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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 (EUR) 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: €1.75 1,785In 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	1,785In Stock	Cut Tape €1.75 €1.30 €1.19 €1.06 Reel €0.894 View €0.998 €0.963 €0.937 €0.86 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: €2.25 375In 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	375In Stock	Cut Tape €2.25 €1.68 €1.53 €1.38 Reel €1.29 View €1.22 €1.17 €1.15 €1.14 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 Remt 16Bit I2C SMBus Lo-Pwr I/O Expndr TCA9535PWR Texas Instruments 1: €1.68 151In 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	151In Stock 32,000On Order On Order Ship Dates Mfr. No: TCA9535PWR Stock: 151 Can Dispatch Immediately On Order: 18,000 Expected 10/12/2026 14,000 Expected 28/01/2027 Factory Lead Time: 20 Weeks	Cut Tape €1.68 €1.23 €1.12 €0.998 Reel €0.845 View €0.937 €0.903 €0.826 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: €1.70 56,265On 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	56,265On Order On Order Ship Dates Mfr. No: TCA9535RGER Stock: 0 On Order: 26,265 Expected 24/12/2026 3,000 Expected 31/12/2026 27,000 Expected 07/01/2027 Factory Lead Time: 20 Weeks	Cut Tape €1.70 €1.26 €1.14 €1.02 Reel €0.832 View €0.946 €0.912 €0.816 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: €1.47 76,660On 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	76,660On Order On Order Ship Dates Mfr. No: TCA9535RTWR Stock: 0 On Order: 31,660 Expected 17/12/2026 45,000 Expected 14/10/2027 Factory Lead Time: 20 Weeks	Cut Tape €1.47 €1.08 €0.98 €0.869 View Reel €0.764 €0.799 €0.769 €0.764 €0.764 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
	Interface - I/O Expanders 16-bit 1.65- to 5.5- V I2C/SMBus I/O exp TCA9535MRGER Texas Instruments 1: €1.75 8,965On 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	8,965On Order On Order Ship Dates Mfr. No: TCA9535MRGER Stock: 0 On Order: 2,965 Pending 6,000 Expected 25/02/2027 Factory Lead Time: 20 Weeks	Cut Tape €1.75 €1.30 €1.19 €1.06 Reel €0.877 View €0.998 €0.963 €0.937 €0.857 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