5V -
Product image for CDP1852E by Harris Semiconductor
CDP1852E
Download Datasheet for CDP1852E
Harris Semiconductor
695
Across 2 distributors
Distributor Stock MOQ Country
Fe Components 300 - -
Hybrid Electronics 395 - -
Price on request
 - - - 6mA - - - - - Parallel No - - - - - - Through Hole 8 - -40°C ~ 85°C - - - - - - - 24-PDIP - - 4V ~ 10.5V -
Product image for TCA9539RGER by Texas Instruments
TCA9539RGER
Texas Instruments
568
From Optech Co.,Limited
Distributor Stock MOQ Country
Optech Co.,Limited 568 - -
$0.86
 - - 400 kHz 10mA, 25mA - POR - - - I²C, SMBus Yes - 4 mm - - - - Surface Mount 16 - -40°C to 85°C - - - Push-Pull - - - 24-VQFN (4x4) - - 1.65V to 5.5V -
Product image for MAX7312AUG+ by Analog Devices / Maxim Integrated
MAX7312AUG+
Download Datasheet for MAX7312AUG+
Analog Devices / Maxim Integrated
535
Across 4 distributors
Distributor Stock MOQ Country
Braun Electronic Components 100 - -
Speed Components Ltd 220 - -
Bristol Electronics 115 - -
RAD 100 - -
$1.15
 - - 400 kHz 31mA, 43mA - POR - - - I2C, SMBus Yes - - - - - - Surface Mount 16 - -40°C ~ 125°C - - - Push-Pull - - - 24-TSSOP - - 2V ~ 5.5V -
Product image for PCA9535ECMTTXG by On Semiconductor
PCA9535ECMTTXG
On Semiconductor
486
From Flip Electronics
Distributor Stock MOQ Country
Flip Electronics 486 - -
$1.15
 - - 100 kHz 25mA - POR - - - I²C, SMBus Yes - - - - - - Surface Mount 16 - -55°C ~ 125°C - - - Open Drain - - - 24-QFN (4x4) 24-QFN (4x4) No 1.65V ~ 5.5V -
Product image for TCA6424RGJR by Texas Instruments
TCA6424RGJR
Texas Instruments
481
From Smaxon Electronics
Distributor Stock MOQ Country
Smaxon Electronics 481 - -
$2.63
 - - 400 kHz 10mA - POR - - - I2C, SMBus Yes - - - - - - Surface Mount 24 - -40°C - - - Push-Pull - - - 32-UQFN (5x5) 32-UQFN (5x5) - 1.65V -
Product image for MAX7316ATE by Analog Devices / Maxim Integrated
MAX7316ATE
Analog Devices / Maxim Integrated
480
From Smaxon Electronics
Distributor Stock MOQ Country
Smaxon Electronics 480 - -
$1.15
 - - 400 kHz 50mA - PWM - - - I2C, SMBus Yes - - - - - - Surface Mount 10 - -40°C ~ 125°C - - - Open Drain - - - 16-TQFN-EP (3x3) - - 2V ~ 3.6V -
Product image for DS4520E+ by Analog Devices / Maxim Integrated
DS4520E+
Download Datasheet for DS4520E+
Analog Devices / Maxim Integrated
473
From Bristol Electronics
Distributor Stock MOQ Country
Bristol Electronics 473 - -
Price on request
 - - 400 kHz 12mA - EEPROM, POR - - - I2C No - - - - - - Surface Mount 9 - -40°C ~ 85°C - - - Open Drain - - - 16-TSSOP - - 2.7V ~ 5.5V -
Product image for PCA8575BS,118 by NXP Semiconductors
PCA8575BS,118
Download Datasheet for PCA8575BS,118
NXP Semiconductors
462
From Optech Co.,Limited
Distributor Stock MOQ Country
Optech Co.,Limited 462 - -
$1.15
 - - 400 kHz 25 mA - POR - - - I2C Yes - - - - - - Surface Mount 16-bit - -40°C ~ 85°C - - - Push-Pull - - - 24-HVQFN (4x4) 24-HVQFN (4x4) No 2.3 V ~ 5.5 V -
Product image for PCA9535PW,112 by NXP Semiconductors
PCA9535PW,112
NXP Semiconductors
427
Across 2 distributors
