Industry's-First Multiple Voltage Supervisors in SOT Package
Description
The MAX6351-MAX6360 microprocessor (µP) supervisors with multiple reset voltages significantly improve system 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 startup 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 VCC1 and the other is referenced to VCC2. The MAX6353/MAX6356/MAX6359 offer an active-low, push-pull reset output referenced to VCC1. The MAX6354/MAX6357/MAX6360 offer an active-low, push-pull reset output referenced to VCC2.
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. 
Key Features
Precision Monitoring of Multiple +1.8V, +2.5V, +3.0V, +3.3V, and +5V Power-Supply Voltages
Precision Factory-Set Power-Supply Reset Thresholds
20µA Supply Current
100ms min Power-On Reset Pulse Width
Debounced TTL/CMOS-Compatible Manual-Reset Input
Watchdog Timer
- 46.4s Startup Timeout
- 2.9s Normal Timeout
Fully Guaranteed Over Temperature
Guaranteed RESET-bar Valid to VCC1 = 1V or VCC2 = 1V
Power-Supply Transient Immunity
No External Components for Dual-Voltage Systems
Small 5- and 6-Pin SOT23 Packages
Low Cost
Applications
Computers
Controllers
Intelligent Instruments
Multivoltage Systems Equipment
Portable Battery-Powered
| Diagram |
|
Functional Diagram
| Key Specifications: Supervisors (2 Monitored Voltages) |
| Part Number |
Interface |
Reset Thresh.
(V) |
Reset Out |
tRESET |
Watchdog Feature |
Watchdog Timeout |
Supervisor Features |
Reset Thresh. Accur.
(%) |
ICC
(µA) |
| min |
@ +25°C |
max |
| MAX6351 |
Factory Fixed |
| 1.2 to 1.8 |
| 1.8 to 2.5 |
| 2.5 to 3.3 |
| 3.3 to 5.5 | |
|
85ms to 300ms |
No Watchdog |
- |
Manual Reset |
1.5 |
50 |
| MAX6352 |
|
No Watchdog |
- |
| MAX6353 |
|
No Watchdog |
- |
| MAX6354 |
|
No Watchdog |
- |
| MAX6358 |
|
| Extended Setup Period |
| Input (WDI) | |
|
| MAX6359 |
|
| Extended Setup Period |
| Input (WDI) | |
|
| MAX6360 |
|
| Extended Setup Period |
| Input (WDI) | |
|
| See All Supervisors (2 Monitored Voltages) (84) |
| Key Specifications: Supervisors (3 Monitored Voltages) |
| Part Number |
Interface |
Reset Thresh.
(V) |
Reset Out |
tRESET |
Watchdog Feature |
Supervisor Features |
Reset Thresh. Accur.
(%) |
ICC
(µA) |
| min |
@ +25°C |
max |
| MAX6355 |
| Factory Fixed |
| R/C Adjustable | |
| 1.2 to 1.8 |
| 1.8 to 2.5 |
| 2.5 to 3.3 |
| 3.3 to 5.5 | |
|
85ms to 300ms |
No Watchdog |
| Adjustable Reset Input |
| Manual Reset | |
1.5 |
50 |
| MAX6356 |
|
| MAX6357 |
|
| See All Supervisors (3 Monitored Voltages) (32) |
source：ShenZhen henlito electronic co.,ltd.
web:www.henlito.com |
