MAX700CSA+ ,Power-Supply Monitor with ResetElectrical Characteristics(V = +5V, CTL = GND on MAX700, T = +25°C, unless otherwise noted.)CC APAR ..
MAX700EPA ,Power-Supply Monitor with ResetGeneral Description
The MAX700/701/702 are supervisory circuits used to
monitor the power suppl ..
MAX700ESA ,Power-Supply Monitor with ResetApplications
Computers
Controllers
Intelligent Instruments
Automotive Systems
Critical ..
MAX700ESA ,Power-Supply Monitor with Resetll/l lle/VI
Power-Suppiy Monitor with Reset
MAX700ESA+ ,Power-Supply Monitor with ResetElectrical Characteristics(V = +5V, CTL = GND on MAX700, T = +25°C, unless otherwise noted.)CC APAR ..
MAX700ESA+ ,Power-Supply Monitor with ResetApplicationsMAX702C/D 0°C to +70°C Dice● ComputersMAX702CPA 0°C to +70°C 8 PDIP● ControllersMAX702C ..
MB40176 ,AD/DA CONVERTERFUJITSU SEMICONDUCTORDS04-28500-5EDATA SHEETASSPAD/DA CONVERTERMB40166/MB401761-CHANNEL 6-BIT AD/DA ..
MB40176 ,AD/DA CONVERTERFUJITSU SEMICONDUCTORDS04-28500-5EDATA SHEETASSPAD/DA CONVERTERMB40166/MB401761-CHANNEL 6-BIT AD/DA ..
MB40176PF ,AD/DA converterFUJITSU SEMICONDUCTORDS04-28500-5EDATA SHEETASSPAD/DA CONVERTERMB40166/MB401761-CHANNEL 6-BIT AD/DA ..
MB402 , 40 Amp Single Phase Bridge Rectifier 50 to 1000 Volts
MB402 , 40 Amp Single Phase Bridge Rectifier 50 to 1000 Volts
MB404 , 40 Amp Single Phase Bridge Rectifier 50 to 1000 Volts
MAX700CPA+-MAX700CSA+-MAX700ESA+-MAX700ESA+T-MAX701CPA+-MAX701CSA+-MAX701ESA+-MAX702CSA+-MAX702ESA+
Power-Supply Monitor with Reset
General DescriptionThe MAX700/MAX701/MAX702 are supervisory circuits
used to monitor the power supplies in microprocessor
(µP) and digital systems. The RESET/RESET outputs of
the MAX700/MAX701/MAX702 are guaranteed to be in
the correct state for VCC voltages down to +1V (Figure 4).
They provide excellent circuit reliability and low cost by
eliminating external components and adjustments when
used with +5V-powered circuits.
The MAX702 is the simplest part in the family. When
VCC falls to 4.65V, RESET goes low. The MAX702 also
provides a debounced manual-reset input. The MAX701
performs the same functions but has both RESET and
RESET outputs. Their primary function is to provide a
system reset. Accordingly, an active reset signal is
supplied for low supply voltages and for at least 200ms
after the supply voltage reaches its operating value.
In addition to the features of the MAX701 and MAX702,
the MAX700 provides preset or adjustable-voltage
detection so thresholds other than 4.65V can be select-
ed, and adjustable hysteresis. All parts are supplied in
8-pin PDIP and narrow-SO packages in commercial and
extended temperature ranges.
Applications●Computers●Controllers●Intelligent Instruments●Critical µP Power Monitoring
Features●Min 200ms RESET Pulse on Power-Up, Power-
Down, and During Low-Voltage Conditions●Reset Threshold Factory Trimmed for +5V Systems●No External Components or Adjustments with
+5V-Powered Circuits●Debounced Manual-Reset Input●Preset or Adjustable-Voltage Detection (MAX700)●Adjustable Hysteresis (MAX700)●8-Pin PDIP and Narrow-SO Packages
*Devices in PDIP and SO packages are available in both lead-
ed and lead(Pb)-free packaging. Specify lead free by adding
the + symbol at the end of the part number when ordering.
