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MAX6381, MAX6382, MAX6383, MAX6384, MAX6385, MAX6386, MAX6387, MAX6388, MAX6389, MAX6390
SC70/µDFN, Single/Dual Low-Voltage, Low-Power µP Reset Circuits
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Status
Active: In Production.
Description
The MAX6381–MAX6390 microprocessor (µP) supervisory
circuits monitor power-supply voltages from +1.8V to
+5.0V while consuming only 3µA of supply current at
+1.8V. Whenever VCC falls below the factory-set reset
thresholds, the reset output asserts and remains asserted
for a minimum reset timeout period after VCC rises
above the reset threshold. Reset thresholds are available
from +1.58V to +4.63V, in approximately 100mV increments.
Seven minimum reset timeout delays ranging
from 1ms to 1200ms are available.
The MAX6381/MAX6384/MAX6387 have a push-pull
active-low reset output. The MAX6382/MAX6385/MAX6388 have a push-pull active-high reset output, and the MAX6383/MAX6386/MAX6389/MAX6390
have an open-drain active-low reset output. The
MAX6384/MAX6385/MAX6386 also feature a debounced manual reset input (with internal pullup resistor). The MAX6387/MAX6388/MAX6389 have an
auxiliary input for monitoring a second voltage. The
MAX6390 offers a manual reset input with a longer VCC
reset timeout period (1120ms or 1200ms) and a shorter
manual reset timeout (140ms or 150ms).
The MAX6381/MAX6382/MAX6383 are available in 3-pin SC70 and 6-pin µDFN packages and the MAX6384–MAX6390 are available in 4-pin SC70 and 6-pin µDFN packages.
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Data Sheet
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Key Features
- Factory-Set Reset Threshold Voltages Ranging from +1.58V to +4.63V in Approximately 100mV Increments
- ±2.5% Reset Threshold Accuracy Over Temperature (-40°C to +125°C)
- Seven Reset Timeout Periods Available: 1ms, 20ms, 140ms, 280ms, 560ms, 1120ms, 1200ms (min)
- 3 Reset Output Options
- Active-Low Push-Pull
- Active-High Push-Pull
- Active-Low Open-Drain
- Reset Output State Guaranteed Valid
Down to VCC = 1V
- Manual Reset Input (MAX6384/MAX6385/MAX6386)
- Auxiliary RESET IN (MAX6387/MAX6388/MAX6389)
- VCC Reset Timeout (1120ms or 1200ms)/Manual Reset Timeout (140ms or 150ms) (MAX6390)
- Negative-Going VCC Transient Immunity
- Low Power Consumption of 6µA at +3.6V
and 3µA at +1.8V
- Pin Compatible with MAX809/MAX810/MAX803/MAX6326/MAX6327/MAX6328/MAX6346/MAX6347/MAX6348, and MAX6711/MAX6712/MAX6713
- Tiny 3-Pin/4-Pin SC70 and 6-Pin µDFN Packages
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Applications/Uses
- Computers
- Controllers
- Critical µP and µC Power Monitoring
- Dual Voltage Systems
- Intelligent Instruments
- Portable Battery-Powered Equipment
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Key Specifications:
| Pushbutton Devices |
| Part Number |
Monitored Voltages |
Manual Reset Feature |
MR1 Setup Time |
Reset Thresh.
(V) |
Reset Out |
tRESET |
Reset Thresh. Accur.
(%) |
ICC
(µA) |
Package/Pins |
Budgetary Price |
| min |
@ +25°C |
max |
See Notes |
| MAX6390 |
1 |
Single Soft/Hard Reset Output |
1µs |
| 1.2 to 1.79 | | 1.8 to 2.49 | | 2.5 to 3.29 | | 3.3 to 4.99 |
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>1s |
1.5 |
13 |
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$1.00 @1k |
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See All Pushbutton Devices (17)
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Pricing Notes:
This pricing is BUDGETARY, for comparing similar parts. Prices are in U.S. dollars and subject to change. Quantity pricing may vary substantially and international prices may differ due to local duties, taxes, fees, and exchange rates. For volume-specific prices and delivery, please see the price and availability page or contact an authorized distributor.
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| Supervisors (2 Monitored Voltages) |
| Part Number |
Interface |
Reset Thresh.
(V) |
Reset Out |
tRESET |
Watchdog Feature |
Supervisor Features |
Reset Thresh. Accur.
(%) |
ICC
(µA) |
Budgetary Price |
| min |
@ +25°C |
max |
See Notes |
| MAX6387 |
| Factory Fixed | | R/C Adjustable |
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| 1.2 to 1.8 | | 1.8 to 2.5 | | 2.5 to 3.3 | | 3.3 to 5.5 |
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| 1ms to 15ms | | 15ms to 85ms | | 85ms to 300ms | | 300ms to 1s | | >1s |
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No Watchdog |
| Adjustable Reset Input | | Manual Reset |
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1.5 |
13 |
$1.00 @1k |
| MAX6388 |
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Adjustable Reset Input |
$1.00 @1k |
| MAX6389 |
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Adjustable Reset Input |
$1.00 @1k |
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See All Supervisors (2 Monitored Voltages) (84)
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Pricing Notes:
This pricing is BUDGETARY, for comparing similar parts. Prices are in U.S. dollars and subject to change. Quantity pricing may vary substantially and international prices may differ due to local duties, taxes, fees, and exchange rates. For volume-specific prices and delivery, please see the price and availability page or contact an authorized distributor.
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Diagram
Typical Operating Circuit
More Information
Didn't Find What You Need?
Information Index
Document Ref.: 19-1839
Rev 4;
2007-05-10
This page last modified: 2009-10-26
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