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MAX6756UKTD3+TMAIXMN/a2500avaiLow-Power, Single/Dual-Voltage Window Detectors
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MAX6756UKTD3+T-MAX6756UKWD3+T-MAX6760TALTD3+-MAX6763UT+
Low-Power, Single/Dual-Voltage Window Detectors
General Description
The MAX6754–MAX6764 low-power window detec-
tors monitor undervoltage/overvoltage conditions on
system power supplies. These devices assert when the
monitored voltage is under the undervoltage and/or over
the overvoltage thresholds.
The MAX6754–MAX6759/MAX6763/MAX6764 monitor
a single voltage. The MAX6760/MAX6761/MAX6762
monitor dual-voltage systems. The MAX6754/MAX6755/
MAX6756 provide a single undervoltage/overvoltage
output and the MAX6757–MAX6764 provide independent
undervoltage and overvoltage outputs. The outputs are
available in push-pull or open-drain configurations.
The MAX6754–MAX6762 offer factory-fixed voltage
thresholds for monitoring system voltages from 0.9V to
5V with a selectable ±5%, ±10%, or ±15% window voltage.
The MAX6763/MAX6764 allow for externally adjustable
thresholds. The MAX6754–MAX6762 are available in two delay-timing options (20μs, typ or 100ms, min). The
MAX6760/MAX6761/MAX6762 also include a latched
overvoltage output function and the MAX6754–MAX6762
include a manual reset input.
This family of products is available in small SOT23 and
TDFN packages, and is specified over the extended
temperature range of -40°C to +125°C.
Applications
●Telecommunications●Networking●Computers/Servers●Data Storage●Power Metering●DC-DC Converter●Modules●Automotive
Beneits and Features
●Single/Dual-Supply Voltage Monitors●Factory-Trimmed Window Threshold Options for 5V,
3.3V, 3V, 2.5V, 1.8V, 1.5V, 1.2V, and 0.9V Supplies●Externally Adjustable Window Monitoring Options for
Supplies Down to 0.5V●Selectable Window Threshold Options (±5%, ±10%, ±15%)●Single (Combined UV/OV) or Dual (Separate UV and OV) Outputs●20μs (typ) or 100ms (min) Timeout Period Options (MAX6754–MAX6762)●Manual Reset Input (MAX6754–MAX6762)●Latched Overvoltage Output Function (MAX6760/MAX6761/MAX6762)●Immune to Short Voltage Transients●Low 10μA Supply Current●Low-Voltage Operation (Outputs Valid for VCC Down to 1V)●-40°C to +125°C Operating Temperature Range●Small SOT23 and TDFN Packages
Ordering Information continued at end of data sheet.
Pin Configurations appears at end of data sheet.

Insert the threshold level suffixes for VCC and VCC2 (Tables 1
and 2) after UK, UT, or TA. For the MAX6754–MAX6759,
insert only the VCC threshold suffix after the UK or UT. Insert
the reset timeout delay (Table 3) after D to complete the part
number. For example, the MAX6760TALTD3-T provides a
VCC threshold of 5V, a VCC2 threshold of 3.3V, and a 100ms
minimum reset timeout period. Sample stock is generally held
on standard versions only (see the Standard Versions table).
Standard versions have an order increment requirement of
2500 pieces. Nonstandard versions have an order increment
requirement of 10,000 pieces. Contact factory for availability.
Devices are available in both leaded and lead-free packaging.
Specify lead-free by replacing “-T” with “+T” when ordering.
PARTTEMP RANGEPIN-PACKAGE
MAX6754UK_D_-T
-40°C to +125°C5 SOT23-5
MAX6755UK_D_-T
-40°C to +125°C5 SOT23-5
MAX6756UK_D_-T
-40°C to +125°C5 SOT23-5
MAX6756UK_D_/V+T*
-40°C to +125°C5 SOT23-5
MAX6757UT_D_-T
-40°C to +125°C6 SOT23-6
MAX6758UT_D_-T
-40°C to +125°C6 SOT23-6Typical Application Circuit
Ordering Information
MAX6757

