IO Expanders DistyParts

Integrated Circuits (ICs) > IO Expanders

Select category

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.

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.

Part & Mfr

AEC Qualified

Automotive Grade

Clock Frequency

Conflict Minerals

Current

ESD Protection

Features

Halogen Free

Industrial Grade

Input Voltage

Interface

Interrupt Output

Latch-up Performance

Lead Spacing

Lead Style

Logic Type

Medical Grade

Military Grade

Mounting Type

Number of I

Number of I/O

Operating Temperature

Operating Temperature Range

Operating Voltage

Output Current

Output Type

Output Voltage

Package / Case

Power Dissipation

Product Type

SVHC Present

Storage Temperature

Supplier Device Package

Supplier Package

Tape & Reel

Voltage

Voltage Supply

MCP23008T-E/ML

Microchip Technology

3,316

Across 2 distributors

Distributor	Stock	MOQ	Country
Braun Electronic Components	2	-	-
Xingangxin	3,314	-	-

$1.15

1.7 MHz

25mA

POR

I²C

Yes

4 mm

Surface Mount

-40°C ~ 125°C

Push-Pull

20-QFN (4x4)

1.8V ~ 5.5V

TCA9554PWR

Texas Instruments

3,250

$1.15

400 kHz

10mA, 25mA

POR

I²C, SMBus

Yes

4.40 mm

Surface Mount

-40°C / 85°C

Push-Pull

16-TSSOP

1.65V / 5.5V

PCA9555PW,118

NXP Semiconductors

3,221

Across 3 distributors

Distributor	Stock	MOQ	Country
Components Technology Group, Inc.	2	-	-
Braun Electronic Components	3,177	-	-
Bristol Electronics	42	-	-

$1.15

400 kHz

10mA, 25mA

Exceeds 2000 V HBM

POR

I2C-bus/SMBus

Active LOW

I2c, Smbus

SMD/SMT

+ 85 C °C

2.3 V to 5.5 V

50 mA

Push-Pull

1.7 V to 4.1 V

200 mW

24-TSSOP

2.3V ~ 5.5V

MCP23016T-I/ML

Microchip Technology

3,200

Across 2 distributors

Distributor	Stock	MOQ	Country
Braun Electronic Components	1,600	-	-
MW.FEP S.p.A.	1,600	-	-

$1.15

400 kHz

±25 mA

POR

I²C

Yes

Surface Mount

16-bit

-40°C ~ 85°C

Push-Pull

28-QFN (6x6)

2V ~ 5.5V

PCA9575PW2,118

NXP Semiconductors

3,152

Across 3 distributors

Distributor	Stock	MOQ	Country
Components Technology Group, Inc.	2,152	-	-
Risen Electronics	1,000	-	-
HK XINYUANXIN ELECTRONIC TECH LIMITED	Stock on Request	-	-

$1.15

400 kHz

1mA, 3mA

POR

I²C, SMBus

Yes

Surface Mount

-40°C to 85°C

Push-Pull

28-TSSOP

1.1V to 3.6V

PCA9539DBQR

Texas Instruments

3,147

$1.47

400 kHz

10mA, 25mA

2000-V Human-body model (A114-A) V

POR

I2C, SMBus

Yes

Exceeds 100 mA

Surface Mount

-40°C ~ 85°C

Push-Pull

24-SSOP

2.3V ~ 5.5V

CS82C55AZ96

Renesas

3,112

Across 3 distributors

Distributor	Stock	MOQ	Country
Braun Electronic Components	1,400	-	-
Xingangxin	1,712	-	-
HK XINYUANXIN ELECTRONIC TECH LIMITED	Stock on Request	-	-

Price on request

2.5mA

Parallel

J-Lead

Surface Mount

0°C / 70°C

Open Drain

44-PLCC (16.58x16.58)

4.5V / 5.5V

PCA9500PW

NXP Semiconductors

3,056

Across 4 distributors

Distributor	Stock	MOQ	Country
Speed Components Ltd	530	-	-
Hybrid Electronics	238	-	-
Xingangxin	1,124	-	-
Smaxon Electronics	1,164	-	-

