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MAX6375UR26+ |MAX6375UR26MAXIMN/a20avai3-Pin, Ultra-Low-Power SC70/SOT23 Voltage Detectors
MAX6375UR29+T |MAX6375UR29TMAXIMN/a2553avai3-Pin, Ultra-Low-Power SC70/SOT23 Voltage Detectors
MAX6377UR29+TMAXIMN/a588avai3-Pin, Ultra-Low-Power SC70/SOT23 Voltage Detectors
MAX6377XR28+T |MAX6377XR28TMAXIN/a2500avai3-Pin, Ultra-Low-Power SC70/SOT23 Voltage Detectors
MAX6378XR44+T |MAX6378XR44TMAXIMN/a5000avai3-Pin, Ultra-Low-Power SC70/SOT23 Voltage Detectors
MAX6380UR42MAXIMN/a300avai3-Pin, Ultra-Low-Power SC70/SOT23 Voltage Detectors


MAX6378XR44+T ,3-Pin, Ultra-Low-Power SC70/SOT23 Voltage DetectorsApplicationsdevices available in tape-and-reel only.Devices are available in both leaded and lead-f ..
MAX6379XR44-T ,Ultra-low-power voltage detector, 4.4VELECTRICAL CHARACTERISTICS(V = full range, T = -40°C to +85°C, unless otherwise noted. Typical valu ..
MAX637ACPA ,Preset -15V output or adjuistable output with 2 resistors, CMOS switching regulator. Output accuracy 5%.Applications MAX635XMJA -55°C to +125°C 8 CERDIP . . . . . MAX636XCPA 0°C to +70°C 8 Plastic DIP ..
MAX637ACPA ,Preset -15V output or adjuistable output with 2 resistors, CMOS switching regulator. Output accuracy 5%.Applications MAX635XMJA -55°C to +125°C 8 CERDIP . . . . . MAX636XCPA 0°C to +70°C 8 Plastic DIP ..
MAX637ACPA+ ,Preset/Adjustable Output CMOS Inverting Switching RegulatorsApplications MAX635XMJA -55°C to +125°C 8 CERDIP . . . . . MAX636XCPA 0°C to +70°C 8 Plastic DIP ..
MAX637ACSA ,Preset -15V output or adjuistable output with 2 resistors, CMOS switching regulator. Output accuracy 5%.features such as MAX635XCSA 0 C to +70 C 8 Narrow SO Itogic-level shutdown, adjustable oscillator ..
MB2245BB ,16-bit transceivers with direction pins 3-State
MB2245BB ,16-bit transceivers with direction pins 3-State
MB2374BB ,Dual octal D-type flip-flop; positive-edge trigger (3-State)
MB2374BB ,Dual octal D-type flip-flop; positive-edge trigger (3-State)
MB2374BB ,Dual octal D-type flip-flop; positive-edge trigger (3-State)
MB2543BB ,Dual octal latched transceivers with dual enable 3-State


MAX6375UR26+-MAX6375UR29+T-MAX6377UR29+T-MAX6377XR28+T-MAX6378XR44+T-MAX6380UR42
3-Pin, Ultra-Low-Power SC70/SOT23 Voltage Detectors
General Description
The MAX6375–MAX6380 are ultra-low-power circuits
used for monitoring battery, power-supply, and regulat-
ed system voltages. Each detector contains a precision
bandgap reference, comparator, and internally trimmed
resistors that set specified trip threshold voltages.
These devices provide excellent circuit reliability and
low cost by eliminating external components and
adjustments when monitoring nominal system voltages
from 2.5V to 5V.
These circuits perform a single function: they assert an
output signal whenever the VCCsupply voltage falls
below a preset threshold. The devices are differentiated
by their output logic configurations and preset thresh-
old voltages. The MAX6375/MAX6378 (push-pull) and
MAX6377/MAX6380 (open-drain) have an active-low
output (OUTis logic low when VCCis below VTH). The
MAX6376/MAX6379 have an active-high push-pull out-
put (OUT is logic high when VCCis below VTH). All
parts are guaranteed to be in the correct output logic
state for VCCdown to 1V. The detector is designed to
ignore fast transients on VCC. The MAX6375/MAX6376/
MAX6377 have voltage thresholds between 2.20V and
3.08V in approximately 100mV increments. The
MAX6378/MAX6379/MAX6380 have voltage thresholds
between 3.30V and 4.63V in approximately 100mV
increments.
Ultra-low supply current of 500nA (MAX6375/MAX6376/
MAX6377) makes these parts ideal for use in portable
equipment. All six devices are available in a space-sav-
ing SC70 package or in a tiny SOT23 package.
Applications

