MAX6351UVUT-T Maxim Integrated, MAX6351UVUT-T Datasheet

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MAX6351UVUT-T

Manufacturer Part Number
MAX6351UVUT-T
Description
Supervisory Circuits
Manufacturer
Maxim Integrated
Series
MAX6351, MAX6352, MAX6353, MAX6354, MAX6355, MAX6356, MAX6357, MAX6358, MAX6359, MAX6360r
Datasheet

Specifications of MAX6351UVUT-T

Number Of Voltages Monitored
2
Monitored Voltage
1.8 V, 2.5 V, 3 V, 3.3 V, 5 V
Undervoltage Threshold
2.74 V, 1.55 V
Overvoltage Threshold
1.61 V, 2.82 V
Output Type
Active Low, Push-Pull
Manual Reset
Resettable
Watchdog
No Watchdog
Battery Backup Switching
No Backup
Power-up Reset Delay (typ)
280 ms
Supply Voltage - Max
5.5 V
Maximum Operating Temperature
+ 85 C
Mounting Style
SMD/SMT
Package / Case
SOT-23
Chip Enable Signals
No
Maximum Power Dissipation
695 mW
Minimum Operating Temperature
- 40 C
Power Fail Detection
No
Supply Current (typ)
20 uA
Supply Voltage - Min
1 V
The MAX6351–MAX6360 microprocessor (µP) supervi-
sors with multiple reset voltages significantly improve sys-
tem reliability and accuracy compared to separate ICs or
discrete components. If any input supply voltage drops
below its associated preset threshold, all reset outputs
are asserted. In addition, the outputs are valid as long as
either input supply voltage remains greater than +1.0V.
All devices in this series have an active-low debounced
manual reset input. In addition, the MAX6358/MAX6359/
MAX6360 offer a watchdog-timer input with a 46.4s start-
up timeout period and a 2.9s timeout period. The
MAX6355/MAX6356/MAX6357 offer an additional voltage
monitor input to monitor a third voltage.
The MAX6351 features two active-low, push-pull reset
outputs, one is referenced to V
enced to V
an active-low, push-pull reset output referenced to V
The MAX6354/MAX6357/MAX6360 offer an active-low,
push-pull reset output referenced to V
All these devices are offered with a wide variety of voltage
threshold levels, as shown in the Voltage Threshold
Levels table. They are available in 5- and 6-pin SOT23
packages and operate over the extended (-40°C to
+85°C) temperature range.
Note: Standard versions are shown in bold. Sample stock is gen-
erally held on the standard versions only. Contact factory for avail-
ability.
19-1508; Rev 6; 12/05
__________Voltage Threshold Levels
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.
PART NO.
SUFFIX
(_ _)
TW
UW
RW
MS
MR
SW
LS
MT
SY
SV
UV
RV
LR
TZ
TY
TV
SZ
LT
CC
2. The MAX6353/MAX6356/MAX6359 offer
________________________________________________________________ Maxim Integrated Products
THRESHOLD (V)
V
CC
VOLTAGE
1 NOMINAL
General Description
4.63
4.63
4.63
4.38
4.38
4.38
3.08
3.08
3.08
3.08
2.93
2.93
2.93
2.93
2.78
2.78
2.63
2.63
CC
1 and the other is refer-
CC
THRESHOLD (V)
V
2.
CC
VOLTAGE
2 NOMINAL
3.08
2.93
2.63
3.08
2.93
2.63
2.32
2.19
1.67
1.58
2.32
2.19
1.67
1.58
1.67
1.58
1.67
1.58
CC
1.
µP Supervisory Circuits
♦ Precision Monitoring of Multiple +1.8V, +2.5V,
♦ Precision Factory-Set Power-Supply
♦ 20µA Supply Current
♦ 100ms min Power-On Reset Pulse Width
♦ Debounced TTL/CMOS-Compatible
♦ Watchdog Timer
♦ Fully Guaranteed Over Temperature
♦ Guaranteed RESET Valid to V
♦ Power-Supply Transient Immunity
♦ No External Components for Dual-Voltage
♦ Small 5- and 6-Pin SOT23 Packages
♦ Low Cost
*The _ _ are placeholders for the threshold voltage levels of the
devices. Substitute the part number suffix in the Voltage Thres-
hold Levels table for the desired voltage level. All devices are
available in tape-and-reel only. There is a 2500 piece minimum
order increment for the SOT package.
Devices are available in both leaded and lead-free packaging.
Specify lead-free by replacing “-T” with “+T” when ordering.
Pin Configurations appear at end of data sheet.
Selector Guide appears at end of data sheet.
MAX6351_ _UT-T
MAX6352_ _UK-T
MAX6353_ _UK-T
MAX6354_ _UK-T
MAX6355_ _UT-T
MAX6356_ _UT-T
MAX6357_ _UT-T
MAX6358_ _UT-T
MAX6359_ _UT-T
MAX6360_ _UT-T
Portable/Battery-Powered
Equipment
Computers
Controllers
+3.0V, +3.3V, and +5V Power-Supply Voltages
Reset Thresholds
Manual-Reset Input
V
Systems
CC
46.4s Startup Timeout
2.9s Normal Timeout
PART*
2 = 1V
Dual/Triple-Voltage
TEMP RANGE
-40°C to +85°C
-40°C to +85°C
-40°C to +85°C
-40°C to +85°C
-40°C to +85°C
-40°C to +85°C
-40°C to +85°C
-40°C to +85°C
-40°C to +85°C
-40°C to +85°C
Ordering Information
Intelligent Instruments
Multivoltage Systems
CC
Applications
1 = 1V or
PIN-PACKAGE
6 SOT23-6
5 SOT23-5
5 SOT23-5
5 SOT23-5
6 SOT23-6
6 SOT23-6
6 SOT23-6
6 SOT23-6
6 SOT23-6
6 SOT23-6
Features
1