NMI
RESETMR
GND
VCC
SET
VCC
MAX6754–MAX6764Low-Power, Single/Dual-Voltage Window
Detectors
(Voltages with respect to GND.)
VCC, VCC2, ................................................................-0.3V to +6.5V
SET, OVLATCH, MR, UVIN, OVIN .................-0.3V to (VCC + 0.3V)
UV, RESET, OV (open drain) ....................................-0.3V to +6.5V
RESET, OV, UV, UV, RESET (push-pull) ......-0.3V to (VCC + 0.3V)Input/Output Current (all pins) ..................................................20mA
Continuous Power Dissipation (TA = +70°C)
5-Pin SOT23-5 (derate 7.1mW/°C above TA = +70°C) ...571mW
6-Pin SOT23-6 (derate 8.7mW/°C above TA = +70°C) ...696mW
8-Pin TDFN (derate 24.4mW/°C above TA = +70°C) ....1951mW
Operating Temperature Range ...............................-40°C to +125°C
Junction Temperature ............................................................+150°C
Storage Temperature Range ..................................-65°C to +150°CLead Temperature (soldering, 10s) .......................................+300°CSoldering Temperature (reflow) Lead(Pb)-Free Package ....................................................+260°C Containing Lead(Pb) ..........................................................+240°C
(VCC = 1.0V to 6.0V, VCC2 = 0 to 6.0V (MAX6760–MAX6762), TA = -40°C to +125°C, unless otherwise noted. Typical values are at
TA = +25°C.) (Note 1)
Absolute Maximum Ratings
Electrical Characteristics

Stresses beyond those listed under “Absolute Maximum Ratings” may cause permanent damage to the device. These are stress ratings only, and functional operation of the device at these
or any other conditions beyond those indicated in the operational sections of the specifications is not implied. Exposure to absolute maximum rating conditions for extended periods may affect
device reliability.
PARAMETERSYMBOLCONDITIONSMINTYPMAXUNITS
POWER REQUIREMENTS

Operating Voltage RangeVCC
(Note 2)1.06.0MAX6760TAAA/MAX6761TAAA/
MAX6762TAAA/MAX6763/MAX6764UT-T1.46.0
VCC Supply CurrentICC
VCC = 3.6V, MAX6754–MAX6759, no load1330VCC = 3.6V, MAX6763/MAX6764, no load 1023
VCC = 3.6V, VCC ≥ VCC2,
MAX6760/MAX6761/MAX6762, no load1330
VCC2 Supply Current
ICC2
VCC2 = 1.8V, VCC ≥ VCC2,
MAX6760/MAX6761/MAX676211.5µA
Adjustable Bias CurrentVCC2 (MAX6760–MAX6762TA_AD_)(Note 3)-20+20nA
VCC THRESHOLD

VCC Overvoltage ThresholdOVTH
TA = -40°C to
+125°C, rising
VCC
L, 5V
VSET = VSB5.7505.8756.000
SET = VCC5.5005.6255.750
SET = GND5.2505.3755.500
T, 3.3V
VSET = VSB3.7953.8783.960
SET = VCC3.6303.7133.795
SET = GND3.4653.5483.630
R, 3.0V
VSET = VSB3.4503.5253.600
SET = VCC3.3003.3753.450
SET = GND3.1503.2253.300
Z, 2.5V
VSET = VSB2.8752.9383.000
SET = VCC2.7502.8132.875
SET = GND2.6252.6882.750
W, 1.8V
VSET = VSB2.0702.1152.160
SET = VCC1.9802.0252.070
MAX6754–MAX6764Low-Power, Single/Dual-Voltage Window
Detectors
(VCC = 1.0V to 6.0V, VCC2 = 0 to 6.0V (MAX6760–MAX6762), TA = -40°C to +125°C, unless otherwise noted. Typical values are at
TA = +25°C.) (Note 1)
Electrical Characteristics (continued)
PARAMETERSYMBOLCONDITIONSMINTYPMAXUNITS