Precision Battery Monitoring
Load Switching/Power Sequencing
Power-Supply Monitoring in Digital/Analog Systems
Portable/Battery-Powered Equipment
Features
Ultra-Low 500nA Supply Current
(MAX6375/MAX6376/MAX6377)
Thresholds Available from 2.20V to 4.63V in
Approximately 100mV Increments
±2.5% Threshold Accuracy Over TemperatureLow CostAvailable in Three Versions: Push-Pull OUT,
Push-Pull OUT, and Open-Drain OUT
Power-Supply Transient ImmunityNo External ComponentsAvailable in Either a 3-Pin SC70
or 3-Pin SOT23 Package
MAX6375–MAX6380
3-Pin, Ultra-Low-Power SC70/SOT23
Voltage Detectors

( ) ARE FOR MAX6376/MAX6379 ONLY.
TOP VIEW
OUT(OUT)
GND
SC70-3
GND
SOT23-3

VCCMAX6375XR–
MAX6380XR
MAX6375UR–
MAX6380URVCC
OUT(OUT)
Pin Configuration

19-1721; Rev 3; 12/05
*The MAX6375/MAX6376/MAX6377 are available in factory-preset
thresholds from 2.20V to 3.08V, in approximately 0.1V increments.
The MAX6378/MAX6379/MAX6380 are available in factory-preset
thresholds from 3.30V to 4.63V, in approximately 0.1V increments.
Choose the desired threshold suffix from Table 1 and insert it in
the blank spaces following R. There are 21 standard versions,
with a required order increment of 2500 pieces. Sample stock is
generally held on the standard versions only (see the Selector
Guide). The required order increment is 10,000 pieces for non-
standard versions (Table 2). Contact factory for availability. All
devices available in tape-and-reel only.
Devices are available in both leaded and lead-free packaging.
Specify lead-free by replacing “-T” with “+T” when ordering.
Ordering Information
Selector Guide appears at end of data sheet.
PART*TEMP RANGEPIN-PACKAGE
MAX6375UR _ _ -T
-40°C to +85°C3 SOT23-3
MAX6375XR _ _ -T-40°C to +85°C3 SC70-3
MAX6376UR _ _ -T
-40°C to +85°C3 SOT23-3
MAX6376XR _ _ -T-40°C to +85°C3 SC70-3
Ordering information continued at end of data sheet
MAX6375–MAX6380
3-Pin, Ultra-Low-Power SC70/SOT23
Voltage Detectors
ABSOLUTE MAXIMUM RATINGS
ELECTRICAL CHARACTERISTICS

(VCC= full range, TA= -40°C to +85°C, unless otherwise noted. Typical values are at TA= +25°C and VCC= 3V.) (Note 1)
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.
Terminal Voltage (with respect to GND)
VCC...........................................................................-0.3V to +6V
OUT, OUT(push-pull)................................-0.3V to (VCC+ 0.3V)
OUT(open-drain).....................................................-0.3V to +6V
Input Current (VCC).............................................................20mA
Output Current (OUT, OUT)................................................20mA
Continuous Power Dissipation (TA= +70°C)
3-Pin SC70 (derate 2.17mW/°C above +70°C)...........174mW
3-Pin SOT23 (derate 4mW/°C above +70°C)..............320mW
Operating Temperature Range...........................-40°C to +85°C
Storage Temperature Range.............................-65°C to +150°C
Junction Temperature......................................................+150°C
Lead Temperature (soldering, 10s).................................+300°C
Note 1:
Production tested at +25°C only. Overtemperature limits are guaranteed by design, not production tested.VCC= (VTH- 100mV) to (VTH+ 100mV)
ISINK= 100µA, VCC≥1.2V, OUTasserted0.4
VOL
OUTOutput Voltage
(MAX6375/MAX6377/
MAX6378/MAX6380)
ISINK= 1.6mA, VCC> 2.1V, OUTasserted0.3
MAX6375/76/77 only, VCC= 3.0V for VTH≤2.93V,
VCC= 3.2V for VTH> 2.93V, no load
ISOURCE= 500µA, VCC= 3.2V, MAX6375 only
VOHISOURCE= 800µA, VCC= 4.5V, VTH≤4.38VOUTOutput Voltage
(MAX6375/MAX6377)
ISOURCE= 800µA, VCC= VTH(MAX), VTH≥4.5V= -40°C to +85°C= 0°C to +70°C
CONDITIONS