Distributor Stock MOQ Country
Braun Electronic Components 405 - -
MW.FEP S.p.A. 22 - -
$1.15
 - - 400 kHz 10mA, 25mA 2 kV POR; Input mode: invert option Yes - - I2C, SMBus Yes - 4.4 mm - - - SMD/SMT Surface Mount 16 - -40°C ~ 85°C - 2.3 V to 5.5 V 10 mA Push-Pull - 200 mW - 24-TSSOP - No 2.3V ~ 5.5V -
Product image for PCA9535PWR by Texas Instruments
PCA9535PWR
Texas Instruments
362
From Smaxon Electronics
Distributor Stock MOQ Country
Smaxon Electronics 362 - -
$0.96
 - - 400 kHz 10mA, 25mA - POR - - - I²C, SMBus Yes - - - - - - Surface Mount 16 - -40°C ~ 85°C - 2.3V ~ 5.5V - Push-Pull - - - 24-TSSOP - - 2.3V ~ 5.5V -
Product image for MAX7311ATG+T by Analog Devices / Maxim Integrated
MAX7311ATG+T
Download Datasheet for MAX7311ATG+T
Analog Devices / Maxim Integrated
354
From Braun Electronic Components
Distributor Stock MOQ Country
Braun Electronic Components 354 - -
$1.15
 - - 400 kHz 31mA, 43mA - POR - - - I2C, SMBus Yes - 4 mm - - - - Surface Mount 16 - -40°C to +125°C - - - Push-Pull - - - 24-TQFN (4x4) - - 2V to 5.5V -
Product image for CAT9555YI by On Semiconductor
CAT9555YI
On Semiconductor
343
From Flip Electronics
Distributor Stock MOQ Country
Flip Electronics 343 - -
Price on request
 - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
Product image for TCA6416RTWR by Texas Instruments
TCA6416RTWR
Texas Instruments
300
From Optech Co.,Limited
Distributor Stock MOQ Country
Optech Co.,Limited 300 - -
$2.17
 - - 400 kHz 10mA / 25mA Exceeds JESD 22 POR - - - I²C, SMBus Yes Exceeds 100 mA Per JESD 78, Class II 4 mm - - - - Surface Mount 16 - -40°C to 85°C - - - Push-Pull - - - 24-WQFN (4x4) - - 1.65V to 5.5V -
Product image for MCP23S18T-E/SO by Microchip Technology
MCP23S18T-E/SO
Download Datasheet for MCP23S18T-E/SO
Microchip Technology
282
From Tomark Electronics Ltd
Distributor Stock MOQ Country
Tomark Electronics Ltd 282 - -
$1.15
 - - 10 MHz 25mA - - - - - SPI Yes - 0.295 mm - - - - Surface Mount 16-Bit - -40°C ~ 125°C - - - Open Drain - - - 28-SOIC - - 1.8V ~ 5.5V -
Product image for ADP5587ACBZ-R7 by Analog Devices / Maxim Integrated
ADP5587ACBZ-R7
Download Datasheet for ADP5587ACBZ-R7
Analog Devices / Maxim Integrated
282
From Rayichip
Distributor Stock MOQ Country
Rayichip 282 - -
$0.75
 - - 400 kHz - - Keypad Controller, POR - - - I²C Yes - - - - - - Surface Mount 18 - -40°C ~ 85°C - - - Open Drain - - Not Present 25-WLCSP (1.97x1.97) - Yes 1.65V ~ 3.6V -
Product image for TCA6416PWT by Texas Instruments
TCA6416PWT
Texas Instruments
250
From Rayichip
Distributor Stock MOQ Country
Rayichip 250 - -
$2.55
 - - 400 kHz 10 mA / 25 mA Exceeds JESD 22 2000-V Human-Body Model (A114-A), 200-V Machine Model (A115-A), 1000-V Charged-Device Model (C101) POR - - - I²C, SMBus Yes Exceeds 100 mA Per JESD 78, Class II - - - - - Surface Mount 16 - -40°C / 85°C - - - Push-Pull - - - 24-TSSOP 24-TSSOP - 1.65 V / 5.5 V -
Showing 301-350 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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