TCA9539-Q1 Texas instruments

TCA9539-Q1

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TCA9539-Q1

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Описание

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. spacer

AEC-Q100 (Grade 1): Qualified for automotive applications
Functional Safety-Capable
- Documentation available to aid in functional safety system design
I²C to parallel port expander
Open-drain active-low interrupt output
Active-low reset input
5 V tolerant input and output ports
Compatible with most microcontrollers
400 kHz Fast I²C bus
Polarity inversion register
Internal power-on reset
No glitch on power up
Address by two hardware address pins for use of up to four devices
Latched outputs for directly driving LEDs
Latch-up performance exceeds 100 mA Per JESD 78, class II
ESD protection exceeds JESD 22
- 2000-V Human-body model (A114-A)
- 1000-V Charged-device model (C101)

Number of I/Os	16
Features	Configuration registers, Interrupt pin, Reset pin
Supply voltage (min) (V)	1.65
Supply voltage (max) (V)	3.6
Addresses	4
Rating	Automotive
Frequency (max) (MHz)	0.4
Operating temperature range (°C)	-40 to 125
TI functional safety category	Functional Safety-Capable