PART*TEMP RANGEPIN-PACKAGE
MAX700C/D0°C to +70°C Dice
MAX700CPA0°C to +70°C8 PDIP
MAX700CSA0°C to +70°C8 Narrow SO
MAX700EPA-40°C to +85°C8 PDIP
MAX700ESA-40°C to +85°C8 Narrow SO
MAX701C/D0°C to +70°CDice
MAX701CPA0°C to +70°C8 PDIP
MAX701CSA0°C to +70°C8 Narrow SO
MAX701EPA-40°C to +85°C8 PDIP
MAX701ESA-40°C to +85°C8 Narrow SO
MAX702C/D0°C to +70°CDice
MAX702CPA0°C to +70°C8 PDIP
MAX702CSA0°C to +70°C8 Narrow SO
MAX702EPA-40°C to +85°C8 PDIP
MAX702ESA-40°C to +85°C8 Narrow SO
RESET
RESETGND
VCC
CTLSENSE
HYST
DIP/SOTOP VIEW
MAX700RESET
RESET
GND
VCC
N.C.N.C.
N.C.
DIP/SO
MAX701N.C.
N.C.
RESET
GND
N.C.
VCC
N.C.
DIP/SO
MAX702
MAX700/MAX701/MAX702Power-Supply Monitor with Reset
Pin Conigurations
Ordering Information
VCC .....................................................................-0.3V to +15.5V
Voltage (with respect to GND) at RESET, RESET,
HYST, CTL, SENSE ...........................................-0.3V to VCC
Operating Temperature Range
C Suffix ...............................................................0°C to +70°C
E Suffix ...........................................................-40°C to +85°C
Rate of Rise, VCC ..........................................................100V/µs
Power Dissipation, Any Package ....................................380mW
Storage Temperature Range ............................-55°C to +150°C
Lead Temperature (soldering, 10s) .................................+300°C
(VCC = +5V, CTL = GND on MAX700, TA = +25°C, unless otherwise noted.)
PARAMETERCONDITIONSMINTYPMAXUNITSVCC Monitor Voltage Range
(MAX700 Only)TA = TMIN to TMAX, CTL = VCC315V
Min VCC for Valid Reset Output,
Declining SupplyTA = TMIN to TMAX, VRESET ≤ 0.4V when sinking 1mA1.51V
Supply Current100200µA
Reset ThresholdTA = TMIN to TMAX
Power-up4.504.654.75Power-down4.504.624.75
Internal HysteresisHYST not connected30mV
Reset Output Pulse Width200350500ms
RESET Fall TimeMAX700/MAX701 only, CLOAD = 100pF200ns
VCC Pulse Duration
Guaranteeing5V to 4V VCC pulse
No reset101Reset10010
MR Input Threshold0.7V
MR Pullup Current-5-30µA
MAX700RESET Output Low
ISINK = 3.2mA, VCC = 5V0.4ISINK = 1.6mA, VCC = 3V0.4
RESET Output High
ISOURCE = 3.2mA, VCC = 4.25VVCC - 0.4ISOURCE = 1.6mA, VCC = 3VVCC - 0.4
ISOURCE = 0.5mA, VCC = 1.5VVCC - 0.4
RESET Output Low
ISINK = 16mA, VCC = 4.25V0.4ISINK = 1.6mA, VCC = 3V0.4
ISINK = 0.4mA, VCC = 1.5V0.4
RESET Output HighISOURCE = 3.2mA, VCC = 5VVCC - 0.4VISOURCE = 1.6mA, VCC = 3VVCC - 0.4
MAX700/MAX701/MAX702Power-Supply Monitor with Reset
Absolute Maximum RatingsStresses 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.
Electrical Characteristics
(VCC = +5V, CTL = GND on MAX700, TA = +25°C, unless otherwise noted.)
