MAX6302CSA Maxim Integrated Products, MAX6302CSA Datasheet

IC CIRCUIT SUPERVISORY LP 8-SOIC

MAX6302CSA

Manufacturer Part Number
MAX6302CSA
Description
IC CIRCUIT SUPERVISORY LP 8-SOIC
Manufacturer
Maxim Integrated Products
Type
Simple Reset/Power-On Resetr
Datasheet

Specifications of MAX6302CSA

Number Of Voltages Monitored
1
Output
Open Drain or Open Collector
Reset
Active High
Reset Timeout
2.8 ms Minimum
Voltage - Threshold
Adjustable/Selectable
Operating Temperature
0°C ~ 70°C
Mounting Type
Surface Mount
Package / Case
8-SOIC (3.9mm Width)
Lead Free Status / RoHS Status
Contains lead / RoHS non-compliant

Available stocks

Company
Part Number
Manufacturer
Quantity
Price
Part Number:
MAX6302CSA
Manufacturer:
TI
Quantity:
170
Part Number:
MAX6302CSA
Manufacturer:
MAXIM/美信
Quantity:
20 000
The MAX6301–MAX6304* low-power microprocessor
(µP) supervisory circuits provide maximum adjustability
for reset and watchdog functions. The reset threshold
can be adjusted to any voltage above 1.22V, using
external resistors. In addition, the reset and watchdog
timeout periods are adjustable using external capaci-
tors. A watchdog select pin extends the watchdog time-
out period to 500x. The reset function features immunity
to power-supply transients.
These four devices differ only in the structure of their reset
outputs (see the Selector Guide ). The MAX6301–MAX6304
are available in the space-saving 8-pin µMAX
as well as 8-pin PDIP and SO packages.
19-1078; Rev 4; 9/10
µMAX is a registered trademark of Maxim Integrated Products, Inc.
For pricing, delivery, and ordering information, please contact Maxim Direct at 1-888-629-4642,
or visit Maxim’s website at www.maxim-ic.com.
Acti ve-Low
Reset
Acti ve-H i g h
Reset
Op en- D rai n
Reset Outp ut
P ush- P ul l
Reset Outp ut
P i n- P ackag e
_______________General Description
FEATURE
Medical Equipment
Intelligent Instruments
Portable Equipment
Battery-Powered
Computers/Controllers
TOP VIEW
( ) ARE FOR MAX6302/MAX6304.
8- PD IP /S O/
MAX6301
RESET IN
µM AX
GND
SWT
SRT
________________________________________________________________ Maxim Integrated Products
+5V, Low-Power µP Supervisory Circuits
1
2
3
4
DIP/SO/µMAX
8- PD IP /S O/
MAX6302
MAX6301
MAX6302
MAX6303
MAX6304
µM AX
Embedded Controllers
Critical µP Monitoring
Set-Top Boxes
Computers
Pin Configuration
Selector Guide
8- PD IP /S O/
MAX6303
Applications
8
7
6
5
µM AX
with Adjustable Reset/Watchdog
V
RESET (RESET)
WDI
WDS
CC
®
8- PD IP /S O/
MAX6304
package,
µM AX
o Adjustable Reset Threshold
o Adjustable Reset Timeout
o Adjustable Watchdog Timeout
o 500x Watchdog Timeout Multiplier
o 4µA Supply Current
o RESET or RESET Output Options
o Push-Pull or Open-Drain Output Options
o Guaranteed RESET Asserted At or Above
o Power-Supply Transient Immunity
o Watchdog Function can be Disabled
o PDIP/SO/µMAX Packages Available
Ordering Information continued at end of data sheet.
____________________________Features
Devices are available in both leaded and lead(Pb)-free/RoHS-
compliant packaging. Specify lead-free by adding the “+ ”
symbol at the end of the part number when ordering.
MAX6301CPA
MAX6301CSA
MAX6301CUA
MAX6301EPA
MAX6301ESA
V
V
CC
IN
C
R1
R2
SRT
PART
= 1V (MAX6301/MAX6303)
1
2
3
4
C
( ) ARE FOR MAX6302/MAX6304.
SWT
RESET IN
GND
SRT
SWT
Typical Operating Circuit
MAX6301
MAX6302
MAX6303
MAX6304
-40°C to +85°C
-40°C to +85°C
TEMP RANGE
(RESET)
0°C to +70°C
0°C to +70°C
0°C to +70°C
Ordering Information
RESET
WDS
WDI
V
CC
8
7
6
5
0.1µF
WDS = 0 FOR NORMAL MODE
WDS = 1 FOR EXTENDED MODE
R
L
MAX6301
ONLY
MAX6302
ONLY
R
L
PIN-PACKAGE
8 PDIP
8 SO
8 µMAX
8 PDIP
8 SO
RESET
I/O
µP
1