VCC Undervoltage ThresholdUVTH
TA = -40°C
to +125°C,
falling VCC
L, 5V
VSET = VSB4.0004.1254.250
SET = VCC4.2504.3754.500
SET = GND4.5004.6254.750
T, 3.3V
VSET = VSB2.6402.7232.805
SET = VCC2.8052.8882.970
SET = GND2.9703.0533.135
R, 3.0V
VSET = VSB2.4002.4752.550
SET = VCC2.5502.6252.700
SET = GND2.7002.7752.850
Z, 2.5V
VSET = VSB2.0002.0632.125
SET = VCC2.1252.1882.250
SET = GND2.2502.3132.375
W, 1.8V
VSET = VSB1.4401.4851.530
SET = VCC1.5301.5751.620
SET = GND1.6201.6651.710
VCC2 Overvoltage ThresholdOVTH2
TA = -40°C
to +125°C,
rising VCC2
T, 3.3V
VSET = VSB3.7953.8783.960
SET = VCC3.6303.7133.795
SET = GND3.4653.5483.630
R, 3.0V
VSET = VSB3.4503.5253.600
SET = VCC3.3003.3753.450
SET = GND3.1503.2253.300
Z, 2.5V
VSET = VSB2.8752.9383.000
SET = VCC2.7502.8132.875
SET = GND2.6252.6882.750
W, 1.8V
VSET = VSB2.0702.1152.160
SET = VCC1.9802.0252.070
SET = GND1.8901.9351.980
I, 1.5V
VSET = VSB (Note 2)1.7251.7631.800
SET = VCC (Note 2)1.6501.6881.725
SET = GND (Note 2)1.5751.6131.650
G, 1.2V
VSET = VSB (Note 2)1.3801.4101.440
SET = VCC (Note 2)1.3201.3501.380
SET = GND (Note 2)1.2601.2901.320
E, 0.9V
VSET = VSB (Note 2)1.0351.0581.080
SET = VCC (Note 2)0.9901.0131.035
SET = GND (Note 2)0.9450.9680.990
ADJ
VSET = VSB0.4890.5000.511
SET = VCC0.4680.4790.489
SET = GND0.4470.4570.468
MAX6754–MAX6764Low-Power, Single/Dual-Voltage Window
Detectors
(VCC = 1.0V to 6.0V, VCC2 = 0 to 6.0V (MAX6760–MAX6762), TA = -40°C to +125°C, unless otherwise noted. Typical values are at
TA = +25°C.) (Note 1)
Electrical Characteristics (continued)
PARAMETERSYMBOLCONDITIONSMINTYPMAXUNITS

VCC2 Undervoltage ThresholdUVTH2
TA = -40°C
to +125°C,
falling
VCC2
T, 3.3V
VSET = VSB2.6402.7232.805
SET = VCC2.8052.8882.970
SET = GND2.9703.0533.135
R, 3.0V
VSET = VSB2.4002.4752.550
SET = VCC2.5502.6252.700
SET = GND2.7002.7752.850
Z, 2.5V
VSET = VSB2.0002.0632.125
SET = VCC2.1252.1882.250
SET = GND2.2502.3132.375
W, 1.8V
VSET = VSB1.4401.4851.530
SET = VCC1.5301.5751.620
SET = GND1.6201.6651.710
I, 1.5V
VSET = VSB (Note 2)1.2001.2381.275
SET = VCC (Note 2)1.2751.3131.350
SET = GND (Note 2)1.3501.3881.425
G, 1.2V
VSET = VSB (Note 2)0.9600.9901.020
SET = VCC (Note 2)1.0201.0501.080
SET = GND (Note 2)1.0801.1101.140
E, 0.9V
VSET = VSB (Note 2)0.7200.7430.765
SET = VCC (Note 2)0.7650.7880.810
SET = GND (Note 2)0.8100.8330.855
ADJ
VSET = VSB0.3400.3510.362
SET = VCC0.3620.3720.383
SET = GND0.3830.3940.404
Threshold HysteresisVHYSTVCC, VCC20.7%
UNDERVOLTAGE/OVERVOLTAGE INPUTS (UVIN, OVIN) (MAX6763/MAX6764)

UVIN, OVIN Threshold VoltageVTH-IN0.4850.50.515V
UVIN, OVIN Input Bias CurrentIIN(Note 3)-20+20nA
UVIN, OVIN Threshold
HysteresisVHYST0.7%
MAX6754–MAX6764Low-Power, Single/Dual-Voltage Window
Detectors
(VCC = 1.0V to 6.0V, VCC2 = 0 to 6.0V (MAX6760–MAX6762), TA = -40°C to +125°C, unless otherwise noted. Typical values are at
TA = +25°C.) (Note 1)
Electrical Characteristics (continued)
PARAMETERSYMBOLCONDITIONSMINTYPMAXUNITS
TIMING CHARACTERISTICS

