MAX6351LTUT+T Maxim Integrated Products, MAX6351LTUT+T Datasheet

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MAX6351LTUT+T

Manufacturer Part Number
MAX6351LTUT+T
Description
IC SUPERVISOR MPU SOT23-6
Manufacturer
Maxim Integrated Products
Type
Multi-Voltage Supervisorr
Datasheet

Specifications of MAX6351LTUT+T

Number Of Voltages Monitored
2
Output
Push-Pull, Totem Pole
Reset
Active Low
Reset Timeout
100 ms Minimum
Voltage - Threshold
3.08V, 4.63V
Operating Temperature
-40°C ~ 85°C
Mounting Type
Surface Mount
Package / Case
SOT-23-6
Monitored Voltage
1.8 V, 2.5 V, 3 V, 3.3 V, 5 V
Undervoltage Threshold
4.54 V, 3.03 V
Overvoltage Threshold
3.14 V, 4.72 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
Supply Voltage (min)
1 V
Supply Current (typ)
20 uA
Maximum Power Dissipation
695 mW
Maximum Operating Temperature
+ 85 C
Mounting Style
SMD/SMT
Minimum Operating Temperature
- 40 C
Power Fail Detection
No
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
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 MAX6351LTUT+T

MAX6351LTUT+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. µP Supervisory Circuits ♦ ...

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. ...

Page 3

ELECTRICAL CHARACTERISTICS (continued +1.2V to +5.5V -40°C to +85°C, unless otherwise noted. Typical values are PARAMETER SYMBOL ∆V Reset Threshold Tempco Reset Threshold Hysteresis V to Reset ...

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 ...

Page 5

T = +25°C, unless otherwise noted NORMALIZED RESET/WATCHDOG PERIOD vs. TEMPERATURE 1.20 1.15 1.10 1.05 1.00 0.95 0.90 0.85 0.80 -60 -40 - TEMPERATURE (°C) PULLUP CHARACTERISTICS RST1 PUSH-PULL ...

Page 6

Dual/Triple-Voltage µP Supervisory Circuits PIN MAX6352 MAX6355 MAX6351 MAX6353 MAX6356 MAX6354 MAX6357 1 — — — — — — — 5 — — — ...

Page 7

Detailed Description The MAX6351–MAX6360 microprocessor (µP) superviso- ry circuits maintain system integrity by alerting the µP to fault conditions. These ICs monitor multiple-supply sys- tems. The output reset state is guaranteed to remain viable while either ...

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 ...

Page 9

RST1 MAX6351 GND 2 5 RST2 SOT23-6 RST MAX6355 *MAX6355: OPEN-DRAIN OUTPUT GND 2 5 RSTIN MAX6356 *MAX6356: PUSH-PULL OUTPUT (V MAX6357 *MAX6357: PUSH-PULL ...

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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