General Description
The MAX705–MAX708/MAX813L microprocessor (µP)
supervisory circuits reduce the complexity and number of
components required to monitor power-supply and battery
functions in µP systems. These devices signicantly improve
system reliability and accuracy compared to separate ICs or
discrete components.
The MAX705/MAX706/MAX813L provide four functions:
1) A reset output during power-up, power-down, and
brownout conditions.
2) An independent watchdog output that goes low if
the watchdog input has not been toggled within 1.6
seconds.
3) A 1.25V threshold detector for power-fail warning, low-
battery detection, or for monitoring a power supply
other than +5V.
4) An active-low manual-reset input.
The MAX707/MAX708 are the same as the MAX705/
MAX706, except an active-high reset is substituted for
the watchdog timer. The MAX813L is the same as the
MAX705, except RESET is provided instead of RESET.
Two supply-voltage monitor levels are available: The
MAX705/MAX707/MAX813L generate a reset pulse when
the supply voltage drops below 4.65V, while the MAX706/
MAX708 generate a reset pulse below 4.40V. All four parts
are available in 8-pin DIP, SO, and µMAX® packages.
Applications
●Computers
●Controllers
●Intelligent Instruments
● Critical μP Power Monitoring
Benets and Features
●Supervisory-Function Integration Significantly
Improves System Reliability While Reducing Board
Space
• μMAX Package
• Guaranteed RESET Valid at VCC = 1V
- 200ms Reset Pulse Width
- Debounced TTL/CMOS-Compatible Manual-
Reset Input
- Active-High Reset Output (MAX707/MAX708/
MAX813L)
• Precision-Supply Voltage Monitor
- 4.65V (MAX705/MAX707/MAX813L)
- 4.40V (MAX706/MAX708)
• Voltage Monitor for Power-Fail or Low-Battery
Warning
19-4334; Rev. 10; 4/15
µMAX is a registered trademark of Maxim Integrated Products, Inc.
*Dice are specified at TA = +25°C.
**Contact factory for availability and processing to MIL-STD-883.
Devices in PDIP, SO, and μMAX packages are available in both
leaded and lead(Pb)-free/RoHS-compliant packaging. Specify
lead-free by adding the + symbol at the endof the part number
when ordering.
Lead-free packaging is not available for CERDIP packages.
PART TEMP RANGE PIN-PACKAGE
MAX705CPA 0°C to +70°C 8 Plastic DIP
MAX705CSA 0°C to +70°C 8 SO
MAX705CUA 0°C to +70°C 8 μMAX
MAX705C/D 0°C to +70°C Dice*
Pin Configurations appear at end of data sheet.
Ordering Information continued at end of data sheet.
VCC
PFI
MR PFO
WDO
RESET
UNREGULATED DC
PUSHBUTTON
SWITCH
PFI I/O LINE
INTERRUPT
µP
MAX705
MAX706
MAX813L
MAX667
+5V DC LINEAR
REGULATOR
VCC
RESET
NMI
MAX705–MAX708/MAX813L Low-Cost, μP Supervisory Circuits
Typical Operating Circuit
Ordering Information
Terminal Voltage (with respect to GND)
VCC ..................................................................... -0.3V to 6.0V
All Other Inputs (Note 1) ..................... -0.3V to (VCC + 0.3V)
Input Current
VCC ................................................................................. 20mA
GND ...............................................................................20mA
Output Current (all outputs) ................................................20mA
Continuous Power Dissipation (TA = +70°C)
Plastic DIP (derate 9.09mW/°C above +70°C) ............727mW
SO (derate 5.88mW/°C above +70°C) ........................471mW
μMAX (derate 4.10mW/°C above +70°C) ...................330mW
CERDIP (derate 8.00mW/°C above +70°C) ................640mW
Operating Temperature Ranges
MAX70_C__, MAX813LC__ ...............................0°C to +70°C
MAX70_E__, MAX813LE__ .......................... -40°C to +85°C
MAX70_MJA ................................................. -55°C to +125°C
Storage Temperature Range ............................ -65°C to +160°C
Lead Temperature (soldering, 10s) .................................+300°C
Soldering Temperature (reflow)
Lead(Pb)-free...............................................................+260°C
Containing Lead(Pb) ....................................................+240°C
(VCC = 4.75V to 5.5V for MAX705/MAX707/MAX813L, VCC = 4.5V to 5.5V for MAX706/MAX708, TA = TMIN to TMAX, unless otherwise
noted.)
PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS
Operating Voltage Range VCC
MAX70_C 1.0 5.5
VMAX813LC 1.1 5.5
MAX70_E/M, MAX813LE/M 1.2 5.5
Supply Current ISUPPLY
MAX705C, MAX706C, MAX813LC 150 350
µA
MAX705E/M, MAX706E/M, MAX813LE/M 150 500
MAX707C, MAX708C 50 350
MAX707E/M, MAX708E/M 50 500
Reset Threshold (Note 2) VRT
MAX705, MAX707, MAX813L 4.50 4.65 4.75 V
MAX706, MAX708 4.25 4.40 4.50
Reset Threshold Hysteresis (Note 2) 40 mV
Reset Pulse Width (Note 2) tRS 140 200 280 ms
RESET Output Voltage
ISOURCE = 800μA VCC - 1.5
V
ISINK = 3.2mA 0.4
MAX70_C, VCC = 1V, ISINK = 50μA 0.3
MAX70_E/M, VCC = 1.2V, ISINK = 100μA 0.3
RESET Output Voltage
MAX707, MAX708, ISOURCE = 800μA V
CC
- 1.5
V
MAX707, MAX708, ISINK = 1.2mA 0.4
MAX813LC, ISOURCE = 4μA, VCC = 1.1V 0.8
MAX813LE/M, ISOURCE = 4μA, VCC = 1.2V 0.9
MAX813L I
SOURCE
= 800μA V
CC
- 1.5
I
SINK
= 3.2mA 0.4
MAX705–MAX708/MAX813L MAX705–MAX708/MAX813L
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Note 1: The input-voltage limits on PFI and MR can be exceeded if the input current is less than 10mA.
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.
Electrical Characteristics
(VCC = 4.75V to 5.5V for MAX705/MAX707/MAX813L, VCC = 4.5V to 5.5V for MAX706/MAX708, TA = TMIN to TMAX, unless otherwise
noted.)
Note 2: Applies to both RESET in the MAX705–MAX708 and RESET in the MAX707/MAX708/MAX813L.
PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS
Watchdog Timeout Period t
WD
MAX705, MAX706, MAX813L 1.00 1.60 2.25 s
WDI Pulse Width t
WP
V
IL
= 0.4V, V
IH
= (V
CC
) (0.8) 50 ns
WDI Input Threshold Low MAX705, MAX706, MAX813L, V
CC
= 5V 0.8 V
High 3.5
WDI Input Current MAX705, MAX706, MAX813L, V
CC
= 5V 50 150 µA
MAX705, MAX706, MAX813L, WDI = 0V -150 -50
WDO Output Voltage
MAX705, MAX706, MAX813L,
I
SOURCE
= 800μA V
CC
- 1.5
V
MAX705, MAX706, MAX813L,
I
SINK
= 1.2mA 0.4
MR Pull-Up Current MR = 0V 100 250 600 μA
MR Pulse Width t
MR
150 ns
MR Input Threshold Low 0.8 V
High 2.0
MR to Reset Out Delay (Note 2) t
MD
250 ns
PFI Input Threshold V
CC
= 5V 1.20 1.25 1.30 V
PFI Input Current -25.00 +0.01 +25.00 nA
PFO Output Voltage I
SOURCE
= 800μA V
CC
- 1.5 V
I
SINK
= 3.2mA 0.4
MAX705–MAX708/MAX813L MAX705–MAX708/MAX813L
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Electrical Characteristics (continued)
MAX705/MAX707
RESET RESPONSE TIME
2µs/div
VCC
+5V
RESET
+5V
+4V
1V/div
0V
TA = +25°C
VCC
GND
RESET
VCC 10kΩ
RESET
30pF
MAX705 toc02
POWER-FAIL COMPARATOR
DE-ASSERTION RESPONSE TIME
400ns/div
PFI
+1.20V
PFO
0V
+3V
+1.30V
VCC = +5V
TA = +25°C
+5V
PFO
30pF 1kΩ
+1.25V
PFI
MAX705 toc08
POWER-FAIL COMPARATOR
ASSERTION RESPONSE TIME
400ns/div
PFI
+1.30V
PFO
+5V
0V
+1.20V
1V/div 50mV/div
+5V
PFO
30pF
1kΩ
+1.25V
PFI
VCC = +5V
TA = +25°C
MAX705 toc04
MAX707
RESET, RESET ASSERTION
400ns/div
0V
+5V
RESET
RESET
