19-2379; Rev 0; 4/02
Low-Voltage, High-Accuracy, Quad Voltage
Monitors in µMAX Package
General Description
The MAX6709/MAX6714 quad voltage monitors provide
accurate monitoring of up to four supplies without any
external components. A variety of factory-trimmed thresh-
old voltages and supply tolerances are available to opti-
mize the MAX6709/MAX6714 for specific applications.
The selection includes input options for monitoring 5.0V,
3.3V, 3.0V, 2.5V, and 1.8V voltages. Additional high-input-
impedance comparator options can be used as
adjustable voltage monitors, general-purpose compara-
tors, or digital-level translators.
The MAX6709 provides four independent open-drain
outputs with 10µA internal pullup to V
CC
. The MAX6714
provides an active-low, open-drain
RESET
output with
integrated reset timing and three power-fail comparator
outputs.
Each of the monitored voltages is available with trip
thresholds to support power-supply tolerances of either
5% or 10% below the nominal voltage. An internal
bandgap reference ensures accurate trip thresholds
across the operating temperature range.
The MAX6709 consumes only 35µA (typ) of supply cur-
rent. The MAX6714 consumes only 60µA (typ) of supply
current. The MAX6709/MAX6714 operate with supply
voltages of 2.0V to 5.5V. An internal undervoltage lock-
out circuit forces all four digital outputs low when V
CC
drops below the minimum operating voltage. The four
digital outputs have weak internal pullups to V
CC
,
accommodating wire-ORed connections. Each input
threshold voltage has an independent output. The
MAX6709/MAX6714 are available in a 10-pin µMAX
package and operate over the extended (-40°C to
+85°C) temperature range.
Features
o
Monitor Four Power-Supply Voltages
o
Precision Factory-Set Threshold Options for 5.0V,
3.3V, 3.0V, 2.5V, and 1.8V (Nominal) Supplies
o
Adjustable Voltage Threshold Monitors Down to
0.62V
o
High-Accuracy (±2.0%) Adjustable Threshold
Inputs
o
Low Supply Current
MAX6709: 35µA
MAX6714: 60µA
o
Four Independent, Active-Low, Open-Drain
Outputs with 10µA Internal Pullup to V
CC
o
140ms (min) Reset Timeout Period
(MAX6714 only)
o
2.0V to 5.5V Supply Voltage Range
o
Immune to Supply Transients
o
Fully Specified from -40°C to +85°C
o
Small 10-Pin µMAX Package
MAX6709/MAX6714
Ordering Information
PART
MAX6709_UB*
TEMP RANGE
-40°C to +85°C
PIN-PACKAGE
10 µMAX
MAX6714_UB*
-40°C to +85°C
10 µMAX
*Insert
the desired letter from the Selector Guide into the blank
to complete the part number.
Applications
Telecommunications
Servers
High-End Printers
Desktop and Notebook Computers
Data Storage Equipment
Networking Equipment
Multivoltage Systems
TOP VIEW
IN1
1
IN2
IN3
IN4
GND
2
3
4
5
10
V
CC
9
PWRGD1
PWRGD2
PWRGD3
PWRGD4
Pin Configurations
MAX6709
8
7
6
Typical Operating Circuits appear at end of data sheet.
Selector Guides appear at end of data sheet.
µMAX
Pin Configurations continued at end of data sheet.
________________________________________________________________
Maxim Integrated Products
1
For pricing, delivery, and ordering information, please contact Maxim/Dallas Direct! at
1-888-629-4642, or visit Maxim’s website at www.maxim-ic.com.
