See datasheet for actual packaging/pinout drawings

Packaging

Package | PIN:

PW | 24

Temp:

Q (-40 to 125)

ECO Plan:

Green (RoHS & no Sb/Br)

TCA9539QPWRQ1


Automotive Low-Voltage 16-Bit I2C and SMBus Low-Power I/O Expander

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Qty.Price
1 - 9 $ 1.59
10 - 24 $ 1.44
25 - 99 $ 1.29
100 - 249 $ 1.16
250 - 499 $ 1.04
500 - 749 $ 0.86
750 - 999 $ 0.71
1000 - 9999 $ 0.61

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Texas Instruments TCA9539QPWRQ1

The TCA9539-Q1 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 3.6 V. The device supports 100-kHz (I2C Standard mode) and 400-kHz (I2C Fast mode) clock frequencies. I/O expanders such as the TCA9539-Q1 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-Q1 include an interrupt that is generated on the INT pin whenever an input port changes state. The A0 and A1 hardware selectable address pins allow up to four TCA9539-Q1 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-Q1 has a hardware RESET pin that can be used to reset the device to its default state.

The TCA9539-Q1 I2C I/O expander is qualified for automotive applications.

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