1V/div
VCC = VRT
TA = +25°C
+5V
0V
VCC
GND
RESET 10k
330pF
RESET
10kΩ
330pF
MAX705 toc05
MAX707
RESET, RESET DE-ASSERTION
400ns/div
0V
+5V
RESET
RESET
2V/div
VCC = VRT
TA = +25°C
+5V
0V
VCC
GND
RESET
RESET
10kΩ
330pF
10k
330pF
MAX705 toc06
MAX707/MAX708/MAX813L
RESET OUTPUT VOLTAGE
vs. SUPPLY VOLTAGE
500ms/div
VCC
0V
RESET
0V
+5V
1V/div
+5V
1V/div
TA = +25°C
GND
RESET
VCC
330pF 10kΩ
MAX705 toc07
MAX705/MAX707
RESET OUTPUT VOLTAGE
vs. SUPPLY VOLTAGE
500ms/div
VCC
0V
RESET
0V
+5V
1V/div
+5V
1V/div
VCC
GND
RESET
VCC 2kΩ
RESET
330pF
TA = +25°C
MAX705 toc01
MAX813L
RESET RESPONSE TIME
2µs/div
+5V
VCC
0V
0V
+4V
+4V
GND
RESET
VCC
330pF 10kΩ
MAX705 toc08
MAX705–MAX708/MAX813L MAX705–MAX708/MAX813L
Low-Cost, μP Supervisory Circuits
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Typical Operating Characteristics
PIN
NAME FUNCTION
MAX705/MAX706 MAX707/MAX708 MAX813L
DIP/SO μMAX DIP/SO μMAX DIP/SO μMAX
1 3 1 3 1 3 MR
Manual-Reset Input triggers a reset pulse when
pulled below 0.8V. This active-low input has an
internal 250μA pullup current. It can be driven from a
TTL or CMOS logic line, as well as shorted to ground
with a switch.
2 4 2 4 2 4 VCC +5V Supply Input
3 5 3 5 3 5 GND 0V Ground Reference for all signals
4 6 4 6 4 6 PFI
Power-Fail Voltage-Monitor Input. When PFI is less
than 1.25V, PFO goes low. Connect PFI to GND or
VCC when not used.
5 7 5 7 5 7 PFO Power-Fail Output goes low and sinks current when
PFI is less than 1.25V; otherwise PFO stays high.
6 8 — — 6 8 WDI
Watchdog Input. If WDI remains high or low for
1.6sec, the internal watchdog timer runs out and
WDO goes low (Figure 1). Floating WDI or connecting
WDI to a high-impedance three-state buffer disables
the watchdog feature. The internal watchdog timer
clears whenever reset is asserted, WDI is three
stated, or WDI sees a rising or falling edge.
— — 6 — — — N.C. No Connect
7 1 7 1 — — RESET
Active-Low Reset Output pulses low for 200ms when
triggered, and stays low whenever VCC is below the
reset threshold (4.65V in the MAX705 and 4.40V in
the MAX706). It remains low for 200ms after VCC
rises above the reset threshold or MR goes from low
to high (Figure 3). A watchdog timeout will not trigger
RESET unless WDO is connected to MR.
8 2 — — 8 2 WDO
Watchdog Output pulls low when the internal
watchdog timer nishes its 1.6sec count and does
not go high again until the watchdog is cleared. WDO
also goes low during low-line conditions. Whenever
VCC is below the reset threshold, WDO stays low;
however, unlike RESET, WDO does not have a
minimum pulse width. As soon as VCC rises above
the reset threshold, WDO goes high with no delay.
— — 8 2 7 1 RESET
Active-High RESET Output is the inverse of RESET.
Whenever RESET is high, RESET is low, and vice
versa (Figure 2). The MAX813L has a RESET output
only.