PARAMETERCONDITIONSMINTYPMAXUNITS
MAX701RESET Output LowISINK = 16mA, VCC = 5V0.4V
RESET Output High
ISOURCE = 3.2mA, VCC = 4.25VVCC - 0.4ISOURCE = 1.6mA, VCC = 3VVCC - 0.4
ISOURCE = 0.5mA, VCC = 1.5VVCC - 0.4
RESET Output Low
ISINK = 3.2mA, VCC = 4.25V0.4ISINK = 1.6mA, VCC = 3V0.4
ISINK = 0.4mA, VCC = 1.5V0.4
RESET Output HighISOURCE = 3.2mA, VCC = 5VVCC - 0.4V
MAX702RESET Output Low
ISINK = 3.2mA, VCC = 4.25V0.4ISINK = 1.6mA, VCC = 3V0.4
ISINK = 0.4mA, VCC = 1.5V0.4
RESET Output HighISOURCE = 3.2mA, VCC = 5VVCC - 0.4V
MAX700 ONLY (CTL = VCC, unless otherwise noted)SENSE Input ThresholdTA = TMIN to TMAX1.251.291.35V
SENSE Input Current0.1nA
HYST Input On-Resistance0.5kΩ
CTL Input Threshold2V
CTL Pulldown Current30100µA
MAX700/MAX701/MAX702Power-Supply Monitor with Reset
Electrical Characteristics (continued)
PINNAMEFUNCTIONMAX700MAX701MAX70211MRInput for Manual Pushbutton Reset. Has internal 5µA pullup. Low input activates the
RESET/RESET outputs.——SENSE
The voltage-sense input when CTL = VCC. Its threshold is 1.29V. SENSE always
remains connected to the internal comparator. So, when VCC is being monitored
internally (CTL = GND), SENSE should be left open circuit.——HYST
Normally NOT used when voltage is monitored through VCC (CTL = GND). When
monitoring through SENSE (CTL = VCC), HYST allows hysteresis to be added,
reducing noise and spurious reset activity (Figure 3). HYST turns on 5µs before the
RESET/RESET outputs are activated, and its on-resistance to GND is typically 1kΩ.43GNDGround67RESETGoes low when VCC falls below 4.65V, or when CTL = VCC on the MAX700 goes low
when SENSE falls below 1.29V.5—RESETInverted Version of RESET——CTL
When CTL = GND, VCC is monitored by the reset circuit. When CTL = VCC, VCC
is ignored and SENSE is monitored, allowing the threshold to be set with external
resistors.82VCCChip Power and +5V Sensing Input (When CTL = GND on MAX700)2, 3, 74, 5, 6, 8N.C.No Connection
MAX700/MAX701/MAX702Power-Supply Monitor with Reset
Pin Description
Figure 4 shows the RESET output of the MAX700/
MAX701/MAX702 in the correct state for VCC voltages
down to 0V. Note the effect of the built-in hysteresis on
the trigger lever of RESET.
Figure 1. MAX700 Block Diagram
Figure 3. MAX700 Connected for External Senses and
Hysteresis
Figure 2. MAX700 Typical Connection Diagram
Figure 4. Typical MAX700/MAX701/MAX702 RESET Output vs.
VCC
PACKAGE
TYPE
PACKAGE
CODE
OUTLINE
NO.
LAND
PATTERN NO.8 PDIPP8+2
21-0143—RESET
1.29VREF
OSC
COMPARATOR
RESET
GND
VCC
CTL
SENSE
HYST
150k
MAX700GNDSENSE
MANUAL
RESET
BUTTON
HYSTN.C.R2
VIN
TO µP
VIN 3V TO 15V
VL = LOWER VOLTAGE THRESHOLDR1 = R2 ( VL - 1)
1.29
R3 = VTR1
VU - VLVU = UPPER VOLTAGE THRESHOLD
HYSTERESIS = VU - VL
MAX700RESET
RESET
VCC
CTL
GNDSENSE
MANUAL
RESET
BUTTON
HYSTN.C.
N.C.
TO µP
+5V
MAX700RESET
RESET
VCC
CTL
RESET
2V/div
2V/div
1s/div
VCC
MAX700/MAX701/MAX702Power-Supply Monitor with Reset
Package InformationFor the latest package outline information and land patterns
(footprints), go to www.maximintegrated.com/packages. Note
that a “+”, “#”, or “-” in the package code indicates RoHS status
only. Package drawings may show a different suffix character, but
the drawing pertains to the package regardless of RoHS status.
REVISION
NUMBER
REVISION
DATEDESCRIPTIONPAGES
CHANGED3/90Initial release—11/05Added lead-free information to the Ordering Information table.112/07Updated Pin Description table.45/14No /V OPNs; removed automotive reference from Applications section1
Power-Supply Monitor with Reset
MAX700/MAX701/MAX702
Revision HistoryFor pricing, delivery, and ordering information, please contact Maxim Direct at 1-888-629-4642, or visit Maxim Integrated’s website at www.maximintegrated.com.
