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MAX6351LSUT-T |MAX6351LSUTTMAXIMN/a2020avaiDual/Triple-Voltage レP Supervisory Circuits
MAX6353SYUK-T |MAX6353SYUKTMAXIMN/a532avaiDual/Triple-Voltage レP Supervisory Circuits
MAX6354LSUK-T |MAX6354LSUKTMAXIMN/a784avaiDual/Triple-Voltage レP Supervisory Circuits
MAX6354SYUK-T |MAX6354SYUKTMAXIMN/a1858avaiDual/Triple-Voltage レP Supervisory Circuits
MAX6355MSUT-T |MAX6355MSUTTMAXN/a340avaiDual/Triple-Voltage レP Supervisory Circuits
MAX6355SYUT-T |MAX6355SYUTTMAXIMN/a2500avaiDual/Triple-Voltage レP Supervisory Circuits
MAX6357LSUT-T |MAX6357LSUTTMAXN/a3670avaiDual/Triple-Voltage レP Supervisory Circuits
MAX6359LSUT-T |MAX6359LSUTTMAXN/a4944avaiDual/Triple-Voltage レP Supervisory Circuits
MAX6360LSUT-T |MAX6360LSUTTMAXN/a896avaiDual/Triple-Voltage レP Supervisory Circuits
MAX6360LSUT-T |MAX6360LSUTTMAXIMN/a2500avaiDual/Triple-Voltage レP Supervisory Circuits
MAX6360SYUT-T |MAX6360SYUTTMAXIMN/a105avaiDual/Triple-Voltage レP Supervisory Circuits


MAX6359LSUT-T ,Dual/Triple-Voltage レP Supervisory CircuitsFeaturesThe MAX6351–MAX6360 microprocessor (μP) supervi-♦ Precision Monitoring of Multiple +2.5V, + ..
MAX635ACPA ,Preset -5V output or adjuistable output with 2 resistors, CMOS switching regulator. Output accuracy 5%.Features The MAX635/MAX636/MAX637 inverting switching regu- . Preset -5V, -12V, -15V Output Volt ..
MAX635ACPA ,Preset -5V 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 ..
MAX635ACPA ,Preset -5V 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 ..
MAX635ACSA ,Preset -5V output or adjuistable output with 2 resistors, CMOS switching regulator. Output accuracy 5%.applications require only a diode, output filter . Only 3 External Components capacitor, and a Iow ..
MAX635ACSA ,Preset -5V output or adjuistable output with 2 resistors, CMOS switching regulator. Output accuracy 5%.19-0918; Re v tk 5/91 [VI llXI/VI Preset/Adiustable Output CMOS Inverting Switching Regulato ..
MB15F05LPV , Dual Serial Input PLL Frequency Synthesizer
MB15F07SLPV1 ,Dual Serial Input PLL Frequency SynthesizerFUJITSU SEMICONDUCTORDS04-21361-3EDATA SHEETASSPDual Serial InputPLL Frequency SynthesizerMB15F07SL ..
MB15F08SLPFV1 ,Dual Serial Input PLL Frequency SynthesizerFUJITSU SEMICONDUCTORDS04-21362-2EDATA SHEETASSPDual Serial InputPLL Frequency SynthesizerMB15F08SL ..
MB15F72SP ,Dual Serial Input PLL Frequency SynthesizerFUJITSU SEMICONDUCTORDS04-21363-2EDATA SHEETASSPDual Serial InputPLL Frequency SynthesizerMB15F72SP ..
MB15F73SP ,Dual Serial Input PLL Frequency SynthesizerFUJITSU SEMICONDUCTORDS04-21365-1EDATA SHEETASSPDual Serial InputPLL Frequency SynthesizerMB15F73SP ..
MB15F73SP ,Dual Serial Input PLL Frequency SynthesizerFUJITSU SEMICONDUCTORDS04-21365-1EDATA SHEETASSPDual Serial InputPLL Frequency SynthesizerMB15F73SP ..


MAX6351LSUT-T-MAX6353SYUK-T-MAX6354LSUK-T-MAX6354SYUK-T-MAX6355MSUT-T-MAX6355SYUT-T-MAX6357LSUT-T-MAX6359LSUT-T-MAX6360LSUT-T-MAX6360SYUT-T
Dual/Triple-Voltage レP Supervisory Circuits
General Description
The MAX6351–MAX6360 microprocessor (μP) supervi-
sors with multiple reset voltages significantly improve
system reliability and accuracy compared to separate
ICs or discrete components. If any input supply voltage
drops below its associated preset threshold, all reset
outputs are asserted. In addition, the output(s) is valid
as long as either input supply voltage remains greater
than +1.0V.
All devices in this series have an active-low debounced
manual reset input. In addition, the MAX6358/MAX6359/
MAX6360 offer a watchdog timer input with a 46.4sec
start-up timeout period and a 2.9sec timeout period.
The MAX6355/MAX6356/MAX6357 offer an additional
voltage monitor input to monitor a third voltage.
The MAX6351 features both 3V and 5V active-low push-
pull reset outputs. The MAX6353/MAX6356/MAX6359
offer a 5V active-low push-pull reset. The MAX6354/
MAX6357/MAX6360 offer a 3V active-low push-pull
reset. The MAX6352/MAX6355/MAX6358’s reset is
active-low open-drain.
All of these devices are offered with a wide variety of
voltage threshold levels, as shown in the Voltage
Threshold Levels table below. They are available in 5-
and 6-pin SOT23 packages and operate over the
extended (-40°C to +85°C) temperature range.
Applications

