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19-2379; Rev 0; 4/02
Low-Voltage, High-Accuracy, Quad Voltage Monitors in MAX 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 threshold voltages and supply tolerances are available to optimize 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-inputimpedance comparator options can be used as adjustable voltage monitors, general-purpose comparators, or digital-level translators. The MAX6709 provides four independent open-drain outputs with 10A internal pullup to VCC. 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 35A (typ) of supply current. The MAX6714 consumes only 60A (typ) of supply current. The MAX6709/MAX6714 operate with supply voltages of 2.0V to 5.5V. An internal undervoltage lockout circuit forces all four digital outputs low when VCC 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 MAX package and operate over the extended (-40C to +85C) 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: 35A MAX6714: 60A o Four Independent, Active-Low, Open-Drain Outputs with 10A Internal Pullup to VCC 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 -40C to +85C o Small 10-Pin MAX Package
MAX6709/MAX6714
Ordering Information
PART MAX6709_UB* TEMP RANGE -40C to +85C PIN-PACKAGE 10 MAX
MAX6714_UB* -40C to +85C 10 MAX *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 VCC 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.
MAX Pin Configurations continued at end of data sheet.
________________________________________________________________ Maxim Integrated Products
1
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Low-Voltage, High-Accuracy, Quad Voltage Monitors in MAX Package MAX6709/MAX6714
ABSOLUTE MAXIMUM RATINGS
All Pins to GND.........................................................-0.3V to +6V Input/Output Current (all pins) ............................................20mA Continuous Power Dissipation (TA = +70C) 10-Pin MAX (derate 5.6mW/C above +70C) ..........444mW Operating Temperature Range ...........................-40C to +85C Storage Temperature Range .............................-65C to +150C Junction Temperature ......................................................+150C Lead Temperature (soldering, 10s) .................................+300C
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)
(VCC = 2.0V to 5.5V, TA = -40C to +85C, unless otherwise noted. Typical values are at VCC = 5V and TA = +25C.) (Note 1)
PARAMETER Supply Voltage Range Supply Current Input Current SYMBOL VCC ICC IIN_ VCC = 3V VCC = 5V VIN_ = input threshold voltage VIN_ = 0 to 0.85V (for adjustable threshold) 5.0V (-5%) 5.0V (-10%) 3.3V (-5%) 3.3V (-10%) Threshold Voltage VTH 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 VTH TCVTH VHYST VIN_ falling at 10mV/s from VTH to (VTH - 50mV) VIN_ rising at 10mV/s from VTH to (VTH + 50mV) VCC = 5V, ISINK = 2mA Output Low Voltage VOL VCC = 2.5V, ISINK = 1.2mA VCC = 1V, ISINK = 50A (Note 2) Output High Voltage Output High Source Current VOH IOH VCC 2.0V, ISOURCE = 6A (min), PWRGD_ unasserted VCC 2.0V, PWRGD_ unasserted 0.8 x VCC 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 VTH 30 s 5 0.3 0.3 0.3 V A 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 A A
Propagation Delay
tPD
2
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Low-Voltage, High-Accuracy Quad, Voltage Monitors in MAX Package
ELECTRICAL CHARACTERISTICS (MAX6714)
(VCC = 2.0V to 5.5V, TA = -40C to +85C, unless otherwise noted. Typical values are at VCC = 5V and TA = +25C.) (Note 1)
PARAMETER Supply Voltage Range Supply Current (Note 3) Power-Fail Input Current SYMBOL VCC ICC IPFI_ VCC = 3V VCC = 5V VPFI_ = 0 to 0.85V MAX6714B (-5%) VCC Reset Threshold VTH VCC decreasing MAX6714A (-10%) MAX6714D (-5%) MAX6714C (-10%) Power-Fail Input Threshold Threshold Hysteresis Reset Timeout Period Reset Delay VPFI VHYST tRP tRD VCC falling at 10mV/s from (VTH + 100mV) to (VTH - 100mV) VPFI_ falling at 10mV/s from VTH to (VTH - 50mV) VCC falling at 10mV/s from (VTH + 100mV) to (VTH - 100mV) 0.7 x VCC 1 100 tMRD MR to VCC VCC = 5V, ISINK = 2mA Output Low Voltage VOL VCC = 2.5V, ISINK = 1.2mA VCC = 1V, ISINK = 50A (Note 2) Output High Voltage Output High Source Current VOH IOH VCC 2.0V, ISOURCE = 6mA (min), RESET, PFO_ unasserted VCC 2.0V, RESET and PFO_ unasserted 0.8 x VCC 10 10 200 20 50 0.3 0.3 0.3 V A V VPFI_ decreasing VPFI_ increasing relative to VPFI_ 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 VTH 210 30 30 s 5 0.3 x VCC V s ns ns k 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 s V UNITS V A A
MAX6709/MAX6714
Power-Fail Propagation Delay
tPFD
MR Input Voltage MR Minimum Input Pulse MR Glitch Rejection MR to RESET Delay MR Pullup Resistance
VIL VIH
Note 1: 100% production tested at TA = +25C. Overtemperature limits guaranteed by design. Note 2: Condition at VCC = 1V is guaranteed only from TA = 0C to +70C. Note 3: Monitored voltage 5V/3.3V is also the device supply. In the typical condition, supply current splits as follows: 25A for the resistor-divider, and the rest for other circuitry.
