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Compare
Mfr Part #
Quantity Available
Price
Series
Package
Product Status
DigiKey Programmable
Number of I/O
Interface
Interrupt Output
Features
Output Type
Current - Output Source/Sink
Clock Frequency
Voltage - Supply
Operating Temperature
Mounting Type
Package / Case
Supplier Device Package
16 UQFN
PI4IOE5V6408ZTAEX
IC XPNDR 1MHZ I2C 16UQFN
Diodes Incorporated
20,943
In Stock
1 : $0.83000
Cut Tape (CT)
3,000 : $0.35350
Tape & Reel (TR)
-
Tape & Reel (TR)
Cut Tape (CT)
Digi-Reel®
ActiveNot Verified8I²CYes-Push-Pull-1 MHz1.65V ~ 3.6V-40°C ~ 85°CSurface Mount16-UFQFN16-UQFN (1.8x2.6)
16-TSSOP
TCA9534PWR
IC XPNDR 400KHZ I2C 16TSSOP
Texas Instruments
26,706
In Stock
1 : $1.38000
Cut Tape (CT)
2,000 : $0.49680
Tape & Reel (TR)
-
Tape & Reel (TR)
Cut Tape (CT)
Digi-Reel®
ActiveNot Verified8I²CYes-Push-Pull10mA, 25mA400 kHz1.65V ~ 5.5V-40°C ~ 85°CSurface Mount16-TSSOP (0.173", 4.40mm Width)16-TSSOP
24-QFN
PI4IOE5V6416ZDEX
IC XPNDR 400KHZ I2C 24TQFN
Diodes Incorporated
27,426
In Stock
1 : $1.33000
Cut Tape (CT)
3,500 : $0.56560
Tape & Reel (TR)
-
Tape & Reel (TR)
Cut Tape (CT)
Digi-Reel®
ActiveNot Verified16I²CYesPOROpen Drain, Push-Pull10mA, 25mA400 kHz1.65V ~ 5.5V-40°C ~ 85°CSurface Mount24-VFQFN Exposed Pad24-TQFN (4x4)
18 SOIC
MCP23008T-E/SO
IC XPNDR 1.7MHZ I2C 18SOIC
Microchip Technology
25,061
In Stock
1 : $1.37000
Cut Tape (CT)
1,100 : $1.05000
Tape & Reel (TR)
-
Tape & Reel (TR)
Cut Tape (CT)
Digi-Reel®
ActiveNot Verified8I²CYesPORPush-Pull25mA1.7 MHz1.8V ~ 5.5V-40°C ~ 125°CSurface Mount18-SOIC (0.295", 7.50mm Width)18-SOIC
28 SOIC
MCP23017-E/SO
IC XPNDR 1.7MHZ I2C 28SOIC
Microchip Technology
23,712
In Stock
1 : $1.62000
Tube
-
Tube
ActiveNot Verified16I²CYesPORPush-Pull25mA1.7 MHz1.8V ~ 5.5V-40°C ~ 125°CSurface Mount28-SOIC (0.295", 7.50mm Width)28-SOIC
16-TSSOP
PI4IOE5V9554ALEX
IC XPNDR 400KHZ I2C 16TSSOP
Diodes Incorporated
12,776
In Stock
37,500
Factory
1 : $1.30000
Cut Tape (CT)
2,500 : $0.55146
Tape & Reel (TR)
-
Tape & Reel (TR)
Cut Tape (CT)
Digi-Reel®
ActiveNot Verified8I²CYes---400 kHz2.3V ~ 5.5V-40°C ~ 85°CSurface Mount16-TSSOP (0.173", 4.40mm Width)16-TSSOP
24-TSSOP
PI4IOE5V6416LEX
IC XPNDR 400KHZ I2C 24TSSOP
Diodes Incorporated
18,173
In Stock
3,000
Factory
1 : $1.49000
Cut Tape (CT)
3,000 : $0.68175
Tape & Reel (TR)
-
Tape & Reel (TR)
Cut Tape (CT)
Digi-Reel®
ActiveNot Verified16I²CYesPOROpen Drain, Push-Pull10mA, 25mA400 kHz1.65V ~ 5.5V-40°C ~ 85°CSurface Mount24-TSSOP (0.173", 4.40mm Width)24-TSSOP
16 SOIC
PCA9654EDR2G
IC XPNDR 100KHZ I2C 16SOIC
onsemi
2,816
In Stock
1 : $3.82000
Cut Tape (CT)
2,500 : $1.84651
Tape & Reel (TR)
-
Tape & Reel (TR)
Cut Tape (CT)
Digi-Reel®
ActiveNot Verified8I²CYesPOR--100 kHz1.65V ~ 5.5V-55°C ~ 125°CSurface Mount16-SOIC (0.154", 3.90mm Width)16-SOIC
13,085
Marketplace
119 : $2.53000
Bulk
-
Bulk
ActiveNot Verified18I²C, 2-Wire SerialYesPWMOpen Drain50mA400 kHz2V ~ 3.6V-40°C ~ 125°CSurface Mount24-WFQFN Exposed Pad24-TQFN-EP (4x4)
Showing
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I/O Expanders


Devices in this family are used in conjunction with microcontrollers, microprocessors, or similar devices for the purpose of increasing the number of signal connections available for connecting peripheral devices. The typical concept of operation involves the use of serial communications requiring only a few I/O lines on the host device to read/write the status of many input/output pins on the expander device. The technique exchanges speed of communication for increased connectivity, and is best suited for applications where fast response is not critical, such as in many human interface applications.