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	Mounting Type	Package / Case	Supplier Device Package

STMPE2401TBR IC XPNDR 400KHZ I2C 36TFBGA STMicroelectronics	8,061 In Stock	1 : ¥24.14000 Cut Tape (CT) 3,000 : ¥12.13038 Tape & Reel (TR)	Xpander Logic™	Tape & Reel (TR) Cut Tape (CT) Digi-Reel®	Obsolete	Not Verified	24	I2C	Yes	Keypad Controller, POR, PWM	Push-Pull	4mA	400 kHz	1.65V ~ 1.95V	-40°C ~ 85°C	Surface Mount	36-TFBGA	36-TFBGA (3.5x3.5)
STMPE801QTR IC XPNDR 400KHZ I2C 16QFN STMicroelectronics	0 In Stock	Obsolete	Xpander Logic™	Tape & Reel (TR) Cut Tape (CT) Digi-Reel®	Obsolete	Not Verified	8	I2C	Yes	POR	Push-Pull	-	400 kHz	1.65V ~ 3.6V	-40°C ~ 85°C	Surface Mount	16-UFQFN	16-QFN (2.6x1.8)
STMPE801MTR IC XPNDR 400KHZ I2C 16SO STMicroelectronics	0 In Stock	1 : ¥19.54000 Cut Tape (CT) 2,500 : ¥8.93236 Tape & Reel (TR)	Xpander Logic™	Tape & Reel (TR) Cut Tape (CT) Digi-Reel®	Obsolete	Not Verified	8	I2C	Yes	POR	Push-Pull	-	400 kHz	1.65V ~ 3.6V	-40°C ~ 85°C	Surface Mount	16-SOIC (0.154", 3.90mm Width)	16-SO
STMPE2403TBR IC XPNDR 400KHZ I2C 36TFBGA STMicroelectronics	0 In Stock	Obsolete	Xpander Logic™	Tape & Reel (TR)	Obsolete	Not Verified	24	I2C	Yes	Keypad Controller, POR, PWM	Push-Pull	-	400 kHz	1.65V ~ 1.95V	-40°C ~ 85°C	Surface Mount	36-TFBGA	36-TFBGA (3.5x3.5)
STMPE1600QTR IC XPNDR 400KHZ I2C 24QFN STMicroelectronics	0 In Stock	Obsolete	Xpander Logic™	Tape & Reel (TR) Cut Tape (CT) Digi-Reel®	Obsolete	Not Verified	16	I2C	Yes	POR	Open Drain	4mA	400 kHz	1.65V ~ 3.6V	-40°C ~ 85°C	Surface Mount	24-VFQFN Exposed Pad	24-QFN
STMPE1601TBR IC XPNDR 400KHZ I2C 25TFBGA STMicroelectronics	0 In Stock	Obsolete	Xpander Logic™	Tape & Reel (TR) Cut Tape (CT) Digi-Reel®	Obsolete	Not Verified	16	I2C	Yes	Keypad Controller, POR, PWM	Open Drain	4mA	400 kHz	1.65V ~ 3.6V	-40°C ~ 85°C	Surface Mount	25-TFBGA	25-TFBGA (3x3)
STMPE1801BJR IC XPNDR 400KHZ I2C 25FLIPCHIP STMicroelectronics	0 In Stock	Obsolete	Xpander Logic™	Tape & Reel (TR) Cut Tape (CT) Digi-Reel®	Obsolete	Not Verified	18	I2C	Yes	Keypad Controller, POR	Push-Pull	4mA	400 kHz	1.65V ~ 3.6V	-40°C ~ 85°C	Surface Mount	25-WFBGA, WLCSP	25-FlipChip (2x2)

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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.