Interface - I/O Expanders

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TCAL9538 8-Bit I/O Expanders

Texas Instruments TCAL9538 8-Bit I/O Expanders are developed for two-line bidirectional I²C bus (or SMBus) protocol and provide a 1.08V to 3.6V V_CC operation. The TCAL9538 supports 100kHz (Standard-mode), 400kHz (Fast-mode), and 1MHz (fast-mode-plus) I²C clock frequencies. The I/O expanders offer a simple solution when additional I/Os are required for sensors, switches, push buttons, LEDs, fans, and more.

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Image	Part #	Mfr.	Description	Datasheet	Availability	Pricing (JPY) Filter the results in the table by unit price based on your quantity.	Qty.	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
Interface - I/O Expanders ULTRA LOW VOLTAGE AG ILE I/O EXPANDER TCAL9538PWR Texas Instruments 1: ¥330.5 3,044In Stock	Mfr. Part # TCAL9538PWR Mouser Part # 595-TCAL9538PWR	Texas Instruments	Interface - I/O Expanders ULTRA LOW VOLTAGE AG ILE I/O EXPANDER Learn More about Texas Instruments ti tcal9538 expanders	Datasheet	3,044In Stock	¥330.5 ¥242.5 ¥220.9 ¥197.7 View ¥186 ¥179.4 ¥177.7 ¥160.5 ¥157.1	Min.: 1 Mult.: 1	TCAL9538	SMD/SMT	TSSOP-16	I2C, Serial, SMBus	9 I/O	With Interrupt	1.08 V	3.6 V	1 MHz	- 40 C	+ 125 C
Interface - I/O Expanders ULTRA LOW VOLTAGE AG ILE I/O EXPANDER TCAL9538RSVR Texas Instruments 1: ¥318.9 6,835In Stock 9,000Expected 3/29/2027	Mfr. Part # TCAL9538RSVR Mouser Part # 595-TCAL9538RSVR	Texas Instruments	Interface - I/O Expanders ULTRA LOW VOLTAGE AG ILE I/O EXPANDER Learn More about Texas Instruments ti tcal9538 expanders	Datasheet	6,835In Stock 9,000Expected 3/29/2027	Cut Tape ¥318.9 ¥235.9 ¥214.3 ¥191 Reel ¥160.5 View ¥179.4 ¥172.7 ¥157.1 MouseReel Available	Min.: 1 Mult.: 1 : 3,000	TCAL9538	SMD/SMT	UQFN-16	I2C, Serial, SMBus	9 I/O	With Interrupt	1.08 V	3.6 V	1 MHz	- 40 C	+ 125 C	Reel, Cut Tape, MouseReel
Interface - I/O Expanders ULTRA LOW VOLTAGE AG ILE I/O EXPANDER TCAL9538DTUR Texas Instruments 1: ¥375.4 3In Stock 6,000Expected 3/11/2027	Mfr. Part # TCAL9538DTUR Mouser Part # 595-TCAL9538DTUR	Texas Instruments	Interface - I/O Expanders ULTRA LOW VOLTAGE AG ILE I/O EXPANDER Learn More about Texas Instruments ti tcal9538 expanders	Datasheet	3In Stock 6,000Expected 3/11/2027	¥375.4 ¥279 ¥254.1 ¥227.6 View ¥214.3 ¥207.6 ¥204.3 ¥191 ¥187.7	Min.: 1 Mult.: 1	TCAL9538	SMD/SMT	X2QFN-16	I2C, Serial, SMBus	9 I/O	With Interrupt	1.08 V	3.6 V	1 MHz	- 40 C	+ 125 C