EVALUATION KIT AVAILABLE
MAX13036
Contact Monitor and Level Shifter
General Description
Features
● +6V to +26V Operating Voltage Range
The MAX13036 contact monitor and level shifter monitors
and debounces eight remote mechanical switches and
asserts an interrupt (INT) if a switch changes state. The
state of each switch is sampled through an SPI interface
by reading the status register and any switch can be
prohibited from asserting an interrupt by writing to the
command register. Four of the switch inputs are intended
for ground-connected switches (IN0–IN3), and the other
four inputs (IN4–IN7), are programmable in groups of
two for either ground-connected or battery-connected
switches. Two switch inputs (IN0, IN1) have direct level-
shifted outputs (DO0, DO1) to be used for PWM or other
timing-based signals.
● +42V Compatibility on BAT
● Inputs Withstand Reverse Battery
● Withstands Dynamic Battery Voltage Drop While V
L
is Present
● Ultra-Low Operating Current 17μA (typ) in Scan
Mode
● Resistor-Adjustable Switching Hysteresis
● CMOS-Compatible Logic Outputs (+2.7V min)
● Built-In Switch Debouncing
● Interrupt Output
Switch input thresholds are set to 50% of the voltage
applied to BATREF. The threshold hysteresis is set by
connecting an external resistor from HYST to ground. The
MAX13036 supplies an adjustable wetting current to each
closed switch to clean mechanical switch contacts that
are exposed to adverse conditions.
● Immunity to Transients
● High Modularity
● Thermal Protection
● ±8kV HBM ESD Protection on IN0–IN7 Without
External Components
The MAX13036 operates with a +6V to +26V battery
voltage applied to BAT. A separate +2.7V to +5.5V
● Two Inputs (IN0, IN1) Programmable as Direct
Outputs
logic supply input (V ) sets the interface voltage. The
L
● Four Inputs (IN4–IN7) Programmable for BAT or
MAX13036 is available in a 5mm x 5mm 28-pin TQFN
package and operates over the -40°C to +125°C tem-
perature range.
GND Related Switches
Ordering Information
Applications
Control ECUs
PART
TEMP RANGE
PIN-PACKAGE
Pin Configuration
28 TQFN-EP*
(5mm x 5mm)
MAX13036ATI+
-40°C to +125°C
TOP VIEW
+Denotes a lead(Pb)-free/RoHS-compliant package.
*EP = Exposed pad.
DO0 22
SD 23
14 INT
13 OT
*EP
GND 24
BATREF 25
BAT 26
12 GND
11 TDEB
10 WET
Typical Application Circuit appears at end of data sheet.
MAX13036
27
9
8
N.C.
HYST
N.C.
+
INO 28
TQFN
*CONNECT EXPOSED PADDLE TO GROUND
19-0808; Rev 1; 2/15