I/O Expanders

Diodes Incorporated I/O Expanders provide up to 16-bits of General Purpose Input/Output (GPIO) expansion for I2C-bus/SMBus applications. These expanders include up to two 8-bit registers to configure the input and output. Diodes Incorporated I/O expanders also include up to two dedicated 8-bit registers to configure the polarity. The data for each input or output is kept in the corresponding input port or output port registers. These registers can be read by the system master. The I/O expanders feature high driving capability, low power supply, individual I/O configuration, 5V tolerance, and smaller packaging. These expanders provide a simple solution when additional I/O is needed for ACPI power switches, sensors, pushbuttons, LEDs, and fans.

Results: 15
Select Image Part #
 Mfr.
Description Datasheet Availability Pricing (CHF) Filter the results in the table by unit price based on your quantity.
Qty. RoHS ECAD Model Series
Mounting Style
Package/Case
Interface Type
Number of I/Os
Interrupt Output
Supply Voltage - Min
Supply Voltage - Max
Maximum Clock Frequency
Minimum Operating Temperature
Maximum Operating Temperature
Packaging
ESD Protection
Diodes Incorporated Interface - I/O Expanders 16-bit I2C and SMBus Port
Datasheet
20’125In Stock
MouseReel Available
Min.: 1
Mult.: 1
Max.: 330
: 3’500

PIO4IO SMD/SMT TQFN-24 I2C, Serial, SMBus 16 I/O With Interrupt 2.3 V 5.5 V 400 kHz - 40 C + 85 C Reel, Cut Tape, MouseReel 4 kV
Diodes Incorporated Interface - I/O Expanders 48-bit I2C-bus I/O Expander
Datasheet
1’980In Stock
3’000Expected 8/3/2026
MouseReel Available
Min.: 1
Mult.: 1
Max.: 250
: 3’000

PIO4IO SMD/SMT TQFN-56 I2C, Serial 48 I/O With Interrupt 2.3 V 5.5 V 1 MHz - 40 C + 85 C Reel, Cut Tape, MouseReel 4 kV
Diodes Incorporated Interface - I/O Expanders 16-bit I2C and SMBus Port
Datasheet
3’304In Stock
3’000Expected 7/29/2026
MouseReel Available
Min.: 1
Mult.: 1
Max.: 230
: 3’000

PIO4IO SMD/SMT TSSOP-24 I2C, Serial, SMBus 16 I/O With Interrupt 2.3 V 5.5 V 400 kHz - 40 C + 85 C Reel, Cut Tape, MouseReel 4 kV
Diodes Incorporated Interface - I/O Expanders 16-bit I2C and SMBus low power I/O port
Datasheet
802In Stock
3’000Expected 8/3/2026
Min.: 1
Mult.: 1
: 3’000

PIO4IO SMD/SMT TSSOP-24 I2C, Serial, SMBus 16 I/O With Interrupt 2.3 V 5.5 V 400 kHz - 40 C + 85 C Reel, Cut Tape
Diodes Incorporated Interface - I/O Expanders 16-bit I2C and SMBus low power I/O port
Datasheet
53In Stock
7’000Expected 8/3/2026
MouseReel Available
Min.: 1
Mult.: 1
Max.: 410
: 3’500

PIO4IO SMD/SMT TQFN-24 I2C, Serial, SMBus 16 I/O With Interrupt 2.3 V 5.5 V 400 kHz - 40 C + 85 C Reel, Cut Tape, MouseReel 4 kV

Diodes Incorporated Interface - I/O Expanders 8-bit I2C and SMBus IO Port
Datasheet
4’191In Stock
MouseReel Available
Min.: 1
Mult.: 1
Max.: 160
: 2’500

PIO4IO SMD/SMT TSSOP-16 I2C, Serial, SMBus 8 I/O With Interrupt 2.3 V 5.5 V 400 kHz - 40 C + 85 C Reel, Cut Tape, MouseReel 4 kV

