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/TI TSSOP-16 TCA9534APWR Low power input output (I/O) expander

TI TSSOP-16 TCA9534APWR Low power input output (I/O) expander

TCA9534A is a 16-pin device that provides 8-bit general-purpose parallel input and output (I/O) expansion for the two-wire bidirectional I 2C bus (or SMBus) protocol. The device can operate in a supply voltage range of 1.65V to 5.5V, allowing the use of various devices. The device supports 100kHz (standard mode) and 400kHz (fast mode) clock frequencies. When switches, sensors, buttons, LEDs, fans, and other similar devices require additional I/O, I/O expanders (such as TCA9534A) can provide a simple solution.


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    TI
  • Product Details

Description

TCA9534A is a 16-pin device that provides 8-bit general-purpose parallel input and output (I/O) expansion for the two-wire bidirectional I 2C bus (or SMBus) protocol. The device can operate in a supply voltage range of 1.65V to 5.5V, allowing the use of various devices. The device supports 100kHz (standard mode) and 400kHz (fast mode) clock frequencies. When switches, sensors, buttons, LEDs, fans, and other similar devices require additional I/O, I/O expanders (such as TCA9534A) can provide a simple solution.

The functions of TCA9534A include generating an interrupt on the INT pin. In this way, the master device knows when the input port status has changed. The hardware selectable address pins A0, A1, and A2 allow up to 8 TCA9534A devices to be on the same I 2C bus. The device can also be powered by power cycling to generate a power-on reset, thereby resetting to the default state. Device




Feature 

• Low standby current consumption

• I 2C to parallel port expander

• Open drain circuit low-level effective interrupt output

• 1.65V to 5.5V operating power supply voltage range

• I/O port that can withstand 5V voltage

• 400kHz fast I 2C bus 

• 3 hardware address pins can support up to 8 devices on I 2C/SMBus 

• Input and output configuration registers 

• Polarity inversion registers 

• Internal power-on reset 

• The channels used are configured as inputs at power-up 

• No glitch pulses when powering up 

• Noise filter on SCL/SDA input 

• Latch output with maximum high current drive capability, suitable for direct drive LED 

• Latch-off performance exceeds 100mA, meeting the requirements of JESD 78 Class II ) 

• Electrostatic discharge (ESD) protection performance exceeds the requirements of JESD 22 specification-2000V human body discharge model (A114-A)-1000V charging device model (C101)

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