Related parts for MAX6302CSA

MAX6302CSA Summary of contents

Page 1

... MAX6303 MAX6304 SWT 4 DIP/SO/µMAX ( ) ARE FOR MAX6302/MAX6304. µMAX is a registered trademark of Maxim Integrated Products, Inc. ________________________________________________________________ Maxim Integrated Products For pricing, delivery, and ordering information, please contact Maxim Direct at 1-888-629-4642, or visit Maxim’s website at www.maxim-ic.com. with Adjustable Reset/Watchdog ____________________________Features o Adjustable Reset Threshold ...

Page 2

Low-Power µP Supervisory Circuits with Adjustable Reset/Watchdog ABSOLUTE MAXIMUM RATINGS V CC .................................................................................... RESET IN, SWT, SRT ..................................-0. WDI, WDS..............................................................-0.3V to +7.0V RESET, RESET MAX6301… .......................................................-0.3V to +7.0V MAX6302/MAX6303/MAX6304...............-0. Input Current V ...............................................................................±20mA CC GND..............................................................................±20mA ...

Page 3

Low-Power µP Supervisory Circuits ELECTRICAL CHARACTERISTICS (continued +2V to +5.5V MIN MAX PARAMETER SYMBOL WATCHDOG TIMER WDI, WDS Input Threshold WDI Pulse Width WDI, WDS Leakage Current WDI Sink/Source Current ...

Page 4

Low-Power µP Supervisory Circuits with Adjustable Reset/Watchdog ____________________________Typical Operating Characteristics (continued 1500pF +25°C, unless otherwise noted.) SWT SRT A SUPPLY CURRENT vs. SUPPLY VOLTAGE 4.2 RESET DEASSERTED 4.0 NO LOAD 3.8 3.6 3.4 ...

Page 5

Low-Power µP Supervisory Circuits with Adjustable Reset/Watchdog PIN NAME Reset Input. High-impedance input to the reset comparator. Connect this pin to the center point RESET IN external resistor voltage-divider network to set the reset threshold voltage. ...

Page 6

Low-Power µP Supervisory Circuits with Adjustable Reset/Watchdog Detailed Description Reset Function/Output The reset output is typically connected to the reset input of a µP. A µP’s reset input starts or restarts the µ known state. The MAX6301–MAX6304 ...

Page 7

Low-Power µP Supervisory Circuits V CC WDI RESET 0V NORMAL MODE (WDS = GND) Figure 2a. Watchdog Timing Diagram, WDS = GND V CC WDI RESET 0V EXTENDED MODE (WDS = V ) ...

Page 8

Low-Power µP Supervisory Circuits with Adjustable Reset/Watchdog RESET MAX6301 MAX6302 MAX6303 MAX6304 Figure 4. Monitoring Votlages Other than V with and t in µs. C SRT RP SRT age ...

Page 9

Low-Power µP Supervisory Circuits V CC MAX6301 V CC 0.1µF 4.7kΩ GND RESET Figure 7. Interfacing to µPs with Bidirectional Reset I/O Pins Interfacing to µPs with Bidirectional Reset Pins Since RESET is open-drain, the MAX6301 interfaces easily with ...

Page 10

Low-Power µP Supervisory Circuits with Adjustable Reset/Watchdog V CC MAX6303 V CC RESET GND Figure 9. Ensuring RESET Valid those applications where RESET must be valid down to 0V, adding a pulldown resistor between RESET ...

Page 11

... Low-Power µP Supervisory Circuits Ordering Information (continued) PART TEMP RANGE MAX6302CPA 0°C to +70°C MAX6302CSA 0°C to +70°C MAX6302CUA 0°C to +70°C MAX6302EPA -40°C to +85°C MAX6302ESA -40°C to +85°C MAX6303CPA 0°C to +70°C MAX6303CSA 0°C to +70°C MAX6303CUA 0°C to +70°C MAX6303EPA -40° ...

Page 12

... 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. 12 ____________________Maxim Integrated Products, 120 San Gabriel Drive, Sunnyvale, CA 94086 408-737-7600 © 2010 Maxim Integrated Products DESCRIPTION Maxim is a registered trademark of Maxim Integrated Products, Inc ...

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