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Low-Voltage, High-Accuracy, Quad Voltage Monitors in MAX Package MAX6709/MAX6714
Typical Operating Characteristics
(VCC = 5V, TA = +25C, 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 VCC = 5V
MAX6709/14 toc03
50 45 40 SUPPLY CURRENT (A) 35 30 25 20 15 10 5 0 TA = -40C TA = +85C TA = +25C
100 90 80 SUPPLY CURRENT (A) 70 60 50 40 30 20 10 0 TA = -40C TA = +25C TA = +85C
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 TA = -40C TA = +25C TA = +85C
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
VCC = 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. VCC OVERDRIVE (MAX6714)
MAXIMUM TRANSIENT DURATION (s) MAXIMUM TRANSIENT DURATION (s) 110 100 90 80 70 60 50 40 30 20 10 0 0 100 200 300 400 500 600 700 800 900 1000 VCC OVERDRIVE (mV) 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
120
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
40
100
500
1000
-40
-15
10
35
60
85
PFI_ OVERDRIVE (mV)
TEMPERATURE (C)
4
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Low-Voltage, High-Accuracy Quad, Voltage Monitors in MAX Package
Typical Operating Characteristics (continued)
(VCC = 5V, TA = +25C, unless otherwise noted.) PROPAGATION DELAY (WITH 100mV OVERDRIVE)
MAX6709/14 toc10
MAX6709/MAX6714
PFO_ PULLUP AND PULLDOWN RESPONSE (CPFO_ = 47pF)
MAX6709/14 toc11
IN_ (PFI_) 100mV/div AC-COUPLED
PFI_ 50mV/div AC-COUPLED
PWRGD_ (PFO_) 2V/div
PFO_ 2V/div
10s/div
10s/div
RESET TIMEOUT DELAY
MAX6709/14 toc12
MR 2V/div
RESET 2V/div
40ms/div
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Low-Voltage, High-Accuracy, Quad Voltage Monitors in MAX Package MAX6709/MAX6714
Pin Description
PIN MAX6709 1 2 3 4 5 6 7 8 9 MAX6714 -- -- -- -- 5 -- -- -- -- NAME IN1 IN2 IN3 IN4 GND PWRGD4 PWRGD3 PWRGD2 PWRGD1 FUNCTION Input Voltage 1. See Selector Guide for monitored voltages. Input Voltage 2. See Selector Guide for monitored voltages. Input Voltage 3. See Selector Guide for monitored voltages. Input Voltage 4. See Selector Guide for monitored voltages. Ground Output 4. PWRGD4 asserts low when IN4 falls below its threshold voltage. PWRGD4 is open drain with a 10A internal pullup current source to VCC. Output 3. PWRGD3 asserts low when IN3 falls below its threshold voltage. PWRGD3 is open drain with a 10A internal pullup current source to VCC. Output 2. PWRGD2 asserts low when IN2 falls below its threshold voltage. PWRGD2 is open drain with a 10A internal pullup current source to VCC. Output 1. PWRGD1 asserts low when IN1 falls below its threshold voltage. PWRGD1 is open drain with a 10A internal pullup current source to VCC. Power-Supply Input. Connect VCC to a 2.0V to 5.5V supply. An undervoltage lockout circuit forces all PWRGD_ outputs low when VCC drops below the minimum operating voltage. VCC is not a monitored voltage for the MAX6709. For the MAX6714, RESET asserts low when VCC drops below its threshold. Manual Reset Input. Force MR low to assert the RESET output. RESET remains asserted for the reset timeout period after MR goes high. MR is internally pulled up to VCC. Power-Fail Input 1. Input to noninverting input of the power-fail comparator. PFI1 is compared to an internal 0.62V reference. Use an external resistor-divider network to adjust the monitor threshold. Power-Fail Input 2. Input to noninverting input of the power-fail comparator. PFI2 is compared to an internal 0.62V reference. Use an external resistor-divider network to adjust the monitor threshold. Power-Fail Input 3. Input to noninverting input of the power-fail comparator. PFI3 is compared to an internal 0.62V reference. Use an external resistor-divider network to adjust the monitor threshold. Power-Fail Output 3. PFO3 is an active-low, open-drain output with a 10A internal pullup to VCC. PFO3 asserts low when PFI3 is below the selected threshold. Power-Fail Output 2. PFO2 is an active-low, open-drain output with a 10A internal pullup to VCC. PFO2 asserts low when PFI2 is below the selected threshold. Power-Fail Output 1. PFO1 is an active-low, open-drain output with a 10A internal pullup to VCC. PFO1 asserts low when PFI1 is below the selected threshold. Reset Output. RESET is an active-low, open-drain output that asserts low when VCC drops below its preset threshold voltage or when a manual reset is initiated. RESET remains low for the reset timeout period after VCC exceeds the selected reset threshold or MR is released.