MAX705–MAX708/MAX813L MAX705–MAX708/MAX813L
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Pin Description
Detailed Description
Reset Output
A microprocessor’s (μP’s) reset input starts the μP in a
known state. Whenever the μP is in an unknown state, it
should be held in reset. The MAX705–MAX708/MAX813L
assert reset during power-up and prevent code execution
errors during power-down or brownout conditions.
On power-up, once VCC reaches 1V, RESET is a
guaranteed logic low of 0.4V or less. As VCC rises, RESET
stays low. When VCC rises above the reset threshold, an
internal timer releases RESET after about 200ms. RESET
pulses low whenever VCC dips below the reset threshold,
i.e. brownout condition. If brownout occurs in the middle
of a previously initiated reset pulse, the pulse continues
for at least another 140ms. On power-down, once VCC
falls below the reset threshold, RESET stays low and is
guaranteed to be 0.4V or less until VCC drops below 1V.
The MAX707/MAX708/MAX813L active-high RESET
output is simply the complement of the RESET output,
and is guaranteed to be valid with VCC down to 1.1V.
Some μPs, such as Intel’s 80C51, require an active-high
reset pulse.
Watchdog Timer
The MAX705/MAX706/MAX813L watchdog circuit
monitors the μP’s activity. If the μP does not toggle the
watchdog input (WDI) within 1.6sec and WDI is not three
stated, WDO goes low. As long as RESET is asserted or
the WDI input is three stated, the watchdog timer stays
cleared and will not count. As soon as reset is released
and WDI is driven high or low, the timer starts counting.
Pulses as short as 50ns can be detected.
Typically, WDO is not connected to the nonmaskable
interrupt input (NMI) of a μP. When VCC drops below
the reset threshold, WDO goes low whether or not
the watchdog timer has timed out yet. Normally this
would trigger an NMI interrupt, but RESET goes low
simultaneously, and thus overrides the NMI interrupt.
If WDI is left unconnected, WDO can be used as a low-
line output. Since oating WDI disables the internal timer,
WDO goes low only when VCC falls below the reset
threshold, thus functioning as a low-line output.
The MAX705/MAX706 have a watchdog timer and a
RESET output. The MAX707/MAX708 have both active-
high and active-low reset outputs. The MAX813L has both
an active-high reset output and a watchdog timer.
Manual Reset
The manual-reset input (MR) allows reset to be triggered
by a pushbutton switch. The switch is effectively
debounced by the 140ms minimum reset pulse width. MR
is TTL/CMOS-logic compatible, so it can be driven by an
external logic line. MR can be used to force a watchdog
timeout to generate a reset pulse in the MAX705/ MAX706/
MAX813L. Simply connect WDO to MR.
Figure 1. MAX705/MAX706/MAX813L Block Diagram Figure 2. MAX707/MAX708 Block Diagram
WATCHDOG
TIMER
TIMEBASE FOR
RESET AND
WATCHDOG
RESET
GENERATOR
VCC
250µA
8WDO
7RESET
(RESET)
5PFO
GND3
1.25V
4.65V*
* 4.40V FOR MAX7O6.
( ) ARE FOR MAX813L ONLY.
6
WDI
1
MR
2
VCC
4
PFI
MAX705
MAX706
MAX813L
WATCHDOG
TRANSITION
DETECTOR
RESET
GENERATOR
8RESET
7RESET
5PFO
1.25V
4.65V*
* 4.40V FOR MAX7O6.
1
MR
2
VCC
4
PFI
MAX707
MAX708
VCC
250µA
GND3
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Power-Fail Comparator
The power-fail comparator can be used for various
purposes because its output and noninverting input are
not internally connected. The inverting input is internally
connected to a 1.25V reference.
To build an early-warning circuit for power failure, connect
the PFI pin to a voltage divider (see Typical Operating
Circuit). Choose the voltage divider ratio so that the
voltage at PFI falls below 1.25V just before the +5V
regulator drops out. Use PFO to interrupt the μP so it can
prepare for an orderly power-down.
Applications Information
Ensuring a Valid RESET Output Down to
VCC = 0V
When VCC falls below 1V, the MAX705–MAX708 RESET
output no longer sinks current—it becomes an open
circuit. High-impedance CMOS logic inputs can drift
to undetermined voltages if left undriven. If a pulldown
resistor is added to the RESET pin, as shown in Figure
5, any stray charge or leakage currents will be drained
to ground, holding RESET low. Resistor value (R1) is not
critical. It should be about 100kΩ, large enough not to load
RESET and small enough to pull RESET to ground.