ppm/°C40∆VTH/°CVoltage Threshold TempcoVCCOperating Range
UNITSMINTYPMAXSYMBOLPARAMETER

VCC= (VTH+ 100mV) to (VTH- 100mV)µs20Propagation Delay
MAX6375/MAX6376/MAX63776.3
MAX6378/MAX6379/MAX63809.5mVVoltage Threshold
Hysteresis
0.1µAOpen-Drain OUTOutput
Leakage Current
0.8 ✕VCC
0.8 ✕VCC
0.8 ✕VCC
1.25.5= -40°C to +85°C= +25°C
Table 1
VTH-2.5%VTHVTH+2.5%
VTHV
VTH-1.5%VTHVTH+1.5%
Voltage Threshold
VCC= 5.5V, no load
ICCSupply Current0.51.0µA
ISOURCE= 500µA, VCC≥2.1V, OUT asserted0.8 ✕VCC
0.8 ✕VCC
ISINK= 1.2mA, VCC≥3.2V, OUT not asserted,
MAX6376 only0.3
ISOURCE= 50µA, VCC≥1.2V, OUT assertedVOH
ISINK= 3.2mA, VCC≥4.5V, OUT not asserted,
VTH≤4.38V0.4
ISINK= 3.2mA, VCC= VTH(MAX), VTH≥4.5V0.4
VOL
OUT Output Voltage
(MAX6376/MAX6379)
MAX6375–MAX6380
3-Pin, Ultra-Low-Power SC70/SOT23
Voltage Detectors
__________________________________________Typical Operating Characteristics

(VCC = 5V, TA = +25°C, unless otherwise noted.)
SUPPLY CURRENT vs. TEMPERATURE
MAX6375-01
TEMPERATURE (°C)
SUPPLY CURRENT (
VCC = 3.3V
VCC = 5V
VCC = 1.2V
PROPAGATION DELAY (FALLING)
vs. TEMPERATURE
MAX6375-02
TEMPERATURE (°C)
PROPAGATION DELAY (
VOD = 200mV
VOD = 10mV
VOD = 100mV
VOD = 20mV
PROPAGATION DELAY (RISING)
vs. TEMPERATURE
MAX6375-03
TEMPERATURE (°C)
PROPAGATION DELAY (
VOD = 10mV
VOD = 20mV
VOD = 100mV
VOD = 200mV
MAXIMUM TRANSIENT DURATION
vs. THRESHOLD OVERDRIVE
MAX6375-04
THRESHOLD OVERDRIVE
VTH - VCC (mV)
MAXIMUM TRANSIENT DURATION (
OUT/OUT IS ASSERTED
ABOVE LINE
Pin Description
PIN
MAX6375/MAX6377/
MAX6378/MAX6380MAX6376/MAX6379

SC70-3SOT23-3SC70-3SOT23-3
NAMEFUNCTION
212GNDGround——OUT
Active-Low Output. OUT remains low while VCC is below the threshold.
OUT is open-drain on the MAX6377/MAX6380 and push-pull on the
MAX6375/MAX6378.—21OUTActive-High Output. OUT remains high while VCC is below the
threshold.33VCCSupply Voltage
MAX6375–MAX6380
3-Pin, Ultra-Low-Power SC70/SOT23
Voltage Detectors
____________Applications Information
Interfacing to Different
Logic Voltage Components