$1.15

°C ~ °C

PCAL9539APW,118

NXP Semiconductors

3,000

$1.15

400 kHz

10mA, 25mA

POR

I2C, SMBus

Yes

Through Hole

Surface Mount

-40°C

1.65V

10mA

Open Drain, Push-Pull

24-TSSOP (0.173", 4.40mm Width)

24-TSSOP

1.65V ~ 5.5V

PCA8574APW,118

NXP Semiconductors

3,000

$1.15

400 kHz

100 µA

POR

I2C

Yes

Through-Hole

Surface Mount

-40 °C to 85 °C

Push-Pull

16-TSSOP

2.3 V to 5.5 V

PCA9554AD,118

NXP Semiconductors

3,000

$1.15

400 kHz

10 mA, 25 mA

Exceeds 2000 V HBM per JESD22-A114 and 1000 V CDM per JESD22-C101

POR

5 V

I2C, SMBus

Open-drain interrupt output

Through Hole

I2C, SMBus

SMD/SMT

-40°C to +85°C

2.3 V to 5.5 V

50 mA

Push-Pull

5 V

200 mW

I/O Expanders

16-SO

2.3V ~ 5.5V

PCA9555D,118

NXP Semiconductors

3,000

$1.15

400 kHz

10mA, 25mA

POR

I²C, SMBus

Yes

Through Hole

Surface Mount

-40°C ~ 85°C

Push-Pull

24-SO

2.3 V ~ 5.5 V

PCA9554ABS3,118

NXP Semiconductors

3,000

$1.15

400 kHz

10mA

POR

I2C, SMBus

Yes

3 mm

Surface Mount

-40°C

Push-Pull

16-HVQFN (3x3)

2.3V

PCA9539PW/Q900,118

NXP Semiconductors

3,000

$1.15

Yes

400 kHz

Unaffected

10mA, 25mA

2 kV

POR

Yes

I2C, SMBus

Yes

Surface Mount

-40°C ~ 125°C

2.3 V to 5.5 V

Push-Pull

200 mW

Not Present

24-TSSOP

3V ~ 5.5V

DS2408S

Analog Devices / Maxim Integrated

2,774

Price on request

20 mA

DAC

1-Wire

3.9 mm

Surface Mount

-40°C

Open Drain

16-SOIC

2.8 V

STMPE1601TBR

STMicroelectronics

2,700

From Smaxon Electronics

$1.15

400 kHz

4mA

POR; Keypad Controller; PWM

I2C

Yes

Surface Mount

-40°C ~ 85°C

Push-Pull

25-TFBGA (3x3)

1.65V ~ 3.6V

N82C55A2

Intel

2,696

Across 3 distributors

Distributor	Stock	MOQ	Country
Components Technology Group, Inc.	2,333	-	-
Speed Components Ltd	340	-	-
Partservice	23	-	-

$1.15

8 MHz

2.5mA

Direct Bit Set/Reset

Yes

Surface Mount

0°C

44-PLCC

4.5V

BU1850MUV-E2

ROHM Semiconductor

2,655

From Smaxon Electronics

Price on request

400 kHz

POR

I2C

Yes

Surface Mount

-30°C ~ 85°C

Open Drain

VQFN016V3030

1.65V ~ 3.6V

PCA9538APWJ

NXP Semiconductors

2,614

Across 2 distributors

Distributor	Stock	MOQ	Country
Optech Co.,Limited	1,207	-	-
Xingangxin	1,407	-	-

$1.15

400 kHz

10mA, 25mA

POR

I²C, SMBus

Yes

Surface Mount

-40°C to 85°C

1.65V to 5.5V

Push-Pull

16-TSSOP

1.65V ~ 5.5V

PCA9505DGG,118

NXP Semiconductors

2,599

Across 2 distributors

Distributor	Stock	MOQ	Country
Components Technology Group, Inc.	2,386	-	-
PROSOFT ELECTRONICS	213	-	-