Low-Voltage, High-Accuracy, Quad Voltage
Monitors in µMAX Package
MAX6709/MAX6714
ABSOLUTE MAXIMUM RATINGS
All Pins to GND.........................................................-0.3V to +6V
Input/Output Current (all pins) ............................................20mA
Continuous Power Dissipation (T
A
= +70°C)
10-Pin µMAX (derate 5.6mW/°C above +70°C) ..........444mW
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
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 (MAX6709)
(V
CC
= 2.0V to 5.5V, T
A
= -40°C to +85°C, unless otherwise noted. Typical values are at V
CC
= 5V and T
A
= +25°C.) (Note 1)
PARAMETER
Supply Voltage Range
Supply Current
Input Current
SYMBOL
V
CC
I
CC
I
IN_
V
CC
= 3V
V
CC
= 5V
V
IN_
= input threshold voltage
V
IN_
= 0 to 0.85V (for adjustable threshold)
5.0V (-5%)
5.0V (-10%)
3.3V (-5%)
3.3V (-10%)
Threshold Voltage
V
TH
IN_ decreasing
3.0V (-5%)
3.0V (-10%)
2.5V (-5%)
2.5V (-10%)
1.8V (-5%)
1.8V (-10%)
Adjustable Threshold
Threshold Voltage Temperature
Coefficient
Threshold Hysteresis
V
TH
TCV
TH
V
HYST
V
IN
_ falling at 10mV/µs from
V
TH
to (V
TH
- 50mV)
V
IN
_ rising at 10mV/µs from
V
TH
to (V
TH
+ 50mV)
V
CC
= 5V, I
SINK
= 2mA
Output Low Voltage
V
OL
V
CC
= 2.5V, I
SINK
= 1.2mA
V
CC
= 1V, I
SINK
= 50µA (Note 2)
Output High Voltage
Output High Source Current
V
OH
I
OH
V
CC
≥
2.0V, I
SOURCE
= 6µA (min), PWRGD_
unasserted
V
CC
≥
2.0V, PWRGD_ unasserted
0.8 x V
CC
10
IN_ decreasing
4.50
4.25
3.00
2.85
2.70
2.55
2.25
2.13
1.62
1.53
0.609
4.63
4.38
3.08
2.93
2.78
2.63
2.32
2.19
1.67
1.58
0.623
60
0.3 x V
TH
30
µs
5
0.3
0.3
0.3
V
µA
V
CONDITIONS
MIN
2.0
25
35
25
TYP
MAX
5.5
50
65
40
0.2
4.75
4.50
3.15
3.00
2.85
2.70
2.38
2.25
1.71
1.62
0.635
V
ppm/°C
%
V
UNITS
V
µA
µA
Propagation Delay
t
PD
2
_______________________________________________________________________________________
Low-Voltage, High-Accuracy Quad, Voltage
Monitors in µMAX Package
ELECTRICAL CHARACTERISTICS (MAX6714)
(V
CC
= 2.0V to 5.5V, T
A
= -40°C to +85°C, unless otherwise noted. Typical values are at V
CC
= 5V and T
A
= +25°C.) (Note 1)
PARAMETER
Supply Voltage Range
Supply Current (Note 3)
Power-Fail Input Current
SYMBOL
V
CC
I
CC
I
PFI_
V
CC
= 3V
V
CC
= 5V
V
PFI_
= 0 to 0.85V
MAX6714B (-5%)
V
CC
Reset Threshold
V
TH
V
CC
decreasing
MAX6714A (-10%)
MAX6714D (-5%)
MAX6714C (-10%)
Power-Fail Input Threshold
Threshold Hysteresis
Reset Timeout Period
Reset Delay
V
PFI
V
HYST
t
RP
t
RD
V
CC
falling at 10mV/µs from
(V
TH
+ 100mV) to (V
TH
- 100mV)
V
PFI_
falling at 10mV/µs from V
TH
to
(V
TH
- 50mV)
V
CC
falling at 10mV/µs from
(V
TH
+ 100mV) to (V
TH
- 100mV)
0.7 x V
CC
1
100
t
MRD
MR
to V
CC
V
CC
= 5V, I
SINK
= 2mA
Output Low Voltage
V
OL
V
CC
= 2.5V, I
SINK
= 1.2mA
V
CC
= 1V, I
SINK
= 50µA (Note 2)
Output High Voltage
Output High Source Current
V
OH
I
OH
V
CC
≥
2.0V, I
SOURCE
= 6mA (min),
RESET,
PFO_
unasserted
V
CC
≥
2.0V,
RESET
and
PFO_
unasserted
0.8 x V
CC
10
10
200
20
50
0.3
0.3
0.3
V
µA
V
V
PFI_
decreasing
VPFI_ increasing relative to V
PFI_
decreasing
140
4.50
4.25
3.00
2.85
0.609
4.63
4.38
3.08
2.93
0.623
0.3 x V
TH
210
30
30
µs
5
0.3 x V
CC
V
µs
ns
ns
kΩ
280
CONDITIONS
MIN
2.0
60
80
TYP
MAX
5.5
90
105
0.2
4.75
4.50
3.15
3.00
0.635
V
%
ms
µs
V
UNITS
V
µA
µA
MAX6709/MAX6714
Power-Fail Propagation Delay
t
PFD
MR
Input Voltage
MR
Minimum Input Pulse
MR
Glitch Rejection
MR
to
RESET
Delay
MR
Pullup Resistance
V
IL
V
IH
Note 1:
100% production tested at T
A
= +25°C. Overtemperature limits guaranteed by design.
Note 2:
Condition at V
CC
= 1V is guaranteed only from T
A
= 0°C to +70°C.
Note 3:
Monitored voltage 5V/3.3V is also the device supply. In the typical condition, supply current splits as follows: 25µA for the
resistor-divider, and the rest for other circuitry.