The MAX6377/MAX6380 have an active-low, open-
drain output. This output structure sinks current when
OUTis asserted. Connect a pullup resistor from OUTto
any supply voltage up to 5.50V (Figure 1). Select a
resistor value large enough to allow a valid logic low
(see Electrical Characteristics), and small enough to
register a logic high while supplying all input current
and leakage paths connected to the OUTline.
Negative-Going VCCTransients

These devices are relatively immune to short-duration,
negative-going VCCtransients (glitches). The Typical
Operating Characteristicsshow the Maximum Transient
Duration vs. Threshold Overdrive graph, for which out-
put pulses are not generated. The graph shows the
maximum pulse width that a negative-going VCCtran-
sient may typically have before the devices issue out-
put signals. As the amplitude of the transient increases,
the maximum-allowable pulse width decreases.
Figure 1. Interfacing to Different Logic Voltage Components
Table 1. Factory-Trimmed Reset Thresholds‡

OUTSUSPEND
VIN
VCC
VOUT
3.6V
Li+
REGULATED
3.0V
VCC
DC/DC
CONVERTER
(OPEN-DRAIN)
MAX6377
RESET THRESHOLD VOLTAGE, VTH (V)
TA = +25°CTA = -40°C TO +85°CPARTSUFFIX
MINTYPMAXMINMAX
2.1672.2002.2332.1452.2502.2852.3202.3552.2622.3752.3642.4002.4362.3402.4602.4622.5002.5372.4372.5622.5912.6302.6692.5642.6962.6602.7002.7412.6332.7682.7582.8002.8422.7302.8702.8862.9302.9742.8573.0002.9553.0003.0452.9253.075
MAX6375_R
MAX6376_R
MAX6377_R3.0343.0803.1263.0033.150
3-Pin, Ultra-Low-Power SC70/SOT23
Voltage Detectors
Table 1. Factory-Trimmed Reset Thresholds‡(continued)

‡Factory-trimmed reset thresholds are available in approximately 100mV increments with a 1.5% room-temperature variance.
Table 2. Device Marking Codes and Minimum Order Increments
RESET THRESHOLD VOLTAGE, VTH (V)
TA = +25°CTA = -40°C TO +85°CPARTSUFFIX
MINTYPMAXMINMAX
3.2503.3003.3503.2173.3833.3493.4003.4513.3153.4853.4473.5003.5523.4123.5873.5463.6003.6543.5103.6903.6443.7003.7553.6073.7923.7433.8003.8573.7053.8953.8413.9003.9583.8023.9973.9404.0004.0603.9004.1004.0384.1004.1613.9974.2024.1374.2004.2634.0954.3054.2354.3004.3644.1924.4074.3144.3804.4464.2704.4894.4324.5004.5674.3874.612
MAX6378_R
MAX6379_R
MAX6380_R4.5604.6304.6994.5144.746
PARTTOP MARK
(SC70)
TOP MARK
(SOT23)
ORDER
INCREMENT (k)
MAX6375_R22-T
ADHFZHD2.5
MAX6375_R23-TADIFZHE2.5
MAX6375_R24-T——10
MAX6375_R25-T——10
MAX6375_R26-TACZFZHC2.5
MAX6375_R27-T——10
MAX6375_R28-T——10
MAX6375_R29-TADJFZHF2.5
MAX6375_R30-T——10
MAX6375_R31-TADKFZHG2.5
MAX6376_R22-T
ADLFZHH2.5
MAX6376_R23-TADMFZHI2.5
MAX6376_R24-T——10
MAX6376_R25-T——10
MAX6376_R26-TADNFZHJ2.5
MAX6376_R27-T——10
MAX6376_R28-T——10
MAX6376_R29-TADAFZHK2.5
PARTTOP MARK
(SC70)
TOP MARK
(SOT23)
ORDER
INCREMENT (k)

