DESCRIPTION/ORDERING INFORMATION (CONTINUED)

TCA9535

The TCA9535 open-drain interrupt (INT) output is activated when any input state differs from its corresponding

Input Port register state and is used to indicate to the system master that an input state has changed.

INT can be connected to the interrupt input of a microcontroller. By sending an interrupt signal on this line, the

remote I/O can inform the microcontroller if there is incoming data on its ports without having to communicate via

The device outputs (latched) have high-current drive capability for directly driving LEDs. The device has low

current consumption.

enhancements.

The TCA9535 is identical to the PCA9555, except for the removal of the internal I/O pullup resistor, which greatly

reduces power consumption when the I/Os are held low.

PCA9555, PCF8575, PCF8575C, and PCF8574, allowing up to eight of these devices in any combination to

ORDERING INFORMATION

ORDERABLE PART NUMBER

TOP-SIDE MARKING

TSSOP – PW

Reel of 2000

TCA9535PWR

PW535

–40°C to 85°C

QFN – RTW

Reel of 3000

TCA9535RTWR

PW535

(1)

Package drawings, thermal data, and symbolization are available at www.ti.com/packaging.

(2)

For the most current package and ordering information, see the Package Option Addendum at the end of this document, or see the TI

website at www.ti.com.

2

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Product Folder Link(s): TCA9535