Monitoring Voltages Other Than the
Unregulated DC Input
Monitor voltages other than the unregulated DC by
connecting a voltage-divider to PFI and adjusting the ratio
appropriately. If required, add hysteresis by connecting a
resistor (with a value approximately 10 times the sum of
the two resistors in the potential divider network) between
PFI and PFO. A capacitor between PFI and GND reduces
the power-fail circuit’s sensitivity to high-frequency noise
on the line being monitored. RESET can be asserted on
other voltages in addition to the +5V VCC line. Connect
PFO to MR to initiate a RESET pulse when PFI drops
below 1.25V. Figure 6 shows the MAX705–MAX708
congured to assert RESET when the +5V supply falls
below the reset threshold, or when the +12V supply falls
below approximately 11V.
Monitoring a Negative Voltage
The power-fail comparator can also monitor a negative
supply rail (Figure 7). When the negative rail is good (a
negative voltage of large magnitude), PFO is low, and
when the negative rail is degraded (a negative voltage of
lesser magnitude), PFO is high. By adding the resistors
and transistor as shown, a high PFO triggers a reset.
As long as PFO remains high, the MAX705–MAX708/
MAX813L keep reset asserted (RESET = low, RESET =
high). Note that this circuit’s accuracy depends on the PFI
threshold tolerance, the VCC line, and the resistors.
Figure 3. MAX705/MAX706/MAX813L Watchdog Timing
Figure 4. MAX705/MAX706 RESET, MR, and WDO Timing with
WDI Three Stated. The MAX707/MAX708/MAX813L RESET
output is the inverse of RESET shown.
tWP tWD
+5V
0V
WDI
+5V
0V
WDO
+5V
0V
RESET
+5V
0V
(RESET)
tRS
( ) ARE FOR MAX813L ONLY.
RESET EXTERNALLY
TRIGGERED BY MR
tWD tWD
tRS
+5V
0V
RESET
WDO
+5V
0V
MR
tMR
MR EXTERNALLY DRIVEN LOW
+5V
0V
VCC
VRT VRT
tMD
tRS
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Interfacing to μPs with
Bidirectional Reset Pins
μPs with bidirectional reset pins, such as the Motorola
68HC11 series, can contend with the MAX705–MAX708
RESET output. If, for example, the RESET output is
driven high and the μP wants to pull it low, indeterminate
logic levels may result. To correct this, connect a 4.7kΩ
resistor between the RESET output and the μP reset I/O,
as in Figure 8. Buffer the RESET output to other system
components.
Figure 5. RESET Valid to Ground Circuit
Figure 7. Monitoring a Negative Voltage
Figure 6. Monitoring Both +5V and +12V
Figure 6. Monitoring Both +5V and +12V
MAX70_
RESET
R1
MAX70_
RESET
R2
R1
+5V
V-
VCC
PFI
GND
MR
PFO
