I/O Expanders

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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	Grade	Qualification	Mounting Type	Package / Case	Supplier Device Package

PI4IOE5V9535ZDEX IC XPNDR 400KHZ I2C 24TQFN Diodes Incorporated	53,336 In Stock	1 : ¥13.18000 Cut Tape (CT) 3,500 : ¥6.02753 Tape & Reel (TR)	-	Tape & Reel (TR) Cut Tape (CT) Digi-Reel®	Active	Not Verified	16	I2C	Yes	-	-	-	400 kHz	2.3V ~ 5.5V	-40°C ~ 85°C	-	-	Surface Mount	24-VFQFN Exposed Pad	24-TQFN (4x4)
PI4IOE5V6416RQ2LEX IC XPNDR 400KHZ I2C 24TSSOP Diodes Incorporated	8,210 In Stock 150,000 Factory	1 : ¥18.96000 Cut Tape (CT) 3,000 : ¥8.69357 Tape & Reel (TR)	-	Tape & Reel (TR) Cut Tape (CT) Digi-Reel®	Active	Not Verified	16	I2C	Yes	POR	Open Drain, Push-Pull	-	400 kHz	1.65V ~ 5.5V	-40°C ~ 105°C	Automotive	AEC-Q100	Surface Mount	24-TSSOP (0.173", 4.40mm Width)	24-TSSOP

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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.