_______________________________________________________________________________________
3
Low-Voltage, High-Accuracy, Quad Voltage
Monitors in µMAX Package
MAX6709/MAX6714
Typical Operating Characteristics
(V
CC
= 5V, T
A
= +25°C, unless otherwise noted.)
SUPPLY CURRENT
vs. SUPPLY VOLTAGE (MAX6709)
MAX6709/14 toc01
SUPPLY CURRENT
vs. SUPPLY VOLTAGE (MAX6714)
MAX6709/14 toc02
NORMALIZED THRESHOLD ERROR
vs. SUPPLY VOLTAGE (MAX6709)
NORMALIZED THRESHOLD ERROR (%)
0.07
0.06
0.05
0.04
0.03
0.02
0.01
0
-0.01
-0.02
NORMALIZED TO V
CC
= 5V
MAX6709/14 toc03
50
45
40
SUPPLY CURRENT (µA)
35
30
25
20
15
10
5
0
T
A
= -40°C
T
A
= +85°C
T
A
= +25°C
100
90
80
SUPPLY CURRENT (µA)
70
60
50
40
30
20
10
0
T
A
= -40°C
T
A
= +25°C
T
A
= +85°C
0.08
0 0.5 1.0 1.5 2.0 2.5 3.0 3.5 4.0 4.5 5.0 5.5
SUPPLY VOLTAGE (V)
0 0.5 1.0 1.5 2.0 2.5 3.0 3.5 4.0 4.5 5.0 5.5
SUPPLY VOLTAGE (V)
2.0
2.5
3.0
3.5
4.0
4.5
5.0
5.5
SUPPLY VOLTAGE (V)
NORMALIZED THRESHOLD
vs. TEMPERATURE (MAX6709)
MAX6709/14 toc04
NORMALIZED PFI_ THRESHOLD
vs. TEMPERATURE (MAX6714)
MAX6709/14 toc05
OUTPUT VOLTAGE LOW
vs. SINK CURRENT
180
OUTPUT VOLTAGE LOW (mV)
160
140
120
100
80
60
40
20
0
T
A
= -40°C
T
A
= +25°C
T
A
= +85°C
MAX6709/14 toc06
0.20
0.15
NORMALIZED THRESHOLD
0.10
0.05
0
-0.05
-0.10
-0.15
-0.20
-40
-15
10
35
60
1.010
1.008
NORMALIZED PFI_ THRESHOLD
1.006
1.004
1.002
1.000
0.998
0.996
0.994
0.992
0.990
V
CC
= 3V OR 5V
200
85
-40
-15
10
35
60
85
0
1
2
3
4
5
6
7
8
9
10
TEMPERATURE (°C)
TEMPERATURE (°C)
SINK CURRENT (mA)
MAXIMUM TRANSIENT DURATION
vs. V
CC
OVERDRIVE (MAX6714)
MAXIMUM TRANSIENT DURATION (µs)
MAXIMUM TRANSIENT DURATION (µs)
120
110
100
90
80
70
60
50
40
30
20
10
0
RESET ASSERTS
ABOVE THIS LINE
MAX6709/14 toc07
MAXIMUM TRANSIENT DURATION
vs. PFI_ OVERDRIVE (MAX6714)
MAX6709/14 toc08
RESET TIMEOUT PERIOD
vs. TEMPERATURE (MAX6714)
MAX6709/14 toc09
90
80
70
60
50
40
30
20
10
0
0
20
RESET TIMEOUT PERIOD (ms)
120
110
100
216
215
214
213
212
211
210
PFO_ ASSERTS
ABOVE THIS LINE
0 100 200 300 400 500 600 700 800 900 1000
V
CC
OVERDRIVE (mV)
40
100
500
1000
-40
-15
10
35
60
85
PFI_ OVERDRIVE (mV)
TEMPERATURE (°C)
4
_______________________________________________________________________________________
Low-Voltage, High-Accuracy Quad, Voltage
Monitors in µMAX Package
Typical Operating Characteristics (continued)
(V
CC
= 5V, T
A
= +25°C, unless otherwise noted.)
PROPAGATION DELAY
(WITH 100mV OVERDRIVE)
MAX6709/14 toc10
MAX6709/MAX6714
PFO_ PULLUP AND PULLDOWN RESPONSE
(C
PFO
_ = 47pF)
MAX6709/14 toc11
IN_ (PFI_)
100mV/div
AC-COUPLED
PFI_
50mV/div
AC-COUPLED
PWRGD_ (PFO_)
2V/div
PFO_
2V/div
10µs/div
10µs/div
RESET TIMEOUT DELAY
MAX6709/14 toc12
MR
2V/div
RESET
2V/div
40ms/div
_______________________________________________________________________________________
5
