MAX6714 MAXIM [Maxim Integrated Products], MAX6714 Datasheet

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MAX6714

Manufacturer Part Number
MAX6714
Description
Low-Voltage, High-Accuracy, Quad Voltage Monitors in ?MAX Package
Manufacturer
MAXIM [Maxim Integrated Products]
Datasheet

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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
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
drops below the minimum operating voltage. The four
digital outputs have weak internal pullups to V
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.
19-2379; Rev 0; 4/02
Typical Operating Circuits appear at end of data sheet.
Selector Guides appear at end of data sheet.
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.
Telecommunications
Servers
High-End Printers
Desktop and Notebook Computers
Data Storage Equipment
Networking Equipment
Multivoltage Systems
Low-Voltage, High-Accuracy, Quad Voltage
________________________________________________________________ Maxim Integrated Products
General Description
Applications
CC
. The MAX6714
Monitors in µMAX Package
CC
CC
,
o Monitor Four Power-Supply Voltages
o Precision Factory-Set Threshold Options for 5.0V,
o Adjustable Voltage Threshold Monitors Down to
o High-Accuracy (±2.0%) Adjustable Threshold
o Low Supply Current
o Four Independent, Active-Low, Open-Drain
o 140ms (min) Reset Timeout Period
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
*Insert the desired letter from the Selector Guide into the blank
to complete the part number.
Pin Configurations continued at end of data sheet.
MAX6709_UB*
MAX6714_UB*
3.3V, 3.0V, 2.5V, and 1.8V (Nominal) Supplies
0.62V
Inputs
Outputs with 10µA Internal Pullup to V
(MAX6714 only)
TOP VIEW
MAX6709: 35µA
MAX6714: 60µA
PART
GND
IN1
IN2
IN3
IN4
1
2
3
4
5
Ordering Information
-40°C to +85°C
-40°C to +85°C
TEMP RANGE
MAX6709
Pin Configurations
µMAX
10
9
8
7
6
V
PWRGD1
PWRGD2
PWRGD3
PWRGD4
PIN-PACKAGE
10 µMAX
10 µMAX
CC
Features
CC
1

Related parts for MAX6714

MAX6714 Summary of contents

Page 1

... 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 drops below the minimum operating voltage ...

Page 2

Low-Voltage, High-Accuracy, Quad Voltage Monitors in µMAX Package ABSOLUTE MAXIMUM RATINGS All Pins to GND.........................................................-0.3V to +6V Input/Output Current (all pins) ............................................20mA Continuous Power Dissipation (T = +70°C) A 10-Pin µMAX (derate 5.6mW/°C above +70°C) ..........444mW Stresses beyond those listed ...

Page 3

... Low-Voltage, High-Accuracy Quad, Voltage ELECTRICAL CHARACTERISTICS (MAX6714 2.0V to 5.5V -40°C to +85°C, unless otherwise noted. Typical values are PARAMETER SYMBOL Supply Voltage Range Supply Current (Note 3) Power-Fail Input Current V Reset Threshold CC Power-Fail Input Threshold Threshold Hysteresis V Reset Timeout Period ...

Page 4

... 1.008 1.006 1.004 1.002 1.000 0.998 0.996 0.994 0.992 0.990 -40 - TEMPERATURE (°C) MAXIMUM TRANSIENT DURATION vs. PFI_ OVERDRIVE (MAX6714) 120 110 100 PFO_ ASSERTS 50 ABOVE THIS LINE 100 500 1000 ...

Page 5

Low-Voltage, High-Accuracy Quad, Voltage ( +25°C, unless otherwise noted PROPAGATION DELAY (WITH 100mV OVERDRIVE) 10µs/div _______________________________________________________________________________________ Monitors in µMAX Package Typical Operating Characteristics (continued) PFO_ PULLUP AND PULLDOWN RESPONSE MAX6709/14 toc10 IN_ (PFI_) 100mV/div ...

Page 6

... Power-Supply Input. Connect V forces all PWRGD_ outputs low when not a monitored voltage for the MAX6709. For the MAX6714, RESET asserts low when V drops below its threshold. Manual Reset Input. Force MR low to assert the RESET output. RESET remains asserted for MR — 1 the reset timeout period after MR goes high ...

Page 7

... The MAX6709/MAX6714 have an internally trimmed threshold that minimizes or eliminates the need for external components. The four open-drain outputs have weak (10µA) internal pullups to V interface easily with other logic devices ...

Page 8

... 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 µP reset, three power- fail comparators, and a manual reset input (MR). RESET drops below its threshold ...

Page 9

... 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 applica- tions such as system supervisory monitoring, multivolt- age level detection, and V bar graph monitoring CC (Figure 4) ...

Page 10

... MR to GND provides additional noise immunity. Reseting the µP from a 2nd Voltage The MAX6714 can be configured to assert a reset from a second voltage by connecting the power-fail output to manual reset. As the V goes low and asserts the reset output for the reset time- out period after the manual reset input is deasserted ...

Page 11

... Adj* 10 Pin Configurations (continued) Adj* 5 Adj* 10 TOP VIEW Adj* 5 Adj* 10 Adj* 5 Adj* 10 Adj* 5 Adj* N/A Selector Guide (MAX6714) NOMINAL INPUT VOLTAGE SUPPLY V PFI1 PFI2 PFI3 CC TOLERANCE (V) (V) (V) (V) 5 Adj* Adj* Adj* 5 Adj* Adj* Adj* 3.3 Adj* ...

Page 12

... Typical Operating Circuit (MAX6709) 2.0V TO 5.5V (MAY BE ONE OF THE MONITORED VOLTAGES IN1 PWRGD1 MAX6709 IN2 PWRGD2 SYSTEM LOGIC IN3 PWRGD3 IN4 PWRGD4 GND Typical Operating Circuit (MAX6714) 3.3V SUPPLY V RESET CC PFI1 MR MAX6714 PFI2 PFO1 PFI3 PFO2 PFO3 GND µ RESET µP ...

Page 13

Low-Voltage, High-Accuracy, Quad Voltage (The package drawing(s) in this data sheet may not reflect the most current specifications. For the latest package outline information www.maxim-ic.com/packages.) Maxim cannot assume responsibility for use of any circuitry other than circuitry entirely ...

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