MAX6316–MAX6322
5-Pin μP Supervisory Circuits with
Watchdog and Manual Reset
Selector Guide
General Description
The MAX6316–MAX6322 family of microprocessor (µP)
supervisory circuits monitors power supplies and
microprocessor activity in digital systems. It offers sev-
eral combinations of push/pull, open-drain, and bidirec-
tional (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 incre-
ments), 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 ver-
sions 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
Benefits 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
Ordering Information continued at end of data sheet.
ACTIVE-LOW
OPEN-DRAIN
MAX6316L
MAX6316M
MAX6317H
MAX6321HP
MAX6318LH
—
MAX6318MH
—
MAX6319LH —
MAX6319MH —
MAX6320P
ACTIVE-LOW
PUSH/PULL
—
—
—
—
—
ACTIVE-HIGH
PUSH/PULL
—
—
—
ACTIVE-LOW
BIDIRECTIONAL
—
—
—
—
—
PART
WATCHDOG
INPUT
MANUAL
RESET
INPUT
— —
—
—
MAX6322HP —
—
—
—
—
—
—
RESET OUTPUTS*
—
—
*
The MAX6318/MAX6319/MAX6321/MAX6322 feature two types of reset output on each device.
Typical Operating Circuit and Pin Configurations appear at
end of data sheet.
Devices are available in both leaded and lead(Pb)-free packaging.
Specify lead-free by replacing “-T” with “+T” when ordering.
/V Denotes an automotive-qualified part.