19-3984; Rev 0; 1/06
Wired Remote Controllers
General Description
Features
The MAX11041/MAX11042 wired remote controllers
convert up to six or 30 different pushbuttons into an
I2C* register. Together with low-cost pushbutton switch-
es and 1% resistors, the MAX11041/MAX11042 are
total solutions over a single-wire interface. A wired
remote controller easily piggybacks to a standard
3.5mm headphone jack using a fourth contact or one of
the audio signals.
♦ Detect Up to Six (MAX11042) or 30 (MAX11041)
Different Keys and Jack Insertion/Removal
♦ Work with Either 32Ω or 16Ω Headphones
♦ Add Remote-Control Functionality to Devices
Using a Simple Resistor and Switch Array
♦ Low-Power Operation Consuming a Supply
Current of Only 5µA (typ)
To conserve battery life, the MAX11041/MAX11042
consume only 5µA (typ) while reading keypresses in
real time without microprocessor (µP) polling. The
devices send the debounced keypress along with key
duration to the application processor over the I2C inter-
face. An 8-word FIFO buffer records up to four key-
press events to allow plenty of time for the application
processor to respond to the MAX11041/MAX11042.
♦ Work with Standard 2.5mm or 3.5mm 4-Pin
Headphone Jacks
♦ Support Hold Function to Lockout Keys
♦ 100kHz/400kHz I2C Interface
♦ Single 1.6V to 3.6V Supply Voltage Range
♦
15kV ESD Protection (IEC 61000-4-2)
The MAX11041/MAX11042 include 15kꢀ ꢁES protec-
tion devices on the FORCꢁ and EꢁNEꢁ inputs to ensure
IꢁC 61000-4-2 compliance without any external
ꢁES devices.
Ordering Information
TEMP
PIN-
PKG
PART
MAX11041ꢁTC
RANGE
PACKAGE
CODE
The MAX11041/MAX11042 are available in 12-bump
UCEP™ and 12-pin TQFN packages. The devices are
specified over the extended temperature range
(-40°C to +85°C).
-40°C to +85°C 12 TQFN-ꢁP* T1244-4
12 UCEP
MAX11041ꢁBC-T** -40°C to +85°C
B16-5
(4 x 4 Array)
MAX11042ꢁTC**
-40°C to +85°C 12 TQFN-ꢁP* T1244-4
12 UCEP
Applications
PSAs
MAX11042ꢁBC-T** -40°C to +85°C
B16-5
Multimedia Controls for
Multimedia-ꢁnabled
Cell Phones
(4 x 4 Array)
Sigital Etill Cameras
*EP = Exposed pad.
**Future product—contact factory for availability.
PSA Accessory
Keyboards
Keyboard ꢁncoder for
Elider, Flip, and other
Cell Phones
Pin Configurations
Multimedia Sesktop
Epeakers
TOP VIEW
Portable Media Players
MP3, CS, SꢀS Players
Portable Game
Consoles
9
8
7
A0
10
11
6
5
INT
A1
V
DD
MAX11041
MAX11042
*Purchase of I2C components from Maxim Integrated Products,
Inc., or one of its sublicensed Associated Companies, conveys
a license under the Philips I2C Patent Rights to use these com-
ponents in an I2C system, provided that the system conforms
to the I2C Standard Specification as defined by Philips.
12
N.C.
4
FORCE
1
2
3
UCSP is a trademark of Maxim Integrated Products, Inc.
THIN QFN
(4mm x 4mm x 0.6mm)
EXPOSED PAD CONNECTED TO GND.
Pin Configurations continued at end of data sheet.
________________________________________________________________ Maxim Integrated Products
1
For pricing, delivery, and ordering information, please contact Maxim/Dallas Direct! at
1-888-629-4642, or visit Maxim’s website at www.maxim-ic.com.