Datasheet

TCA1116

SCPS229 –SEPTEMBER 2011

www.ti.com

This integrated circuit can be damaged by ESD. Texas Instruments recommends that all integrated circuits be handled with

appropriate precautions. Failure to observe proper handling and installation procedures can cause damage.

ESD damage can range from subtle performance degradation to complete device failure. Precision integrated circuits may be more

susceptible to damage because very small parametric changes could cause the device not to meet its published specifications.

DESCRIPTION CONTINUED

The system master can reset the TCA1116 in the event of a time-out or other improper operation by asserting a

low in the RESET input. The power-on reset puts the registers in their default state and initializes the I

C/SMBus

state machine. Asserting RESET causes the same reset/initialization to occur without depowering the part.

The TCA1116 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 I

C bus. Thus, the TCA1116 can remain a simple slave device.

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

current consumption.

ORDERING INFORMATION

PACKAGE

(1) (2)

ORDERABLE PART NUMBER TOP-SIDE MARKING

TSSOP – PW Reel of 2000 TCA1116PWR RL116

–40°C to 85°C

QFN – RTW Reel of 3000 TCA1116RTWR RL116

(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.

Product Folder Link(s): TCA1116