$1.15

400 kHz

[{'limit_type': 'maximum', 'value': 10, 'unit': 'mA', 'display_value': '10mA'}, {'limit_type': 'maximum', 'value': 25, 'unit': 'mA', 'display_value': '25mA'}]

POR

I²C

Yes

6.1 mm

Surface Mount

[{'limit_type': 'minimum', 'value': -40, 'unit': '°C', 'display_value': '-40°C'}, {'limit_type': 'maximum', 'value': 85, 'unit': '°C', 'display_value': '+85°C'}]

Push-Pull

56-TFSOP (0.240", 6.10mm Width)

56-TSSOP

[{'limit_type': 'minimum', 'value': 2.3, 'unit': 'V', 'display_value': '2.3V'}, {'limit_type': 'maximum', 'value': 5.5, 'unit': 'V', 'display_value': '5.5V'}]

PCA9655EDTR2G

On Semiconductor

2,538

Across 3 distributors

Distributor	Stock	MOQ	Country
MW.FEP S.p.A.	10	-	-
Xingangxin	1,000	-	-
Smaxon Electronics	1,528	-	-

$1.15

100 kHz

42mA

POR

I²C, SMBus

Yes

4.4 mm

Surface Mount

-55°C ~ 125°C

Push-Pull

24-TSSOP

1.65V to 5.5V

PCF8574APW

Texas Instruments

2,524

From Components Technology Group, Inc.

$1.15

100 kHz

1mA, 25mA

POR

I²C

Yes

Surface Mount

-40°C ~ 85°C

50mA

Push-Pull

20-TSSOP

2.5V ~ 6V

MCP23018-E/MJ

Microchip Technology

2,505

$1.15

3.4 MHz

25mA

POR

I2C

Yes

Surface Mount

16-Bit

-40°C ~ 125°C

Open Drain

24-QFN (4x4)

1.8V ~ 5.5V

P8155H

Rochester Electronics

2,504

Across 2 distributors

Distributor	Stock	MOQ	Country
Components Technology Group, Inc.	2,500	-	-
HMB Electronics LLC	4	-	-

$1.15

PCAL6416APW,118

NXP Semiconductors

2,500

$1.15

400 kHz

10mA, 25mA

POR

I²C, SMBus

Yes

0.173" mm

Surface Mount

-40°C ~ 85°C

Open Drain, Push-Pull

24-TSSOP

1.65V ~ 5.5V

PCA9554D

NXP Semiconductors

2,500

Across 2 distributors

Distributor	Stock	MOQ	Country
Components Technology Group, Inc.	2,500	-	-
HK XINYUANXIN ELECTRONIC TECH LIMITED	Stock on Request	-	-

$1.15

AAT4292IJQ-T1

Skyworks Solutions

2,419

From Husky International Electronic

Price on request

Gull Wing

-40°C to +85°C

PCAL6524HEHP

NXP Semiconductors

2,306

Across 2 distributors

Distributor	Stock	MOQ	Country
Optech Co.,Limited	1,220	-	-
Xingangxin	1,086	-	-

$1.15

1 MHz

POR

I²C

Yes

5 mm

Surface Mount

-40°C ~ 85°C

Open Drain, Push-Pull

32-HUQFN (5x5)

1.65V ~ 5.5V

PCA9535D,112

NXP Semiconductors

2,258

Across 2 distributors

Distributor	Stock	MOQ	Country
Fe Components	1,230	-	-
Optech Co.,Limited	1,028	-	-

$1.15

400 kHz

10mA, 25mA

POR

I²C, SMBus

Yes

Surface Mount

-40°C to 85°C

Push-Pull

24-SO

2.3V to 5.5V

PCAL6408AHKX

NXP Semiconductors

2,207

Across 3 distributors

Distributor	Stock	MOQ	Country
Risen Electronics	1,000	-	-
Xingangxin	1,207	-	-
HK XINYUANXIN ELECTRONIC TECH LIMITED	Stock on Request	-	-