Reset and UV Timeout Period tRPFigure 7D020µs100185320ms
VCC to Reset DelaytD-RESETVCC/VCC2 falling at 10mV/µs from
UVTH + 100mV to UVTH - 100mV 20µs
VCC to UV DelaytD-UVVCC/VCC2 rising at 10mV/µs from
OVTH - 100mV to OVTH + 100mV20µs
VCC to OV DelaytD-OV
VCC/VCC2 rising at 10mV/µs from
OVTH - 100mV to OVTH + 100mV(MAX6757–MAX6762 only)µs
UVIN to UV Delay(MAX6763/MAX6764)20µs
OVIN to OV Delay(MAX6763/MAX6764)20µs
Startup Delay Time tSTARTD0 options only, OV output (Note 4)2ms
THRESHOLD WINDOW SELECT INPUT (SET)

Input-Voltage Low00.1V
Input Bias Voltage(Note 5)VSB
VCC = 1.4V0.650.75VCC = 3.0V0.812.19
VCC = 6.0V1.104.90
Input-Voltage HighVCC - 0.1VCCV
Input CurrentISET-1+1µA
MANUAL RESET (MR)

Input-Voltage Low0.23 x
VCCV
Input-Voltage High0.6 x
VCCV
Pullup Resistance to VCC 26kΩ
Minimum Pulse Width4µs
Transient Immunity300ns
Propagation Delay
tD-MRMR falling, Figure 7300ns
tMR_PMR rising, Figure 7D040100185320ms
OVERVOLTAGE OUTPUT LATCH CONTROL INPUT (OVLATCH)

Input-Voltage Low0.3 x
VCCV
Input-Voltage High0.7 x
VCCV
MAX6754–MAX6764Low-Power, Single/Dual-Voltage Window
Detectors
(VCC = 1.0V to 6.0V, VCC2 = 0 to 6.0V (MAX6760–MAX6762), TA = -40°C to +125°C, unless otherwise noted. Typical values are at
TA = +25°C.) (Note 1)
Electrical Characteristics (continued)
PARAMETERSYMBOLCONDITIONSMINTYPMAXUNITS

Input Bias CurrentIOVLATCH-1+1µA
RESET, RESET, UV, UV, OV

RESET, UV Output Low (Open Drain or Push-Pull) VOL
Any VCC ≥ 1.0V, ISINK = 100µA,
output asserted0.3
Any VCC ≥ 1.2V, ISINK = 200µA,
output asserted0.3
Any VCC ≥ 1.71V, ISINK = 1.0mA,
output asserted0.3
Any VCC ≥ 2.85V, ISINK = 2.0mA,
output asserted0.3
Any VCC ≥ 4.75V, ISINK = 4.0mA,
output asserted0.3
RESET, UV Output High(Push-Pull)VOH
Any VCC ≥ 1.71V, ISOURCE = 0.8mA,
output deasserted
0.8 x
VCCAny VCC ≥ 2.85V, ISOURCE = 2.0mA,
output deasserted
0.8 x
VCC
Any VCC ≥ 4.75V, ISOURCE = 4.0mA,
output deasserted
0.8 x
VCC
RESET, UV Output Low(Push-Pull)VOL
Any VCC ≥ 1.71V, ISINK = 1.0mA,
output deasserted0.3Any VCC ≥ 2.85V, ISINK = 2.0mA,
output deasserted0.3
Any VCC ≥ 4.75V, ISINK = 4.0mA,
output deasserted0.3
RESET, UV Output High(Push-Pull)VOH
Any VCC ≥ 1.0V, ISOURCE = 50µA,
output asserted
0.8 x
VCC
Any VCC ≥1.2V, ISOURCE = 100µA,
output asserted
0.8 x
VCC
Any VCC ≥ 1.71V, ISOURCE = 0.8mA,
output asserted
0.8 x
VCC
Any VCC ≥ 2.85V, ISOURCE = 2.0mA,
output asserted
0.8 x
VCC
Any VCC ≥ 4.75V, ISOURCE = 4.0mA,
output asserted
0.8 x
VCC
MAX6754–MAX6764Low-Power, Single/Dual-Voltage Window
Detectors
(VCC = 1.0V to 6.0V, VCC2 = 0 to 6.0V (MAX6760–MAX6762), TA = -40°C to +125°C, unless otherwise noted. Typical values are at
TA = +25°C.) (Note 1)
Note 1:
Devices are production tested at +25°C. Overtemperature limits are guaranteed by design.
Note 2:
Voltage monitoring requires that VCC must be greater than or equal to 1.4V, but outputs remain asserted in the correct state
for VCC down to 1.0V.Note 3: Guaranteed by design.
Note 4:
For D0 window detector options and OV outputs, startup delay time is the time required for the internal reference/circuitry to
reach specified accuracy after the monitor is powered up from GND.
Note 5:
The input bias voltage is based off of VCC. The minimum value is given by the equation (0.1 x VCC + 0.51)V and the maxi-
mum value is given by (0.9 x VCC - 0.51)V.
Electrical Characteristics (continued)
PARAMETERSYMBOLCONDITIONSMINTYPMAXUNITS