TO µP
100kΩ
100kΩ
2N3904
MR
PFO
+5V
0V
+5V
0V
VTRIP 0V
V-
5 1.25
R1
1.25 VTRIP
R2
,V
TRIP 0
–=–<
MAX70_
RESET
130kΩ
1%
PARAMETER MIN TYP MAX UNIT
+12V Reset
Threshold at +25°C 10.67 10.87 11.50 V
1MΩ
1%
+5V
+12V
VCC
PFI
GND
MR
PFO
TO µP
MAX70_
BUFFERED RESET TO OTHER SYSTEM COMPONENTS
4.7kΩ
VCC
GND
RESET
VCC
GND
RESET
µP
MAX705–MAX708/MAX813L MAX705–MAX708/MAX813L
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PART TEMP RANGE PIN-PACKAGE
MAX705EPA -40°C to +85°C 8 Plastic DIP
MAX705ESA -40°C to +85°C 8 SO
MAX705EUA -40°C to +85°C 8 μMAX
MAX705MJA -55°C to +125°C 8 CERDIP**
MAX706CPA 0°C to +70°C 8 Plastic DIP
MAX706CSA 0°C to +70°C 8 SO
MAX706CUA 0°C to +70°C 8 μMAX
MAX706C/D 0°C to +70°C Dice*
MAX706EPA -40°C to +85°C 8 Plastic DIP
MAX706ESA -40°C to +85°C 8 SO
MAX706EUA -40°C to +85°C 8 μMAX
MAX706MJA -55°C to +125°C 8 CERDIP**
MAX707CPA 0°C to +70°C 8 Plastic DIP
MAX707CSA 0°C to +70°C 8 SO
MAX707CUA 0°C to +70°C 8 μMAX
MAX707C/D 0°C to +70°C Dice*
MAX707EPA -40°C to +85°C 8 Plastic DIP
MAX707ESA -40°C to +85°C 8 SO
MAX707EUA -40°C to +85°C 8 μMAX
MAX707MJA -55°C to +125°C 8 CERDIP**
MAX708CPA 0°C to +70°C 8 Plastic DIP
MAX708CSA 0°C to +70°C 8 SO
MAX708CUA 0°C to +70°C 8 μMAX
MAX708C/D 0°C to +70°C Dice*
MAX708EPA -40°C to +85°C 8 Plastic DIP
MAX708ESA -40°C to +85°C 8 SO
MAX708EUA -40°C to +85°C 8 μMAX
MAX708MJA -55°C to +125°C 8 CERDIP**
MAX813LCPA 0°C to +70°C 8 Plastic DIP
MAX813LCSA 0°C to +70°C 8 SO
MAX813LCUA 0°C to +70°C 8 μMAX
MAX813LC/D 0°C to +70°C Dice*
MAX813LEPA -40°C to +85°C 8 Plastic DIP
MAX813LESA -40°C to +85°C 8 SO
MAX813LEUA -40°C to +85°C 8 μMAX
MAX813LMJA -55°C to +125°C 8 CERDIP**
*Dice are specified at TA = +25°C.
**Contact factory for availability and processing to MIL-STD-883.
Devices in PDIP, SO and μMAX packages are available in both
leaded and lead-free packaging. Specify lead free by adding the
+ symbol at the end of the part number when ordering.
Lead-free not available for CERDIP package.
TOP VIEW
1
2
3
4
8
7
6
5
WDO
RESET
WDI
PFO
PFI
PFI
VCC
MR
µMAX
MAX705
MAX706
MAX813L
1
2
3
4
8
7
6
5
N.C.
GND
GND
VCC
MR
µMAX
MAX707
MAX708
( ) ARE FOR MAX813L ONLY.
(RESET) RESET
PFO
RESET
MAX705–MAX708/MAX813L MAX705–MAX708/MAX813L
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Pin Congurations
Ordering Information (continued)
TOP VIEW
1
2
3
4
8
7
6
5
WDO
RESET (RESET)
WDI
PFO
PFI
GND
VCC
MR
DIP/SO
MAX705
MAX706
MAX813L
1
2
3
4
8
7
6
5
RESET
RESET
N.C.
PFO
PFI
GND
VCC
MR
DIP/SO
MAX707
MAX708
( ) ARE FOR MAX813L ONLY.