10
10
VCC
--
1
MR
--
2
PFI1
--
3
PFI2
--
4
PFI3
-- -- --
6 7 8
PFO3 PFO2 PFO1
--
9
RESET
6
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Low-Voltage, High-Accuracy Quad, Voltage Monitors in MAX Package
Detailed Description
The MAX6709/MAX6714 are low-power, quad voltage monitors designed for multivoltage systems. Preset voltage options for 5.0V, 3.3V, 3.0V, 2.5V, and 1.8V make these quad monitors ideal for applications such as telecommunications, desktop and notebook computers, high-end printers, data storage equipment, and networking equipment. The MAX6709/MAX6714 have an internally trimmed threshold that minimizes or eliminates the need for external components. The four open-drain outputs have weak (10A) internal pullups to VCC, allowing them to interface easily with other logic devices. The weak internal pullups can be overdriven by external pullups to any voltage from 0 to 5.5V. Internal circuitry prevents current flow from the external pullup voltage to VCC. The outputs can be wire-ORed for a single power-good signal. The MAX6709 quad voltage monitor includes an accurate reference, four precision comparators, and a series of internally trimmed resistor-divider networks to set the factory-fixed threshold options. The resistor networks scale the specified IN_ reset voltages to match the internal reference/comparator voltage. Adjustable threshold options bypass the internal resistor networks and connect directly to one of the comparator inputs (an external resistor-divider network is required for threshold matching). The MAX6709 monitors power supplies with either 5% or 10% tolerance specifications, depending on the selected version. Additional high-input-impedance comparator options can be used
MAX6709/MAX6714
VCC
IN1 (ADJ)
PWRGD1
VCC
IN2 (3.3V/3.0V)
PWRGD2
VCC
IN3 (2.5V/1.8V)
PWRGD3
VCC
IN4 (ADJ)
PWRGD4
VCC 0.62V REFERENCE UNDERVOLTAGE LOCKOUT
MAX6709
Figure 1. MAX6709 Functional Diagram _______________________________________________________________________________________ 7
Low-Voltage, High-Accuracy, Quad Voltage Monitors in MAX Package MAX6709/MAX6714
MR VCC
RESET TIMEOUT (200ms) VCC (5.0V/3.3V)
VCC
PFI1 (ADJ)
PFO1
VCC
PFI2 (ADJ)
PFO2
VCC
PFI3 (ADJ) VCC UNDERVOLTAGE LOCKOUT
PFO3
0.62V REFERENCE
MAX6714
Figure 2. MAX6714 Functional Diagram
as an adjustable voltage monitor, general-purpose comparator, or digital-level translator. The MAX6714 quad voltage monitor/reset offers one fixed input with internal timing for P reset, three powerfail comparators, and a manual reset input (MR). RESET asserts low when VCC drops below its threshold or MR is driven low. Each of the three power-fail inputs connects directly to one of the comparator inputs. When any input is higher than the threshold level, the output is high. The output goes low as the input drops below the threshold voltage. The undervoltage lockout circuitry remains active and all outputs remain low with VCC down to 1V (Figures 1 and 2).