OV Output Low
(Open-Drain orPush-Pull)
VOL
Any VCC ≥ 1.98V, ISINK = 1.4mA,
output asserted0.3
Any VCC ≥ 2.75V, ISINK = 2.0mA,
output asserted0.3
Any VCC ≥ 3.63V, ISINK = 3.0mA,
output asserted0.3
Any VCC ≥ 5.5V, ISINK = 4.0mA,
output asserted0.3
OV Output High(Push-Pull)VOH
Any VCC ≥ 1.0V, ISOURCE = 50µA,
output deasserted
0.8 x
VCC
Any VCC ≥ 1.2V, ISOURCE = 100µA,
output deasserted
0.8 x
VCC
Any VCC ≥ 1.98V, ISOURCE = 1.4mA,
output deasserted
0.8 x
VCC
Any VCC ≥ 2.75V, ISOURCE = 2.0mA,
output deasserted
0.8 x
VCC
Any VCC ≥ 3.63V, ISOURCE = 3.0mA,
output deasserted
0.8 x
VCC
Any VCC ≥ 5.5V, ISOURCE = 4.5mA,
output deasserted
0.8 x
VCC
RESET, UV, OV Output Open-
Drain Leakage CurrentILKGOutput not asserted1µA
MAX6754–MAX6764Low-Power, Single/Dual-Voltage Window
Detectors
(VCC = 5V, VCC2 = 3.3V, TA = +25°C, unless otherwise noted.)Typical Operating Characteristics
UNDERVOLTAGE THRESHOLD
vs. TEMPERATURE

MAX6754 toc02
TEMPERATURE (°C)
NORMALIZED UNDERVOLTAGE THRESHOLD (V)
UNDERVOLTAGE THRESHOLD RISING
UNDERVOLTAGE THRESHOLD FALLING
NORMALIZED TO FALLING
THRESHOLD AT TA = +25°C
TRANSIENT IMMUNITY
vs. THRESHOLD OVERDRIVE

MAX6754 toc03
OVERDRIVE (mV)
TRANSIENT IMMUNITY (µs)
OUTPUT ASSERTS
ABOVE THIS LINE
D3 TIMEOUT PERIOD
vs. TEMPERATURE

MAX6754 toc04
TIMEOUT PERIOD (ms)
TEMPERATURE (°C)
SUPPLY CURRENT vs. SUPPLY VOLTAGE
MAX6754 toc05
VCC (V)
ICC
(µA)4326
TA = +125°C
TA = +85°C
TA = +25°C
TA = -40°C
OUTPUT-VOLTAGE LOW
vs. SINK CURRENT

MAX6754 toc06
(V)105
VCC = 5.0V
VCC = 3.3V
VCC = 2.5V
VCC = 1.8V
OVERVOLTAGE THRESHOLD
vs. TEMPERATURE

MAX6754 toc01
TEMPERATURE (°C)
NORMALIZED OVERVOLTAGE THRESHOLD (V)
OVERVOLTAGE THRESHOLD RISING
OVERVOLTAGE THRESHOLD FALLING
NORMALIZED TO RISING
THRESHOLD AT TA = +25°C
OUTPUT-VOLTAGE HIGH
vs. SOURCE CURRENT

