Specification	TCA9539RGER

Clock Frequency	400 kHz
Current - Output Source/Sink [custom]	10 mA
Current - Output Source/Sink [custom]	25 mA
Features	POR
Interface	I2C, SMBus
Interrupt Output	True
Mounting Type	Surface Mount
Number of I/O	16
Operating Temperature [Max]	85 °C
Operating Temperature [Min]	-40 °C
Output Type	Push-Pull
Package / Case	24-VFQFN Exposed Pad
Supplier Device Package	24-VQFN (4x4)
Voltage - Supply [Max]	5.5 V
Voltage - Supply [Min]	1.65 V

TCA9539 Series

Part	Current - Output Source/Sink [custom]	Current - Output Source/Sink [custom]	Supplier Device Package	Mounting Type	Output Type	Features	Clock Frequency	Interface	Operating Temperature [Max]	Operating Temperature [Min]	Number of I/O	Package / Case	Voltage - Supply [Max]	Voltage - Supply [Min]	Grade	Package / Case	Qualification
Texas Instruments TCA9539RGER	10 mA	25 mA	24-VQFN (4x4)	Surface Mount	Push-Pull	POR	400 kHz	I2C SMBus	85 °C	-40 °C	16	24-VFQFN Exposed Pad	5.5 V	1.65 V
Texas Instruments TCA9539QPWRQ1	10 mA	25 mA	24-TSSOP	Surface Mount	Push-Pull	POR	400 kHz	I2C SMBus	125 °C	-40 °C	16	24-TSSOP	3.6 V	1.65 V	Automotive	0.173 in 4.4 mm	AEC-Q100
Texas Instruments TCA9539PWR	10 mA	25 mA	24-TSSOP	Surface Mount	Push-Pull	POR	400 kHz	I2C SMBus	85 °C	-40 °C	16	24-TSSOP	5.5 V	1.65 V		0.173 in 4.4 mm

Pricing

Prices provided here are for design reference only. For realtime values and availability, please visit the distributors directly

Distributor	Package	Quantity	$

Digikey	Cut Tape (CT)	1	$ 2.70
		10	$ 1.74
		25	$ 1.49
		100	$ 1.21
		250	$ 1.07
		500	$ 0.99
		1000	$ 0.92
	Digi-Reel®	1	$ 2.70
		10	$ 1.74
		25	$ 1.49
		100	$ 1.21
		250	$ 1.07
		500	$ 0.99
		1000	$ 0.92
	Tape & Reel (TR)	3000	$ 0.82
		6000	$ 0.78
		9000	$ 0.76
Newark	Each (Supplied on Cut Tape)	1	$ 2.14
		10	$ 2.05
		25	$ 1.94
		50	$ 1.86
		100	$ 1.78
		250	$ 1.73
		500	$ 1.68
		1000	$ 1.65
Texas Instruments	LARGE T&R	1	$ 1.32
		100	$ 1.09
		250	$ 0.78
		1000	$ 0.59

Description

General part information

TCA9539 Series

The TCA9539 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 (VCC) range from 1.65 V to 5.5 V. The device supports 100-kHz (I2C Standard mode) and 400-kHz (I2C Fast mode) clock frequencies. I/O expanders such as the TCA9539 provide a simple solution when additional I/Os are needed for switches, sensors, push-buttons, LEDs, fans, and other similar devices.

The features of the TCA9539 include an interrupt that is generated on theINTpin whenever an input port changes state. The A0 and A1 hardware selectable address pins allow up to four TCA9539 devices on the same I2C bus. The device can be reset to its default state by cycling the power supply and causing a power-on-reset. Also, the TCA9539 has a hardwareRESETpin that can be used to reset the device to its default state.