Applications Information
Hysteresis
When the voltage on one comparator input is at or near the voltage on another input, ambient noise generally causes the comparator output to oscillate. The most common way to eliminate this problem is through hysteresis. When the two comparator input voltages are equal, hysteresis causes one comparator input voltage to move quickly past the other, thus taking the input out of the region where oscillation occurs. Standard comparators require hysteresis to be added through the use of external resistors. The external resistive network usually provides a positive feedback to the input in order to cause a jump in the threshold voltage when output toggles in one direction or the other. These
8
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Low-Voltage, High-Accuracy Quad, Voltage Monitors in MAX Package MAX6709/MAX6714
5V VCC V1 V2 V3 V4 IN1 IN2 IN3 IN4 PWRGD1 PWRGD2 PWRGD3 PWRGD4 GND IN4 GND PWRGD4 IN2 MAX6709 VIN (5V) IN1 VCC PWRGD1 MAX6709 PWRGD2 D2 D1 5V
D3 IN3 PWRGD3 D4
Figure 3. Quad Undervoltage Detector with LED Indicators
Figure 4. VCC Bar Graph Monitoring
VTH1 = 1 + R2 VREF R1
(
)
5V
PWRGD1
VREF = 0.62V
R2 IN1 R1 IN2
VCC PWRGD1
VTH1
MAX6709 PWRGD2
OUT
PWRGD4 VTH4
INPUT IN3 R4 IN4 R3 VTH4 = 1 + R4 VREF R3 GND PWRGD4 PWRGD3
(
)
OUT VTH
Figure 5. Window Detection
Figure 6. Output Response of Window Detector Circuit
resistors are not required when using the MAX6709/ MAX6714 because hysteresis is built into the device. MAX6709/MAX6714 hysteresis is typically 0.3% of the threshold voltage.
Window Detection
A window detector circuit uses two auxiliary inputs in a configuration such as the one shown in Figure 5. External resistors R1-R4 set the two threshold voltages (VTH1 and VTH4) of the window detector circuit. Window width (VTH) is the difference between the threshold voltages (Figure 6).
Undervoltage Detection Circuit
The open-drain outputs of the MAX6709/MAX6714 can be configured to detect an undervoltage condition. Figure 3 shows a configuration where an LED turns on when the comparator output is low, indicating an undervoltage condition. The MAX6709/MAX6714 can also be used in applications such as system supervisory monitoring, multivoltage level detection, and V CC bar graph monitoring (Figure 4).
Adjustable Input
The MAX6709 offers several monitor options with adjustable reset thresholds. The MAX6714 has three monitored inputs with adjustable thresholds. The threshold voltage at each adjustable IN_ (PFI_) input is typically 0.62V. To monitor a voltage >0.62V, connect a resistordivider network to the circuit as shown in Figure 7. VINTH = 0.62V (R1 + R2) / R2
9
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Low-Voltage, High-Accuracy, Quad Voltage Monitors in MAX Package MAX6709/MAX6714
Or, solved in terms of R1: R1 = R2 ((VINTH / 0.62V) - 1) noisy environment, connecting a 0.1F capacitor from MR to GND provides additional noise immunity.
Reseting the P from a 2nd Voltage (MAX6714)
VINTH
R1
The MAX6714 can be configured to assert a reset from a second voltage by connecting the power-fail output to manual reset. As the VPFI_ falls below its threshold, PFO goes low and asserts the reset output for the reset timeout period after the manual reset input is deasserted. (See Typical Operating Circuit.)
R2
Power-Supply Bypassing and Grounding
The MAX6709/MAX6714 operate from a single 2.0V to 5.5V supply. In noisy applications, bypass VCC with a 0.1F capacitor as close to VCC as possible.
VINTH ( 0.62V- 1) VCC VTH_
VREF = 0.62V R1 = R2
Figure 7. Setting the Auxiliary Monitor
VTH_
Unused Inputs
The unused inputs (except the adjustable) are internally connected to ground through the lower resistors of the threshold-setting resistor pairs. The adjustable input, however, must be connected to ground if unused.
RESET 90% 10% tRD tRP
Reset Output
The MAX6714 RESET output asserts low when V CC drops below its specified threshold or MR asserts low and remains low for the reset timeout period (140ms min) after VCC exceeds its threshold and MR deasserts (Figure 8). The output is open drain with a weak (10A) internal pullup to VCC. For many applications, no external pullup resistor is required to interface with other logic devices. An external pullup resistor to any voltage from 0 to 5.5V overdrives the internal pullup if interfacing to different logic supply voltages (Figure 9). Internal circuitry prevents reverse current flow from the external pullup voltage to VCC.
