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TCA9535 Low-Power I/O Expander

Texas Instruments TCA9535 Low-Power I/O Expander is a 24-pin device that provides 16 bits of general-purpose parallel input and output (I/O) expansion for the two-line bidirectional I²C bus or SMBus protocol. The device can operate with a power supply voltage ranging from 1.65V to 5.5V. The Texas Instruments TCA9535 consists of two 8-bit configurations (input or output selection), input port, output port, and polarity inversion (active-high or active-low operation) registers. When the power is turned on, the I/Os are configured as inputs. The system master can enable the I/Os as inputs or outputs by writing to the I/O configuration bits.

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Select	Image	Part #	Mfr.	Description	Datasheet	Availability	Pricing (IDR) 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
	Interface - I/O Expanders Remote 16bit I2C LP I/O Expander A 595-T A 595-TCA9535DBT TCA9535DBR Texas Instruments 1: Rp37.426 1.812In Stock	Mfr. Part No. TCA9535DBR Mouser Part No 595-TCA9535DBR	Texas Instruments	Interface - I/O Expanders Remote 16bit I2C LP I/O Expander A 595-T A 595-TCA9535DBT Learn More about Texas Instruments ti tca9535 expander	Datasheet	1.812In Stock	Cut Tape Rp37.426 Rp27.702 Rp25.317 Rp22.566 Reel Rp19.080 View Rp21.281 Rp20.548 Rp19.997 Rp18.346 MouseReel Available	Min.: 1 Mult.: 1 : 2.000			TCA9535	SMD/SMT	SSOP-24	I2C, Serial, SMBus	16 I/O	With Interrupt	5.5 V	5.5 V	400 kHz	- 40 C	+ 85 C	Reel, Cut Tape, MouseReel	2 kV
	Interface - I/O Expanders 16-bit 1.65- to 5.5- V I2C/SMBus I/O exp A 595-TCA9535DBR TCA9535DBT Texas Instruments 1: Rp48.067 462In Stock	Mfr. Part No. TCA9535DBT Mouser Part No 595-TCA9535DBT	Texas Instruments	Interface - I/O Expanders 16-bit 1.65- to 5.5- V I2C/SMBus I/O exp A 595-TCA9535DBR Learn More about Texas Instruments ti tca9535 expander	Datasheet	462In Stock	Cut Tape Rp48.067 Rp35.775 Rp32.656 Rp29.354 Reel Rp27.519 View Rp26.051 Rp24.951 Rp24.584 Rp24.217 MouseReel Available	Min.: 1 Mult.: 1 : 250			TCA9535	SMD/SMT	SSOP-24	I2C, Serial, SMBus	16 I/O	With Interrupt	1.65 V	5.5 V	400 kHz	- 40 C	+ 85 C	Reel, Cut Tape, MouseReel	2 kV
	Interface - I/O Expanders 16-bit 1.65- to 5.5- V I2C/SMBus I/O exp TCA9535MRGER Texas Instruments 1: Rp38.527 11In Stock 9.000On Order	Mfr. Part No. TCA9535MRGER Mouser Part No 595-TCA9535MRGER	Texas Instruments	Interface - I/O Expanders 16-bit 1.65- to 5.5- V I2C/SMBus I/O exp Learn More about Texas Instruments ti tca9535 expander	Datasheet	11In Stock 9.000On Order On Order Ship Dates Mfr. No: TCA9535MRGER Stock: 11 Can Dispatch Immediately On Order: 3.000 Pending 6.000 Expected 25/02/2027 Factory Lead Time: 16 Weeks	Cut Tape Rp38.527 Rp28.436 Rp25.868 Rp23.116 Reel Rp18.896 View Rp22.199 Rp18.529 MouseReel Available	Min.: 1 Mult.: 1 : 3.000			TCA9535	SMD/SMT	VQFN-24	I2C, Serial, SMBus	16 I/O	With Interrupt	1.65 V	5 V	400 kHz	- 40 C	+ 85 C	Reel, Cut Tape, MouseReel	2 kV
	Interface - I/O Expanders Remt 16Bit I2C SMBus Lo-Pwr I/O Expndr TCA9535PWR Texas Instruments 1: Rp35.775 425In Stock 32.000On Order	Mfr. Part No. TCA9535PWR Mouser Part No 595-TCA9535PWR	Texas Instruments	Interface - I/O Expanders Remt 16Bit I2C SMBus Lo-Pwr I/O Expndr Learn More about Texas Instruments ti tca9535 expander	Datasheet	425In Stock 32.000On Order On Order Ship Dates Mfr. No: TCA9535PWR Stock: 425 Can Dispatch Immediately On Order: 18.000 Expected 10/12/2026 14.000 Expected 28/01/2027 Factory Lead Time: 16 Weeks	Cut Tape Rp35.775 Rp26.235 Rp23.850 Rp21.281 Reel Rp18.016 View Rp19.997 Rp19.263 Rp17.612 MouseReel Available	Min.: 1 Mult.: 1 : 2.000			TCA9535	SMD/SMT	TSSOP-24	I2C, Serial, SMBus	16 I/O	With Interrupt	1.65 V	5.5 V	400 kHz	- 40 C	+ 85 C	Reel, Cut Tape, MouseReel	2 kV
	Interface - I/O Expanders Remote 16bit I2C and SMBux TCA9535RGER Texas Instruments 1: Rp36.325 59.265On Order	Mfr. Part No. TCA9535RGER Mouser Part No 595-TCA9535RGER	Texas Instruments	Interface - I/O Expanders Remote 16bit I2C and SMBux Learn More about Texas Instruments ti tca9535 expander	Datasheet	59.265On Order On Order Ship Dates Mfr. No: TCA9535RGER Stock: 0 On Order: 29.265 Expected 24/12/2026 3.000 Expected 31/12/2026 27.000 Expected 07/01/2027 Factory Lead Time: 16 Weeks	Cut Tape Rp36.325 Rp26.785 Rp24.400 Rp21.832 Reel Rp17.759 View Rp20.181 Rp19.447 Rp17.410 MouseReel Available	Min.: 1 Mult.: 1 : 3.000			TCA9535	SMD/SMT	VQFN-24	I2C, Serial, SMBus	16 I/O	With Interrupt	1.65 V	5 V	400 kHz	- 40 C	+ 85 C	Reel, Cut Tape, MouseReel	2 kV
	Interface - I/O Expanders Rem 16B I2C & SMBus Low-Pwr I/O Expander TCA9535RTWR Texas Instruments 1: Rp31.372 77.499On Order	Mfr. Part No. TCA9535RTWR Mouser Part No 595-TCA9535RTWR	Texas Instruments	Interface - I/O Expanders Rem 16B I2C & SMBus Low-Pwr I/O Expander Learn More about Texas Instruments ti tca9535 expander	Datasheet	77.499On Order On Order Ship Dates Mfr. No: TCA9535RTWR Stock: 0 On Order: 32.499 Expected 17/12/2026 45.000 Expected 15/01/2027 Factory Lead Time: 16 Weeks	Cut Tape Rp31.372 Rp22.933 Rp20.914 Rp18.529 View Reel Rp16.291 Rp17.043 Rp16.401 Rp16.291 Rp16.291 MouseReel Available	Min.: 1 Mult.: 1 Max.: 1.001 : 3.000			TCA9535	SMD/SMT	WQFN-24	I2C, Serial, SMBus	16 I/O	With Interrupt	1.65 V	5.5 V	400 kHz	- 40 C	+ 85 C	Reel, Cut Tape, MouseReel	2 kV