MAX6754 toc07
- V
(V)105
VCC = 5.0V
VCC = 3.3V
VCC = 2.5V
VCC = 1.8V
MAX6754–MAX6764Low-Power, Single/Dual-Voltage Window
Detectors
Pin Description
PIN
NAMEFUNCTIONMAX6754/
MAX6755/
MAX6756
MAX6757/
MAX6758/
MAX6759
MAX6760/
MAX6761/
MAX6762
MAX6763/
MAX6764
11–VCC
Power Voltage Input. VCC powers the device. VCC is the monitored
voltage.——1Power Input. VCC powers the device.222GNDGround38—MR
Active-Low Manual Reset Input. Drive MR low to assert undervoltage
and reset outputs. The asserted output remains asserted for the speciied propagation delay period after MR goes high. MR is
internally pulled up to VCC through a 26kΩ resistor. ———RESET/
RESET
Reset Output. The Reset Output asserts when VCC is below the
selected UVTH threshold or above the selected OVTH threshold. Reset output deasserts after the speciied timeout period after VCC
rises above the UVTH threshold or drops below the OVTH threshold.
MAX6754: Active-low push-pull output (RESET).
MAX6755: Active-high push-pull output (RESET).
MAX6756: Active-low open-drain output (RESET).64—SET
Threshold Window Select Input. SET conigures the undervoltage
and overvoltage window range for the internal detectors. Connect
SET to GND for ±5% window, or to VCC for ±10% window. Bias SET
to VCC/2 for a ±15% window. 46—UV/
Undervoltage Output. UV/UV asserts when the monitored supply/
supplies are below the UVTH thresholds or MR is low. UV/UV deasserts after the speciied timeout period when the monitored
supply/supplies rise above the UVTH thresholds or for the speciied
propagation delay after MR goes high.
MAX6757/MAX6760: Active-low push-pull output (UV).
MAX6758/MAX6761: Active-high push-pull output (UV).
MAX6759/MAX6762: Active-low open-drain output (UV).—3—VCC2VCC2 Voltage Input. Input for the second window voltage monitor,
and device output power supply when VCC2 > VCC.55OV
Active-Low Overvoltage Output. OV asserts low when the monitored
supply/supplies are above their overvoltage threshold (OVTH). OV
goes high impedance immediately when the monitored supply/
supplies drop below OVTH.
There is no timeout delay period for the OV output.
For MAX6763/MAX6764, OV is low when OVIN is above the internal
0.5V threshold. OV is high when OVIN is below the internal 0.5V
threshold.
MAX6757–MAX6762: Active-low open-drain output.
MAX6763: Active-low push-pull output.
MAX6764: Active-low open-drain output.
MAX6754–MAX6764Low-Power, Single/Dual-Voltage Window
Detectors
PIN
NAMEFUNCTIONMAX6754/
MAX6755/
MAX6756
MAX6757/
MAX6758/
MAX6759
MAX6760/
MAX6761/
MAX6762
MAX6763/
MAX6764
—OVLATCH
Overvoltage Output Latch Control Input. Drive OVLATCH high
to latch the overvoltage output for any VCC or VCC2 overvoltage
condition. Drive OVLATCH low to clear the latch after overvoltage
conditions have been removed. The latch is transparent when
OVLATCH is connected to GND. OVLATCH is a high-impedance
input. Use external pullup or pulldown.——3UVINUndervoltage Input. UV is low when UVIN is below the internal 0.5V
threshold. UV is high when UVIN is above the internal 0.5V threshold.——4UV
Undervoltage Output. UV is low when UVIN is below the internal
0.5V threshold. UV is high when UVIN is above the internal 0.5V
threshold. There is no timeout delay period for the UV output. ——6OVINOvervoltage Input. OV is low when OVIN is above the internal 0.5V
threshold. OV is high when OVIN is below the internal 0.5V threshold.———EPExposed Pad (TDFN Only). EP is internally connected to GND.
Leave EP unconnected or connect to GND.
Pin Description (continued)
Functional Diagrams

TIMEOUT
PERIOD
OPTION
ADJUST
MONITOR
VOLTAGE
UV THRESHOLD
-5%, -10%, -15%
OV THRESHOLD
+5%, +10%, +15%
INTERNAL
REFERENCE
GND
(RESET)/
RESET
VCC
OV MONITOR
UV MONITOR
MAX6754/MAX6755/MAX6756

OVTH
UVTH
SET
MAX6754–MAX6764Low-Power, Single/Dual-Voltage Window
Detectors
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