Related parts for MAX6351UVUT-T

MAX6351UVUT-T Summary of contents

Page 1

... Note: Standard versions are shown in bold. Sample stock is gen- erally held on the standard versions only. Contact factory for avail- ability. ________________________________________________________________ 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. ...

Page 2

... Dual/Triple-Voltage µP Supervisory Circuits ABSOLUTE MAXIMUM RATINGS GND .................................................-0. RST (MAX6352/MAX6355/MAX6358)...................... -0.3V to +6V RST, MR, WDI, RST1, RSTIN (MAX6351/MAX6353/ MAX6356/MAX6359) ..............................-0. RST, RST2 (MAX6351/MAX6354/ MAX6357/MAX6360) ..............................-0. 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 ...

Page 3

... RESET Output Voltage High (MAX6351/MAX6353/MAX6354/ MAX6356/MAX6357/MAX6359/ MAX6360 only) WATCHDOG INPUT (MAX6358/MAX6359/MAX6360) Watchdog Timeout Period WDI Pulse Width (Note 4) WDI Input Voltage (Note 5) WDI Input Current (Note 6) MANUAL RESET INPUT MR Input Voltage _______________________________________________________________________________________ µP Supervisory Circuits CONDITIONS /°C TH 100mV overdrive > > ...

Page 4

... Dual/Triple-Voltage µP Supervisory Circuits ELECTRICAL CHARACTERISTICS (continued +1.2V to +5.5V -40°C to +85°C, unless otherwise noted. Typical values are PARAMETER SYMBOL MR Pullup Resistance MR Minimum Pulse Width MR Glitch Rejection MR to Reset Delay ADJUSTABLE RESET COMPARATOR INPUT (MAX6355/MAX6356/MAX6357) RSTIN Input Threshold ...

Page 5

... TEMPERATURE (°C) PULLUP CHARACTERISTICS RST1 PUSH-PULL OUTPUT OPEN-DRAIN OUTPUT RST2 PUSH-PULL OUTPUT 400ns/div _______________________________________________________________________________________ µP Supervisory Circuits Typical Operating Characteristics (continued) MAXIMUM V TRANSIENT DURATION CC vs. RESET THRESHOLD OVERDRIVE 300 RESET OCCURS ABOVE LINE 250 200 150 100 50 0 100 ...

Page 6

... Dual/Triple-Voltage µP Supervisory Circuits PIN MAX6352 MAX6355 MAX6351 MAX6353 MAX6356 MAX6354 MAX6357 1 — — — — — — — 5 — — — _______________________________________________________________________________________ MAX6358 NAME MAX6359 MAX6360 RST1 — Active-Low, CMOS Reset Output Referenced to V Active-Low Reset Output ...

Page 7

... FOR THE MAX6355/MAX6356/MAX6357, WDI FOR THE MAX6358/ MAX6359/MAX6360, AND V 1 FOR THE MAX6352/MAX6353/MAX6354. CC Figure 1. Functional Diagram _______________________________________________________________________________________ µP Supervisory Circuits The MAX6351 provides two active-low, push-pull reset Supply Voltages outputs, one corresponding to each of its two moni- tored voltages. The MAX6353/MAX6356/MAX6359 have an active-low, push-pull reset output that is referenced ...

Page 8

... Dual/Triple-Voltage µP Supervisory Circuits During the normal operating mode, the supervisor will issue a reset pulse for the reset timeout period (140ms min) if the µP does not update the WDI with a valid tran- sition (HIGH to LOW or LOW to HIGH) within the stan- dard timeout period (1.6s min). ...

Page 9

... CC SOT23-6 NUMBER OF PIN PART SUPPLIES COUNT MONITORED MAX6351 6 MAX6352 5 MAX6353 5 MAX6354 5 MAX6355 6 MAX6356 6 MAX6357 6 MAX6358 6 MAX6359 6 MAX6360 6 _______________________________________________________________________________________ µP Supervisory Circuits TOP VIEW RST* 1 GND RST* 1 GND RST1 RST2 ✔ ✔ — — ✔ 2 — ✔ ...

Page 10

... Dual/Triple-Voltage µP Supervisory Circuits (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.) 10 ______________________________________________________________________________________ Package Information PACKAGE OUTLINE, SOT 6L BODY 1 21-0058 G 1 ...

Page 11

... 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. 11 ____________________Maxim Integrated Products, 120 San Gabriel Drive, Sunnyvale, CA 94086 408-737-7600 © 2005 Maxim Integrated Products Dual/Triple-Voltage µ ...

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