$1.15

400 kHz

10mA, 25mA

POR

I2C, SMBus

Yes

1.8 mm

Surface Mount

-40°C ~ 85°C

Open Drain, Push-Pull

16-XQFN (1.8x2.6)

1.65V ~ 5.5V

MCP23008T-E/SSVAO

Microchip Technology

2,121

From Optech Co.,Limited

$1.15

10 MHz

25mA

POR

I²C

Yes

5.3 mm

Surface Mount

-40°C ~ 125°C

Push-Pull

20-SSOP

4.5V ~ 5.5V

MAX7300ATL+T

Analog Devices / Maxim Integrated

2,100

$1.15

400 kHz

4.5mA, 10mA

I2C-compatible

Yes

6 mm

Surface Mount

-40°C to +125°C

2.5V to 5.5V

sinking 10mA and sourcing 4.5mA

Push-Pull

40-TQFN (6x6)

2.5V ~ 5.5V

PCA9554PW,112

NXP Semiconductors

2,031

Across 4 distributors

Distributor	Stock	MOQ	Country
Fe Components	2,016	-	-
Flip Electronics	6	-	-
Speed Components Ltd	9	-	-
HK XINYUANXIN ELECTRONIC TECH LIMITED	Stock on Request	-	-

$1.15

0 Hz to 400 kHz

10mA, 25mA

POR

I²C, SMBus

Yes

Surface Mount

-40°C

Push-Pull

16-TSSOP

2.3V ~ 5.5V

PCA9670PW,118

NXP Semiconductors

2,008

Across 2 distributors

Distributor	Stock	MOQ	Country
Risen Electronics	2,000	-	-
Partservice	8	-	-

$1.15

1 MHz

25 mA

POR; Active LOW reset input; Readable device ID; Software reset; Fast-mode Plus I2C-bus; SDA with 30 mA sink capability; Latched outputs with 25 mA sink capability; Total package sink capability of 200 mA; Sixty-four programmable slave addresses

I2C

Surface Mount

-40°C ~ 85°C

Push-Pull

16-TSSOP

2.3V ~ 5.5V

PI4IOE5V6416ZDEX

Diodes Incorporated

2,005

$1.15

400 kHz

10mA, 25mA

POR

I2C

Yes

4 mm

Surface Mount

-40°C to 85°C

Open Drain, Push-Pull

-65°C to 150°C

24-TQFN (4x4)

1.65V to 5.5V / -0.5V to 6.0V

CAT9554HV4I-GT2

On Semiconductor

2,003

From Smaxon Electronics

Price on request

400 kHz

[{'limit_type': 'typical', 'value': 10, 'unit': 'mA', 'display_value': '10mA'}, {'limit_type': 'typical', 'value': 24, 'unit': 'mA', 'display_value': '24mA'}]

POR

Yes

I2C, SMBus

Yes

Surface Mount

[{'minimum': -40, 'maximum': 85, 'unit': '°C', 'display_value': '-40°C ~ 85°C'}]

Push-Pull

16-TQFN (4x4)

[{'minimum': 2.3, 'maximum': 5.5, 'unit': 'V', 'display_value': '2.3 V ~ 5.5 V'}]

PCAL6416AEX1Z

NXP Semiconductors

2,000

$1.15

400 kHz

10mA, 25mA

POR

I2C, SMBus

Yes

2.0 mm

Surface Mount

-40°C to 85°C

Open Drain, Push-Pull

24-X2QFN (2x2)

1.65V to 5.5V

PCA9539AHF,128

NXP Semiconductors

2,000

$1.15

400 kHz

10 mA

POR

I²C, SMBus

Yes

4 mm

Surface Mount

-40°C ~ 85°C

Push-Pull

-40°C ~ 85°C

24-HWQFN (4x4)

1.65 V / 5.5 V

PCA9554CPWJ

NXP Semiconductors

2,000

$1.15

400 kHz

25mA

POR

I²C, SMBus

Yes

Through Hole

Surface Mount

8-bit

-40°C ~ 85°C

Push-Pull

16-TSSOP

1.65V ~ 5.5V

CP82C55AZ

Renesas

2,000

From Components Technology Group, Inc.

