A0
P17
P16
P15
P14
P13
24 22 21 20 19
SDA
RESET
A1
SCL
23
7 9 10 11 128
P00
P01
P02
P03
P04
P05
1
2
3
4
5
6
18
17
16
15
14
13
P10
P11
P06
P07
P12
GND
VCC
INT
Exposed
Center
Pad
INT
A1
RESET
P00
P01
P02
P03
P04
P05
P06
P07
GND
VCC
SDA
SCL
A0
P17
P16
P15
P14
P13
P12
P11
P10
24
23
22
21
20
19
18
17
16
15
14
13
1
2
3
4
5
6
7
8
9
10
11
12
TCA1116
www.ti.com
SCPS229 –SEPTEMBER 2011
LOW VOLTAGE 16-BIT I
2
C I/O EXPANDER
WITH INTERRUPT AND RESET
Check for Samples: TCA1116
1FEATURES
•I2C to Parallel Port Expander •Polarity Inversion Register
•Supports partial power down i.e. SDA and SCL •Configurable with up to four different I2C
are 5V tolerant (<1uA leakage) even when addresses using hardware pins
Vcc=0 •Directly drive LEDs using high current push
•Supports 1.8V I2C operation pull outputs
•Open-Drain Active-Low Interrupt Output •Latch-Up Performance Exceeds 100 mA Per
JESD 78, Class II
•Active-Low Reset Input
•ESD Protection Exceeds JESD 22
•I/O Ports are 5V tolerant
–2000-V Human-Body Model (A114-A)
•Low Standby-Current Consumption of
3μA Max –1000-V Charged-Device Model (C101)
•400-kHz Fast I2C Bus support
PW PACKAGE RTW PACKAGE
(TOP VIEW) (TOP VIEW)
The exposed center pad, if used, must be
connected as a secondary ground or left
electrically open.
DESCRIPTION
This 16-bit I/O expander for the two-line bidirectional bus (I2C) is designed for 1.65-V to 5.5-V VCC operation. It
provides general-purpose remote I/O expansion for most microcontroller families via the I2C interface [serial clock
(SCL), serial data (SDA)]. Two hardware pins (A0 and A1) are used to program and vary the fixed I2C address
and allow up to four devices to share the same I2C bus. The TCA1116 consists of two 8-bit Configuration (input
or output selection), Input Port, Output Port, and Polarity Inversion (active-high or active-low operation) registers.
At power-on, the I/Os are configured as inputs. The system master can enable the I/Os as either inputs or
outputs by writing to the I/O configuration bits. The data for each input or output is kept in the corresponding
Input or output register. The polarity of the Input Port register can be inverted with the Polarity Inversion register.
All registers can be read by the system master.
1Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of Texas
Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet.
PRODUCTION DATA information is current as of publication date. Copyright ©2011, Texas Instruments Incorporated
Products conform to specifications per the terms of the Texas
Instruments standard warranty. Production processing does not
necessarily include testing of all parameters.
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 I2C/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 I2C 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
TAPACKAGE(1) (2) ORDERABLE PART NUMBER TOP-SIDE MARKING
TSSOP –PW Reel of 2000 TCA1116PWR RL116
–40°C to 85°CQFN –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.
2Submit Documentation Feedback Copyright ©2011, Texas Instruments Incorporated
Product Folder Link(s): TCA1116
To request a full data sheet, please send an email to:
ual_i2c@list.ti.com
PACKAGE OPTION ADDENDUM
www.ti.com 28-Aug-2012
Addendum-Page 1
PACKAGING INFORMATION
Orderable Device Status (1) Package Type Package
Drawing Pins Package Qty Eco Plan (2) Lead/
Ball Finish MSL Peak Temp (3) Samples
(Requires Login)
TCA1116PWR ACTIVE TSSOP PW 24 2000 Green (RoHS
& no Sb/Br) CU NIPDAU Level-1-260C-UNLIM
TCA1116RTWR ACTIVE WQFN RTW 24 3000 Green (RoHS
& no Sb/Br) CU NIPDAU Level-1-260C-UNLIM
(1) The marketing status values are defined as follows:
ACTIVE: Product device recommended for new designs.
LIFEBUY: TI has announced that the device will be discontinued, and a lifetime-buy period is in effect.
NRND: Not recommended for new designs. Device is in production to support existing customers, but TI does not recommend using this part in a new design.
PREVIEW: Device has been announced but is not in production. Samples may or may not be available.
OBSOLETE: TI has discontinued the production of the device.
(2) Eco Plan - The planned eco-friendly classification: Pb-Free (RoHS), Pb-Free (RoHS Exempt), or Green (RoHS & no Sb/Br) - please check http://www.ti.com/productcontent for the latest availability
information and additional product content details.
TBD: The Pb-Free/Green conversion plan has not been defined.
Pb-Free (RoHS): TI's terms "Lead-Free" or "Pb-Free" mean semiconductor products that are compatible with the current RoHS requirements for all 6 substances, including the requirement that
lead not exceed 0.1% by weight in homogeneous materials. Where designed to be soldered at high temperatures, TI Pb-Free products are suitable for use in specified lead-free processes.
Pb-Free (RoHS Exempt): This component has a RoHS exemption for either 1) lead-based flip-chip solder bumps used between the die and package, or 2) lead-based die adhesive used between
the die and leadframe. The component is otherwise considered Pb-Free (RoHS compatible) as defined above.
Green (RoHS & no Sb/Br): TI defines "Green" to mean Pb-Free (RoHS compatible), and free of Bromine (Br) and Antimony (Sb) based flame retardants (Br or Sb do not exceed 0.1% by weight
in homogeneous material)
(3) MSL, Peak Temp. -- The Moisture Sensitivity Level rating according to the JEDEC industry standard classifications, and peak solder temperature.
Important Information and Disclaimer:The information provided on this page represents TI's knowledge and belief as of the date that it is provided. TI bases its knowledge and belief on information
provided by third parties, and makes no representation or warranty as to the accuracy of such information. Efforts are underway to better integrate information from third parties. TI has taken and
continues to take reasonable steps to provide representative and accurate information but may not have conducted destructive testing or chemical analysis on incoming materials and chemicals.
TI and TI suppliers consider certain information to be proprietary, and thus CAS numbers and other limited information may not be available for release.
In no event shall TI's liability arising out of such information exceed the total purchase price of the TI part(s) at issue in this document sold by TI to Customer on an annual basis.
TAPE AND REEL INFORMATION
*All dimensions are nominal
Device Package
Type Package
Drawing Pins SPQ Reel
Diameter
(mm)
Reel
Width
W1 (mm)
A0
(mm) B0
(mm) K0
(mm) P1
(mm) W
(mm) Pin1
Quadrant
TCA1116PWR TSSOP PW 24 2000 330.0 16.4 6.95 8.3 1.6 8.0 16.0 Q1
TCA1116RTWR WQFN RTW 24 3000 330.0 12.4 4.25 4.25 1.15 8.0 12.0 Q2
PACKAGE MATERIALS INFORMATION
www.ti.com 28-Aug-2012
Pack Materials-Page 1
*All dimensions are nominal
Device Package Type Package Drawing Pins SPQ Length (mm) Width (mm) Height (mm)
TCA1116PWR TSSOP PW 24 2000 367.0 367.0 38.0
TCA1116RTWR WQFN RTW 24 3000 367.0 367.0 35.0
PACKAGE MATERIALS INFORMATION
www.ti.com 28-Aug-2012
Pack Materials-Page 2
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