Figure 8. RESET Output Timing Diagram
VCC = 3.3V
5V
100k VCC VCC
Manual Reset Input
Many P-based products require manual reset capability, allowing the operator, a test technician, or external logic circuitry to initiate a reset. A logic low on MR asserts RESET low. RESET remains asserted while MR is low, and during the reset timeout period (140ms min) after MR returns high. The MR input has an internal 20k pullup resistor to VCC, so it can be left open if unused. Drive MR with TTL or CMOS-logic levels, or with opendrain/collector outputs. Connect a normally open momentary switch from MR to GND to create a manual reset function; external debounce circuitry is not required. If MR is driven from long cables or if the device is used in a
10
RESET RESET
MAX6714 GND GND
Figure 9. Interfacing to Different Logic Supply Voltage
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Low-Voltage, High-Accuracy Quad, Voltage Monitors in MAX Package
Selector Guide (MAX6709)
NOMINAL INPUT VOLTAGE PART IN1 (V) 5 5 5 5 Adj* Adj* 5 5 Adj* Adj* Adj* Adj* Adj* Adj* Adj* IN2 (V) 3.3 3.3 3.3 3.3 3.3 3.3 3.3 3.3 3.3 3.3 3.3 3.3 3 3 Adj* IN3 (V) 2.5 2.5 1.8 1.8 2.5 2.5 Adj* Adj* 2.5 2.5 1.8 1.8 Adj* Adj* Adj* IN4 (V) Adj* Adj* Adj* Adj* 1.8 1.8 Adj* Adj* Adj* Adj* Adj* Adj* Adj* Adj* Adj* SUPPLY TOLERANCE (%) 10 5 10 5 10 5 10 5 10 5 10 5 10 5 N/A
MR 1 PFI1 PFI2 PFI3 GND 2 3 4 5 10 VCC 9 RESET PFO1 PFO2 PFO3
Selector Guide (MAX6714)
NOMINAL INPUT VOLTAGE PART VCC (V) 5 5 3.3 3.3 PFI1 (V) Adj* Adj* Adj* Adj* PFI2 (V) Adj* Adj* Adj* Adj* PFI3 (V) Adj* Adj* Adj* Adj* SUPPLY TOLERANCE (%) 10 5 10 5
MAX6709/MAX6714
MAX6709AUB MAX6709BUB MAX6709CUB MAX6709DUB MAX6709EUB MAX6709FUB MAX6709GUB MAX6709HUB MAX6709IUB MAX6709JUB MAX6709KUB MAX6709LUB MAX6709MUB MAX6709NUB MAX6709OUB
MAX6714AUB MAX6714BUB MAX6714CUB MAX6714DUB
*Adjustable voltage based on 0.62V internal threshold. External threshold voltage can be set using an external resistor-divider.
Pin Configurations (continued)
TOP VIEW
MAX6714
8 7 6
*Adjustable voltage based on 0.62V internal threshold. External threshold voltage can be set using an external resistor-divider.
MAX
Chip Information
TRANSISTOR COUNT: 1029 PROCESS: BiCMOS
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11
Low-Voltage, High-Accuracy, Quad Voltage Monitors in MAX Package MAX6709/MAX6714
Typical Operating Circuit (MAX6709)
2.0V TO 5.5V (MAY BE ONE OF THE MONITORED VOLTAGES) VCC IN1 SUPPLIES TO BE MONITORED IN2 IN3 IN4 GND PWRGD1
MAX6709
PWRGD2 PWRGD3 PWRGD4
SYSTEM LOGIC
P
Typical Operating Circuit (MAX6714)
3.3V SUPPLY
5V SUPPLY VCC VCC 9V SUPPLY PFI1 PFI2 PFI3 VBATT GND RESET MR RESET
MAX6714
PFO1 PFO2 PFO3 I/O I/O
P
12
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Low-Voltage, High-Accuracy, Quad Voltage Monitors in MAX Package MAX6709/MAX6714
Package Information
(The package drawing(s) in this data sheet may not reflect the most current specifications. For the latest package outline information, go to www.maxim-ic.com/packages.)
10LUMAX.EPS Maxim cannot assume responsibility for use of any circuitry other than circuitry entirely embodied in a Maxim product. No circuit patent licenses are implied. Maxim reserves the right to change the circuitry and specifications without notice at any time.
Maxim Integrated Products, 120 San Gabriel Drive, Sunnyvale, CA 94086 408-737-7600 ____________________ 13 (c) 2002 Maxim Integrated Products Printed USA is a registered trademark of Maxim Integrated Products.

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