TCAL9539R/TCAL9539R-Q1 I2C-Bus/SMBus I/O Expander

Texas Instruments TCAL9539R/TCAL9539R-Q1 I2C-Bus/SMBus I/O Expander provides general-purpose output (I/O) and parallel input expansion for the two-line bidirectional SMBus or I2C bus protocol and is designed for 1.08V to 3.6V VCC operation. The device supports 100kHz (Standard-Mode), 400kHz (Fast-Mode), and 1MHz (Fast-Mode-Plus) I2C clock frequencies. The TCAL9539R/TCAL9539R-Q1 I/O expanders provide a simple solution when additional I/Os are needed for sensors, switches, push-buttons, LEDs, fans, etc.

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Description Datasheet Availability Pricing (RON) 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
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ESD Protection
Texas Instruments Interface - I/O Expanders 16-bit I2C/SMBus I/O expander with inter
Datasheet
2.217In Stock
MouseReel Available
Min.: 1
Mult.: 1
Reel: 3.000

TCAL9539R SMD/SMT TSSOP-24 I2C 16 I/O With Interrupt 1.08 V 3.6 V 1 MHz + 125 C - 40 C Reel, Cut Tape, MouseReel 2 kV
Texas Instruments Interface - I/O Expanders 16-bit low-voltage I C-bus and SMBus I/O
Datasheet
4.951In Stock
MouseReel Available
Min.: 1
Mult.: 1
Reel: 5.000

TCAL9539 SMD/SMT WQFN-24 I2C, Serial 16 I/O With Interrupt 1.08 V 3.6 V 1 MHz - 40 C + 125 C Reel, Cut Tape, MouseReel
Texas Instruments Interface - I/O Expanders Automotive 16-bit lo w voltage I C/SMBus
Datasheet
2.099In Stock
10.000Expected 2/17/2026
MouseReel Available
Min.: 1
Mult.: 1
Reel: 5.000

TCAL9539 SMD/SMT WQFN-24 I2C, Serial 16 I/O With Interrupt 1.08 V 3.6 V 1 MHz - 40 C + 125 C AEC-Q100 Reel, Cut Tape, MouseReel