MAX706APEPA+ Maxim Integrated Products, MAX706APEPA+ Datasheet

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MAX706APEPA+

Manufacturer Part Number
MAX706APEPA+
Description
IC SUPERVISOR LOW COST 8PDIP
Manufacturer
Maxim Integrated Products
Type
Simple Reset/Power-On Resetr
Datasheet

Specifications of MAX706APEPA+

Number Of Voltages Monitored
1
Output
Push-Pull, Totem Pole
Reset
Active High
Reset Timeout
140 ms Minimum
Voltage - Threshold
2.63V
Operating Temperature
-40°C ~ 85°C
Mounting Type
Through Hole
Package / Case
14-DIP (0.300", 7.62mm)
Mounting Style
Through Hole
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
The MAX706P/R/S/T, MAX706AP/AR/AS/AT, and
MAX708R/S/T microprocessor (µP) supervisory circuits
reduce the complexity and number of components
required to monitor +3V power-supply levels in +3V to
+5V µP systems. These devices significantly improve
system reliability and accuracy compared to separate
ICs or discrete components.
The MAX706P/R/S/T and MAX706AP/AR/AS/AT supervi-
sory circuits provide the following four functions:
1) A reset output during power-up, power-down, and
2) An independent watchdog output that goes low if the
3) A 1.25V threshold detector for power-fail warning,
4) An active-low, manual-reset input.
The only difference between the MAX706R/AR,
MAX706S/AS, and MAX706T/AT is the reset-threshold
voltage levels, which are 2.63V, 2.93V, and 3.08V,
respectively. All have active-low reset output signals.
The MAX706P/AP are identical to the MAX706R/AR,
except the reset output signal is active-high. The watch-
dog timer function for the MAX706AP/AR/AS/AT dis-
ables when the WDI input is left open or connected to a
high-impedance state of a low-leakage tri-state output.
The MAX708R/S/T provide the same functions as the
MAX706R/S/T and MAX706AR/AS/AT except they do
not have a watchdog timer. Instead, they provide both
RESET and RESET outputs. As with the MAX706,
devices with R, S, and T suffixes have reset thresholds
of 2.63V, 2.93V, and 3.08V, respectively.
These devices are available in 8-pin SO, DIP, and
µMAX
ating temperature range.
19-0099; Rev 5; 4/06
µMAX is a registered trademark of Maxim Integrated Products, Inc.
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.
brownout conditions.
watchdog input has not been toggled within 1.6s.
low-battery detection, or for monitoring a power
supply other than the main supply.
®
Battery-Powered Equipment
Portable Instruments
Computers
Controllers
Intelligent Instruments
Critical µP Power Monitoring
packages and are fully specified over the oper-
________________________________________________________________ Maxim Integrated Products
General Description
+3V Voltage Monitoring, Low-Cost µP
Applications
o µMAX Package, Small 8-Pin SO
o Precision Supply-Voltage Monitors
o 200ms Reset Time Delay
o Debounced TTL/CMOS-Compatible Manual Reset
o 100µA Quiescent Current
o WDI Disable Feature (MAX706AP/AR/AS/AT)
o Watchdog Timer: 1.6s Timeout
o Reset Output Signal:
o Voltage Monitor for Power-Fail or Low-Battery
o 8-Pin Surface-Mount Package
o Guaranteed RESET Assertion to V
Ordering Information continued at end of data sheet.
Pin Configurations appear at end of data sheet.
MAX706PCPA
MAX706PCUA
SO, µMAX, and PDIP packages are available in lead-free.
MAX706PCSA
MAX706PEPA
Input
Warning
Typical Operating Circuits continued at end of data sheet.
UNREGULATED
2.63V (MAX706P/R, MAX706AP/AR, and MAX708R)
2.93V (MAX706S, MAX706AS, and MAX708S)
3.08V (MAX706T, MAX706AT, and MAX708T)
Active-High Only (MAX706P, MAX706AP)
Active-Low Only (MAX706R/S/T, MAX706AR/AS/AT)
Active-High and Active-Low (MAX708R/S/T)
PART†
Supervisory Circuits
DC
PUSHBUTTON
SWITCH
Typical Operating Circuits
MAX639
-40°C to +85°C
0°C to +70°C
0°C to +70°C
0°C to +70°C
RANGE
TEMP
Ordering Information
V
PFI
MR
CC
DC-DC
CONVERTER
+3V/+3.3V
MAX706AR/AS/AT
MAX706R/S/T
GND
RESET
PIN-
PACKAGE
8 PDIP
8 SO
8 µMAX
8 PDIP
WDO
WDI
PFO
CC
Features
= 1V
V
RESET
I/O LINE
NMI
INTERRUPT
CC
µP
CODE
PKG
P8-1
S8-2
U8-1
P8-1
1