MAX6376_R30-T——10
MAX6376_R31-TADOFZHL2.5
MAX6377_R22-T
ADPFZHM2.5
MAX6377_R23-TADBFZHN2.5
MAX6377_R24-T——10
MAX6377_R25-T——10
MAX6377_R26-TACQFZHO2.5
MAX6377_R27-T——10
MAX6377_R28-T——10
MAX6377_R29-TADCFZHP2.5
MAX6377_R30-T——10
MAX6377_R31-TADRFZHQ2.5
MAX6378_R33-T
——10
MAX6378_R34-T——10
MAX6378_R35-T——10
MAX6378_R36-T——10
MAX6378_R37-T——10
MAX6378_R38-T——10
MAX6375–MAX6380
MAX6375–MAX6380
3-Pin, Ultra-Low-Power SC70/SOT23
Voltage Detectors
___________________Chip Information

TRANSISTOR COUNT: 419
Table 2. Device Marking Codes and Minimum Order Increments (continued)
Selector Guide
(Standard Versions**)

**Sample stock is generally held on all standard versions.
Contact factory for availability of nonstandard versions.
PARTTOP MARK
(SC70)
TOP MARK
(SOT23)
ORDER
INCREMENT (k)

MAX6378_R39-T——10
MAX6378_R40-T——10
MAX6378_R41-T——10
MAX6378_R42-T——10
MAX6378_R43-T——10
MAX6378_R44-TADSFZHU2.5
MAX6378_R45-T——10
MAX6378_R46-TADDFZHV2.5
MAX6379_R33-T
——10
MAX6379_R34-T——10
MAX6379_R35-T——10
MAX6379_R36-T——10
MAX6379_R37-T——10
MAX6379_R38-T——10
MAX6379_R39-T——10
MAX6379_R40-T——10
MAX6379_R41-T——10
MAX6379_R42-T——10
PARTTOP MARK
(SC70)
TOP MARK
(SOT23)
ORDER
INCREMENT (k)

MAX6379_R43-T——10
MAX6379_R44-TADEFZHW2.5
MAX6379_R45-T——10
MAX6379_R46-TADTFZHX2.5
MAX6380_R33-T
——10
MAX6380_R34-T——10
MAX6380_R35-T——10
MAX6380_R36-T——10
MAX6380_R37-T——10
MAX6380_R38-T——10
MAX6380_R39-T——10
MAX6380_R40-T——10
MAX6380_R41-T——10
MAX6380_R42-T——10
MAX6380_R43-T——10
MAX6380_R44-TADUFZHY2.5
MAX6380_R45-T——10
MAX6380_R46-TADFFZHZ2.5
PARTNOMINAL VTH (V)

MAX63 _ _ _ R46-T4.63
MAX63 _ _ _ R44-T4.38
MAX63 _ _ _ R31-T3.08
MAX63 _ _ _ R29-T2.93
MAX63 _ _ _ R26-T2.63
MAX63 _ _ _ R23-T2.32
MAX63 _ _ _ R22-T2.20
Ordering Information (continued)
PART*TEMP RANGEPIN-PACKAGE
MAX6377UR _ _ -T
-40°C to +85°C3 SOT23-3
MAX6377XR _ _ -T-40°C to +85°C3 SC70-3
MAX6378UR _ _ -T
-40°C to +85°C3 SOT23-3
MAX6378XR _ _ -T-40°C to +85°C3 SC70-3
MAX6379UR _ _ -T
-40°C to +85°C3 SOT23-3
MAX6379XR _ _ -T-40°C to +85°C3 SC70-3
MAX6380UR _ _ -T
-40°C to +85°C3 SOT23-3
MAX6380XR _ _ -T-40°C to +85°C3 SC70-3
*The MAX6375/MAX6376/MAX6377 are available in factory-preset
thresholds from 2.20V to 3.08V, in approximately 0.1V increments.
The MAX6378/MAX6379/MAX6380 are available in factory-preset
thresholds from 3.30V to 4.63V, in approximately 0.1V increments.
Choose the desired threshold suffix from Table 1 and insert it in
the blank spaces following R. There are 21 standard versions,
with a required order increment of 2500 pieces. Sample stock is
generally held on the standard versions only (see the Selector
Guide). The required order increment is 10,000 pieces for non-
standard versions (Table 2). Contact factory for availability. All
devices available in tape-and-reel only.
Devices are available in both leaded and lead-free packaging.
ic,good price


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