Part Number
Nominal Reset
Threshold (V)
Minimum Reset
Pulse Width (ms)
Active-Low
Reset
Active-High
Reset
RESET Valid to VCC = 1V
Nominal Watchdog Timeout
Period (sec), if Available
Separate Watchdog Output
Backup-Battery Switch
VCC-to-VOUT On
Resistance Max (Ω)
VBATT - to-VOUT On
Resistance Max (Ω)
CE Write Protect
Power-Fail Comparator
Manual-Reset Input
Low-Line Output
Battery-On Output
ISUPPLY Operating Mode mA
max (typ)
ISUPPLY Backup Mode
µA max (typ)
Pins
Price† 1000-up ($)
MAX1232 4.37/4.62 250 ü ü ü 0.15/0.6/1.2 ü0.2(0.05) 8 1.71
MAX690A/692A 4.65/4.40 140 ü ü 1.6 ü10 400 ü0.35(0.2) 5(0.05) 8 3.26
MAX690R/S/T 2.63/2.93/3.08 140 ü ü 1.6 ü6 400 ü0.5(0.4) 1(0.4) 8 3.23
MAX691A/693A 4.65/4.40 140/adj. ü ü ü 1.6/adj. ü ü 1.2 25 ü/10ns ü ü 0.1(0.035) 5(0.04) 16 3.61
MAX1691 The MAX1691 is a module with the MAX691A and a 125mAh lithium battery 16 ††
MAX696 Adj. 35/adj. ü ü 1.6/adj. ü ü ü ü 16 3.55
MAX697 Adj. 35/adj. ü ü 1.6/adj. ü ü ü 16 3.58
MAX700 4.65/adj. 200 ü ü ü 0.2(0.1) 8 2.17
MAX703/704 4.65/4.40 140 ü ü ü 10 400 ü ü 0.35(0.2) 5(0.05) 8 1.38*
MAX704R/S/T 2.63/2.93/3.08 140 ü ü 1.6 ü ü 6 400 ü ü 0.5(0.4) 1(0.4) 8 2.93
MAX705/706 4.65/4.40 140 ü ü 1.6 ü ü ü 0.35(0.2) 8 1.02*
MAX706P 2.63 140 ü ü 1.6 ü ü ü 0.35(0.2) 8 1.71
MAX706R/S/T 2.63/2.93/3.08 140 ü ü ü ü 0.35(0.2) 8 1.71
MAX707/708 4.65/4.40 140 ü ü ü ü ü 0.35(0.2) 8 0.88*
MAX708R/S/T 2.63/2.93/3.08 140 ü ü ü ü ü 0.35(0.2) 8 1.63
MAX791 4.65 140 ü ü ü 1ü ü 1.2 25 ü/10ns ü ü ü ü 0.15(0.06) 5(0.04) 16 3.90
MAX802L/M/R/S/T 4.60/4.40/
2.63/2.93/3.08 140 ü ü ü 1ü ü/10ns ü0.15(0.07) 16 3.42
MAX793R/S/U/T 2.63/2.93/3.07/3.08 140 ü ü ü 1.6 ü ü TBD TBD ü ü TBD TBD 16 ††
MAX794 Adj. 140 ü ü ü 1.6 ü ü TBD TBD ü ü TBD TBD 8 ††
MAX795R/S/U/T 2.63/2.93/3.07/3.08 140 ü ü ü TBD TBD üTBD TBD 16 ††
MAX800L/M 4.60/4.40 140 ü ü ü 1.6/adj. ü ü 1.2 25 ü/10ns ü/±2% ü0.1(0.035) 5(0.04) 8 3.88
MAX801L/N/M 4.68/4.58/4.43 140 ü/±1.5% ü1.6 üTBD TBD TBD TBD 8 ††
MAX802L/M/R/S/T 4.60/4.40/
2.63/2.93/3.08 140 ü ü 1.6 ü10 400 ü/±2% 0.35(0.2) 5(0.05) 8 3.59
MAX804R/S/T 2.63/2.93/3.08 140 ü ü 1.6 ü6 400 ü/±2% 0.5(0.4) 1(0.4) 8 3.66
MAX805L/M/R/S/T 4.65/4.40/
2.63/2.93/3.08 140 ü ü 1.6 ü10 400 ü0.35(0.2) 5(0.05) 8 3.26
MAX806R/S/T 2.63/2.93/3.08 140 ü ü ü ü 6 400 ü/±2% ü0.5(0.4) 1(0.4) 8 3.90
MAX807L/N/M 4.68/4.58/4.43 140 ü/±1.5% ü/±1.5% ü1.6 ü ü TBD TBD ü ü ü ü ü TBD TBD 8 ††
MAX808L/N/M 4.68/4.58/4.43 140 ü/±1.5% ü ü TBD TBD ü ü TBD TBD 16 ††
MAX809L/M/R/S/T 4.65/4.40/
2.63/2.93/3.08 140 ü ü 0.06
(0.024) 3 ††
MAX810L/M/R/S/T 4.65/4.40/
2.63/2.93/3.08 140 ü ü 0.06
(0.024) 3 ††
MAX813L 4.65 140 ü1.6 üü/±2% ü0.35(0.2) 8 1.02*
MAX814K/L/N/T 4.80/4.70/4.55/3.03 140 ü/±1% ü/±1% üü/±2% ü ü TBD TBD 8 ††
MAX815K/L/N/T 4.80/4.70/4.55/3.03 140 ü/±1% ü1.6 üü/±2% üTBD TBD 8 ††
MAX816 Adj./±1% 140 ü ü ü ü/±2% üTBD TBD 8 ††
MAX820L/M/R/S/T 4.65/4.40/
2.63/2.93/3.08 140 ü ü ü 1üü/10ns ü/±2% ü ü 0.15
(0.07) 16 3.82
MXD1210 4.37/4.62 ü2.5 667 ü0.5 (0.23) 0.1(0.002) 8 2.44
MAX705–MAX708/MAX813L MAX705–MAX708/MAX813L
Low-Cost, μP Supervisory Circuits
www.maximintegrated.com Maxim Integrated
│
10
Ordering Information
PACKAGE TYPE PACKAGE CODE OUTLINE NO.