Related parts for MAX706APEPA+

MAX706APEPA+ Summary of contents

Page 1

... Portable Instruments Computers Controllers Intelligent Instruments Critical µP Power Monitoring µMAX is a registered trademark of Maxim Integrated Products, Inc. ________________________________________________________________ Maxim Integrated Products 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. Supervisory Circuits o µMAX Package, Small 8-Pin SO o Precision Supply-Voltage Monitors 2 ...

Page 2

Voltage Monitoring, Low-Cost µP Supervisory Circuits ABSOLUTE MAXIMUM RATINGS Terminal Voltage (with respect to GND) V ........................................................................-0.3V to +6V CC All Other Inputs (Note 1)..........................-0. Input Current V ..................................................................................20mA CC GND .................................................................................20mA Output Current (all outputs) ................................................20mA ...

Page 3

Voltage Monitoring, Low-Cost µP ELECTRICAL CHARACTERISTICS (continued) (MAX70_P/R, MAX706AP/AR 2.7V to 5.5V; MAX70_S, MAX706AS 5.5V unless otherwise noted. Typical values are MIN MAX ...

Page 4

Voltage Monitoring, Low-Cost µP Supervisory Circuits ELECTRICAL CHARACTERISTICS (continued) (MAX70_P/R, MAX706AP/AR 2.7V to 5.5V; MAX70_S, MAX706AS 5.5V unless otherwise noted. Typical values are ...

Page 5

Voltage Monitoring, Low-Cost µ +25°C, unless otherwise noted.) A _______________________________________________________________________________________ Supervisory Circuits Typical Operating Characteristics Typical Operating Characteristics 5 ...

Page 6

Voltage Monitoring, Low-Cost µP Supervisory Circuits MAX706P MAX706R/S/T, MAX706AP MAX706AR/AS/AT SO/DIP µMAX SO/DIP µMAX ...

Page 7

Voltage Monitoring, Low-Cost µP WATCHDOG 6 WATCHDOG WDI TRANSITION TIMER DETECTOR V CC TIMEBASE FOR RESET AND 70µA WATCHDOG 1 MR RESET 2 GENERATOR V CC 2.63V MAX706P/R 2.93V MAX706S MAX706P/R/S/T 3.08V MAX706T MAX706AP/AR/AS/AT 4 PFI 1.25V 3 GND ...

Page 8

Voltage Monitoring, Low-Cost µP Supervisory Circuits +3. RST RST CC +1V t RST RESET 0V +3.3V RESET 0V +3.3V MR* 0V +3.3V *NOTE: MR EXTERNALLY DRIVEN LOW. WDO* WDO TIMING SHOWN FOR MAX706P/R/S/T. 0V Figure 3. ...

Page 9

Voltage Monitoring, Low-Cost µP To build an early-warning power-failure circuit, use the power-fail comparator input (PFI) to monitor the unregu- lated DC supply voltage (see the Typical Operating Circuits ). Connect the PFI to a resistive-divider network such that ...

Page 10

Voltage Monitoring, Low-Cost µP Supervisory Circuits sees 1.25V when V falls to the desired trip point Resistor R3 adds hysteresis. R3 will typically TRIP be an order of magnitude greater than R1 and R2. The current ...

Page 11

Voltage Monitoring, Low-Cost µP Pin Configurations TOP VIEW MAX706P 3 GND 6 MAX706AP PFI 4 5 DIP/ MAX706R/S/T 3 GND 6 MAX706AR/AS/AT 4 PFI 5 ...

Page 12

Voltage Monitoring, Low-Cost µP Supervisory Circuits (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.) 12 ______________________________________________________________________________________ Package Information ...

Page 13

Voltage Monitoring, Low-Cost µP (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.) ______________________________________________________________________________________ Supervisory Circuits Package Information (continued) α α 13 ...

Page 14

Voltage Monitoring, Low-Cost µP Supervisory Circuits (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.) 14 ______________________________________________________________________________________ Package Information (continued) ...

Page 15

... 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 ____________________ 15 © 2006 Maxim Integrated Products ...

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