$18.03

2.5mA

Parallel

Through Hole

0°C ~ 70°C

Open Drain

40-PDIP

4.5V ~ 5.5V

NCA9555PW-Q100J

Nexperia USA Inc.

2,000

$1.15

POR

I²C, SMBus

Yes

Surface Mount

Open Drain

24-TSSOP

1.65V ~ 5.5V

PCA9537DPZ

NXP Semiconductors

2,000

$1.15

400 kHz

10mA, 24mA

POR

I²C, SMBus

Yes

3.0 mm

Surface Mount

-40°C ~ 85°C

Push-Pull

10-TSSOP

2.3V ~ 5.5V

PCA9534ADGVR

Texas Instruments

2,000

$1.15

400 kHz

10mA, 25mA

POR

I²C, SMBus

Yes

Surface Mount

-40°C ~ 85°C

Push-Pull

16-TVSOP

2.3V ~ 5.5V

PCA9554APWR

Texas Instruments

2,000

From Components Technology Group, Inc.

$1.15

400 kHz

10mA | 25mA

POR

I2C, SMBus

Yes

Exceeds 100 mA

Surface Mount

-40°C ~ 85°C

Push-Pull

16-TSSOP

2.3V ~ 5.5V

CS82C55A

Renesas

2,000

From Components Technology Group, Inc.

Price on request

2.5mA

Parallel

Surface Mount

0°C ~ 70°C

Open Drain

44-PLCC (16.58x16.58)

4.5V ~ 5.5V

CAT9555HT6I-GT2

On Semiconductor

2,000

From Components Technology Group, Inc.

Price on request

400 kHz

[{'limit_type': 'typical', 'value': 10, 'unit': 'mA', 'display_value': '10 mA'}, {'limit_type': 'typical', 'value': 24, 'unit': 'mA', 'display_value': '24 mA'}]

POR

I2C, SMBus

Yes

Surface Mount

[{'limit_type': 'minimum', 'value': -40, 'unit': '°C', 'display_value': '-40°C'}, {'limit_type': 'maximum', 'value': 85, 'unit': '°C', 'display_value': '85°C'}]

Push-Pull

24-TQFN (4x4)

24-WFQFN Exposed Pad

[{'limit_type': 'minimum', 'value': 2.3, 'unit': 'V', 'display_value': '2.3V'}, {'limit_type': 'maximum', 'value': 5.5, 'unit': 'V', 'display_value': '5.5V'}]

PCA9674APW,118

NXP Semiconductors

1,991

From PROSOFT ELECTRONICS

$1.15

1 MHz

100µA, 25mA

POR

I²C

Yes

Surface Mount

-40°C ~ 85°C

2.3 V ~ 5.5 V

Push-Pull

16-TSSOP

2.3V ~ 5.5V

PCA9539PWR

Texas Instruments

1,949

From Smaxon Electronics

$1.75

400 kHz

10mA, 25mA

2000V (HBM)

POR

I2C, SMBus

Yes

>100 mA

Surface Mount

-40°C to 85°C

Push-Pull

24-TSSOP

2.3V to 5.5V

PCA9534ADBR

Texas Instruments

1,915

From Smaxon Electronics

$1.54

400kHz

10mA

POR

I2C, SMBus

Yes

0.209 mm

Surface Mount

-40°C

Push-Pull

16-SSOP

2.3V

SX1505I087TRT

Semtech

1,905

From Bristol Electronics

$1.15

400 kHz

8mA, 24mA

POR

I²C

Yes

Surface Mount

-40°C ~ 85°C

2.5V ~ 5.5V

Push-Pull

20-QFN-UT (3x3)

2.5V ~ 5.5V

Showing 251-300 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.

Read full description

IO Expanders

What are IO Expanders ?

Parts in this category

About IO Expanders

Categories