Diodes Incorporated Interface - I/O Expanders 8-bit I2C and SMBus IO Port
Datasheet
3’620In Stock
Min.: 1
Mult.: 1
Max.: 460
: 2’500

PIO4IO SMD/SMT TSSOP-16 I2C, Serial, SMBus 8 I/O With Interrupt 2.3 V 5.5 V 400 kHz - 40 C + 85 C Reel, Cut Tape 4 kV
Diodes Incorporated Interface - I/O Expanders 16-bit I2C-bus and SMBus I/O port
Datasheet
198In Stock
3’500Expected 7/31/2026
MouseReel Available
Min.: 1
Mult.: 1
Max.: 650
: 3’500

PIO4IO SMD/SMT TQFN-24 I2C, Serial, SMBus 8 I/O With Interrupt 2.3 V 5.5 V 400 kHz - 40 C + 85 C Reel, Cut Tape, MouseReel 4 kV
Diodes Incorporated Interface - I/O Expanders 4-bit I2C and SMBus low power I/O port
Datasheet
2’710In Stock
2’500Expected 10/21/2026
MouseReel Available
Min.: 1
Mult.: 1
Max.: 270
: 2’500

PIO4IO SMD/SMT MSOP-8 I2C, Serial, SMBus 4 I/O Without Interrupt 2.3 V 5.5 V 1 MHz - 40 C + 85 C Reel, Cut Tape, MouseReel 4 kV
Diodes Incorporated Interface - I/O Expanders 16-bit I2C and SMBus low power I/O port
Datasheet
41In Stock
Min.: 1
Mult.: 1

PIO4IO SMD/SMT TSSOP-24 I2C, Serial, SMBus 16 I/O With Interrupt 2.3 V 5.5 V 400 kHz - 40 C + 85 C Tube

Diodes Incorporated Interface - I/O Expanders 8-bit I2C and SMBus IO Port
Datasheet
120In Stock
Min.: 1
Mult.: 1

PIO4IO SMD/SMT TSSOP-16 I2C, Serial, SMBus 8 I/O With Interrupt 2.3 V 5.5 V 400 kHz - 40 C + 85 C Tube 4 kV


Diodes Incorporated Interface - I/O Expanders 16-bit I2C-bus and SMBus I/O port
Datasheet
384In Stock
3’000Expected 3/26/2027
Min.: 1
Mult.: 1
Max.: 260
: 3’000

PIO4IO SMD/SMT TSSOP-24 I2C, Serial, SMBus 8 I/O With Interrupt 2.3 V 5.5 V 400 kHz - 40 C + 85 C Reel, Cut Tape 4 kV
Diodes Incorporated Interface - I/O Expanders 24-bit I2C-bus I/O Expander
Datasheet
12’997On Order
MouseReel Available
Min.: 1
Mult.: 1
Max.: 3’500
: 3’500

PIO4IO SMD/SMT TQFN-32 I2C, Serial 24 I/O With Interrupt 2.3 V 5.5 V 1 MHz - 40 C + 85 C Reel, Cut Tape, MouseReel 4 kV

Diodes Incorporated Interface - I/O Expanders 8-bit I2C and SMBus low power I/O port
Datasheet
10’944Factory Stock Available
More Info Available
Min.: 1
Mult.: 1

PIO4IO SMD/SMT TSSOP-16 I2C, Serial, SMBus 8 I/O With Interrupt 2.3 V 5.5 V 400 kHz - 40 C + 85 C Tube 4 kV
Diodes Incorporated Interface - I/O Expanders 16-bit I2C-bus and SMBus I/O port
Datasheet
Non-Stocked Lead-Time 36 Weeks
Min.: 1
Mult.: 1

PIO4IO SMD/SMT TSSOP-24 I2C, Serial, SMBus 8 I/O With Interrupt 2.3 V 5.5 V 400 kHz - 40 C + 85 C Tube