8 μMAX U8+1 21-0036
8 Plastic DIP P8+1 21-0043
8 SO S8+2 21-0041
RESET (RESET)
GND
WDO/RESET
PFI
0.051"
(1.30mm)
0.074"
(1.88mm)
( ) ARE FOR MAX813L ONLY.
TRANSISTOR COUNT: 572
SUBSTRATE MUST BE LEFT UNCONNECTED.
WDI/N.C.
PFO
VCC MR
MAX705–MAX708/MAX813L MAX705–MAX708/MAX813L
Low-Cost, μP Supervisory Circuits
www.maximintegrated.com Maxim Integrated
│
11
Package Information
For 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 sufx character, but the drawing
pertains to the package regardless of RoHS status.
Chip Topography
REVISION
NUMBER
REVISION
DATE DESCRIPTION PAGES
CHANGED
0 2/92 Initial release —
8 3/10 Updated the Features, Absolute Maximum Ratings, Typical Operating
Characteristics, Figures 3, 7, 8, and the Package Information sections 1, 2, 4, 7, 8, 10
9 1/13 Updated package code for 8 SO package 11
10 4/15 Deleted “Automotive Systems” from Applications and updated Benets and Features
sections 1
Maxim Integrated cannot assume responsibility for use of any circuitry other than circuitry entirely embodied in a Maxim Integrated product. No circuit patent licenses
are implied. Maxim Integrated reserves the right to change the circuitry and specications without notice at any time. The parametric values (min and max limits)
shown in the Electrical Characteristics table are guaranteed. Other parametric values quoted in this data sheet are provided for guidance.
Maxim Integrated and the Maxim Integrated logo are trademarks of Maxim Integrated Products, Inc.
MAX705–MAX708/MAX813L Low-Cost, μP Supervisory Circuits
© 2015 Maxim Integrated Products, Inc.
│
12
Revision History
For pricing, delivery, and ordering information, please contact Maxim Direct at 1-888-629-4642, or visit Maxim Integrated’s website at www.maximintegrated.com.
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Maxim Integrated:
MAX705CPA+ MAX705CSA+ MAX705ESA+ MAX706CPA+ MAX706CSA+ MAX706ESA+ MAX707CPA+
MAX707CSA+ MAX707ESA+ MAX708CPA+ MAX708CSA+ MAX708CSA+T MAX708ESA+ MAX813LCPA+
MAX813LCSA+ MAX813LEPA+ MAX813LESA+ MAX813LCSA+T MAX813LESA+T MAX705MJA/883B
MAX706MJA/883B MAX707MJA/883B MAX708MJA/883B MAX705CSA+T MAX705CUA+ MAX705CUA+T
MAX705EPA+ MAX705ESA+T MAX705EUA+ MAX705EUA+T MAX706CSA+T MAX706CUA+ MAX706CUA+T
MAX706EPA+ MAX706ESA+T MAX706EUA+ MAX706EUA+T MAX707CSA+T MAX707CUA+ MAX707CUA+T
MAX707EPA+ MAX707ESA+T MAX708CUA+ MAX708CUA+T MAX708ESA+T MAX708EPA MAX813LMJA
MAX813LMJA/883B MAX705MJA MAX708MSA/PR 5962-9326703MPA 5962-9326701MPA 5962-9312502MEA
5962-9312501MEA