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19-0496; Rev 14; 11/18
General Description
The MAX6316–MAX6322 family of microprocessor (μP)
supervisory circuits monitors power supplies and micro-
processor activity in digital systems. It offers several com-
binations of push/pull, open-drain, and bidirectional (such
as Motorola 68HC11) reset outputs, along with watchdog
and manual reset features. The Selector Guide below lists
the specific functions available from each device.
These devices are available in 26 factory-trimmed reset
threshold voltages (from 2.5V to 5V, in 100mV increments),
featuring four minimum power-on reset timeout periods
(from 1ms to 1.12s), and four watchdog timeout periods
(from 6.3ms to 25.6s). Thirteen standard versions are
available with an order increment requirement of 2500
pieces (see Standard Versions table); contact the factory
for availability of other versions, which have an order
increment requirement of 10,000 pieces.
The MAX6316–MAX6322 are offered in a miniature 5-pin
SOT23 package.
Applications
● Portable Computers
● Computers
● Controllers
● Intelligent Instruments
● Portable/Battery-Powered Equipment
● Embedded Control Systems
Benets and Features
● Integrated Configuration Enables Flexible Designs
• Available in 26 Reset-Threshold Voltages
- 2.5V to 5V, in 100mV Increments
• Four Reset Timeout Periods
- 1ms, 20ms, 140ms, or 1.12s (min)
• Four Watchdog Timeout Periods
- 6.3ms, 102ms, 1.6s, or 25.6s (typ)
• Four Reset Output Stages
- Active-High, Push/Pull
- Active-Low, Push/Pull
- Active-Low, Open-Drain
- Active-Low, Bidirectional
● Integrated Features Increase Robustness
• Guaranteed Reset Valid to V
CC
= 1V
• Immune to Short-Negative V
CC
Transients
● Saves Board Space
• No External Components
• Small 5-Pin SOT23 Package
• AEC-Q100 Qualied
Ordering Information appears at end of data sheet.
Click here for production status of specic part numbers.
*The MAX6318/MAX6319/MAX6321/MAX6322 feature two types of reset output on each device.
PART
WATCHDOG
INPUT
MANUAL
RESET
INPUT
RESET
OUTPUTS*
ACTIVE-LOW
PUSH/PULL
ACTIVE-HIGH
PUSH/PULL
ACTIVE-LOW
BIDIRECTIONAL
ACTIVE-LOW
OPEN-DRAIN
MAX6316L
✔ ✔ ✔
— — —
MAX6316M
✔ ✔
— —
✔
—
MAX6317H
✔ ✔
—
✔
— —
MAX6318LH
✔
—
✔ ✔
— —
MAX6318MH
✔
— —
✔ ✔
—
MAX6319LH
—
✔ ✔ ✔
— —
MAX6319MH —
✔
—
✔ ✔
—
MAX6320P
✔ ✔
— — —
✔
MAX6321HP
✔
— —
✔
—
✔
MAX6322HP
—
✔
—
✔
—
✔
Selector Guide
Typical Operating Circuit and Pin Configurations appears at
end of data sheet.
MAX6316–MAX6322 5-Pin μP Supervisory Circuits with
Watchdog and Manual Reset
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