ComputersIntelligent Instruments
ControllersMultivoltage Systems
Portable/Battery-Powered
Equipment
Features
Precision Monitoring of Multiple +2.5V, +3.0V,
+3.3V, and +5V Power-Supply Voltages
Precision Factory-Set Power-Supply
Reset Thresholds
20μA Supply Current100ms min Power-On Reset Pulse WidthFully Guaranteed Over TemperatureGuaranteed RESETValid to VCC5 = 1V or
VCC3 = 1V
Power-Supply Transient ImmunityNo External Components for Dual-Voltage
Systems
Small 5- and 6-Pin SOT23 PackagesDebounced TTL/CMOS-Compatible
Manual-Reset Input
Watchdog Timer
46.4sec Start-Up Timeout
2.9sec Normal Timeout
Low Cost
MAX6351–MAX6360
Dual/Triple-Voltage
μP Supervisory Circuits

19-1508; Rev 1; 10/99
Ordering Information
Note:
Standard versions are shown in bold and have a required
order increment of 2500 pieces. Sample stock is generally held on
the standard versions only. The required order increment for non-
standard versions is 10,000 pieces. Contact factory for availability.
__________Voltage Threshold Levels
Pin Configurations appear at end of data sheet.
Selector Guide appears at end of data sheet.
MAX6351–MAX6360
Dual/Triple-Voltage
μP Supervisory Circuits
ABSOLUTE MAXIMUM RATINGS

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.
VCC5, VCC3 to GND.................................................-0.3V to +6V
RST(MAX6352/55/58).............................................-0.3V to +6V
RST, MR, WDI, RST5, RSTIN
(MAX6351/53/56/59).............................-0.3V to (VCC5 + 0.3V)
RST, RST3(MAX6351/54/57/60).................-3V to (VCC3 + 0.3V)
Input/Output Current, All Pins.............................................20mA
Continuous Power Dissipation (TA= +70°C)
5-Pin SOT23-5 (derate 7.1mW/°C above +70°C)........571mW
6-Pin SOT23-6 (derate 7.1mW/°C above +70°C)........571mW
Operating Temperature Range...........................-40°C to +85°C
Storage Temperature Range.............................-65°C to +150°C
Lead Temperature (soldering, 10sec).............................+300°C
ELECTRICAL CHARACTERISTICS

(VCC3 = VCC5 = +1.2V to +5.5V, TA= -40°C to +85°C, unless otherwise noted. Typical values are at TA = +25°C.) (Note 1)
MAX6351–MAX6360
Dual/Triple-Voltage
μP Supervisory Circuits
Note 1:
Overtemperature limits are guaranteed by design and not production tested.
Note 2:
The reset output is guaranteed to be in the correct state if either VCC3 or VCC5 is within its specified region of operation.
Note 3:
The reset output(s) is asserted if either VCC5 or VCC3 drops below its associated trip point.
Note 4:
Guaranteed by design. Not production tested.
Note 5:
WDI is internally serviced within the watchdog timeout period if WDI is left unconnected.
Note 6:
The WDI input current is specified as the average input current when the WDI input is driven high or low.
ELECTRICAL CHARACTERISTICS (continued)

(VCC3 = VCC5 = +1.2V to +5.5V, TA= -40°C to +85°C, unless otherwise noted. Typical values are at TA= +25°C.) (Note 1)
MAX6351–MAX6360
Dual/Triple-Voltage
μP Supervisory Circuits
Typical Operating Characteristics

(VCC = +5V, TA= +25°C, unless otherwise noted.)
MAX6351–MAX6360
Dual/Triple-Voltage
μP Supervisory Circuits
Pin Description
MAX6351–MAX6360
Detailed Description
Supply Voltages

The MAX6351–MAX6360 microprocessor (μP) superviso-circuits maintain system integrity by alerting the μP to
fault conditions. These ICs monitor multiple-supply sys-
tems and derive their internal power from the highest volt-
age source present at VCC5 and VCC3. In addition, the
output reset state is guaranteed to remain viable while
either VCC5 or VCC3 is above +1V.
Threshold Levels

All the possible input voltage threshold level combina-
tions are indicated by a two-letter code in Voltage
Threshold Levels. The two standard combinations are
LS and SY. LS parts monitor one +5V ±5% supply and
one +3.3V ±10% supply. SY parts monitor one +3.3V
±10% supply and one +2.5V ±10% supply. The other
combinations also monitor +5V ±10% supplies, +3.3V
±5% supplies, and +3V ±5% supplies.
Reset Outputs

The MAX6351 provides a 5V active-low reset and a 3V
active-low reset. The MAX6353/MAX6356/MAX6359 pro-
vide a 5V active-low push-pull reset and the MAX6354/
MAX6357/MAX6360 provide a 3V active-low push-pull
reset. The MAX6353/MAX6355/MAX6358 provide an
active-low open-drain reset. The higher input voltages of
VCC5 and VCC3 maintain the sinking capability of the
low reset-output state. The reset outputs are maintained
as long as either supply is above +1V.
Negative-Going VCCTransients

The MAX6351–MAX6360 are designed to ignore short
negative-going VCC5 and VCC3 transients. See Typical
Operating Characteristicsfor a glitch immunity graph.
Third Input Voltage
(MAX6355/MAX6356/MAX6357)

The MAX6355/MAX6356/MAX6357 provide an addition-
al input to monitor a third voltage. The threshold voltage
at RSTIN is typically 1.22V. To monitor a voltage higher
than 1.22V, connect a resistor-divider to the circuit as
shown in Figure 2. The threshold at V3is:
Note that RSTIN is powered by VCC5, and its voltage
must therefore remain lower than VCC5.
Dual/Triple-Voltage
μP Supervisory Circuits
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