19-0496; Rev 3; 1/99
5 -P in µP S u p e rvis o ry Circ u it s w it h
Wa t c h d o g a n d Ma n u a l Re s e t
1–MAX632
________________Ge n e ra l De s c rip t io n
____________________________Fe a t u re s
♦ Small 5-Pin SOT23 Package
The MAX6316–MAX6322 family of microprocessor (µP)
s up e rvis ory c irc uits monitors p owe r s up p lie s a nd
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 specifically designed
♦ Available in 26 Reset Threshold Voltages
2.5V to 5V, in 100mV Increments
♦ Four Reset Timeout Periods
1ms, 20ms, 140ms, or 1.12sec (min)
♦ Four Watchdog Timeout Periods
6.3ms, 102ms, 1.6sec, or 25.6sec (typ)
♦ Four Reset Output Stages
Active-High, Push/Pull
Active-Low, Push/Pull
to ignore fast negative transients on V . Resets are
CC
guaranteed valid for V down to 1V.
CC
Active-Low, Open-Drain
Active-Low, Bidirectional
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 1.12sec), and four watchdog time-
out periods (from 6.3ms to 25.6sec). Nine 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.
♦ Guaranteed Reset Valid to V
♦ Immune to Short Negative V
♦ Low Cost
= 1V
CC
Transients
CC
♦ No External Components
_______________Ord e rin g In fo rm a t io n
The MAX6316–MAX6322 a re offe re d in a minia ture
5-pin SOT23 package.
PART
TEMP. RANGE
-40°C to +85°C
-40°C to +85°C
-40°C to +85°C
-40°C to +85°C
PIN-PACKAGE
5 SOT23-5
5 SOT23-5
5 SOT23-5
5 SOT23-5
5 SOT23-5
MAX6316LUK____-T
MAX6316MUK____-T
MAX6317HUK____-T
MAX6318HUK____-T
________________________Ap p lic a t io n s
Portable Computers
Computers
MAX6318MHUK____-T -40°C to +85°C
Controllers
Intelligent Instruments
Ordering Information continued at end of data sheet.
Portable/Battery-Powered Equipment
Embedded Control Systems
Typical Operating Circuit and Pin Configurations appear at
end of data sheet.
___________________________________________________________________S e le c t o r Gu id e
RESET OUTPUTS*
MANUAL
WATCHDOG
PART
RESET
INPUT
ACTIVE-LOW
PUSH/PULL
ACTIVE-HIGH
PUSH/PULL
ACTIVE-LOW
BIDIRECTIONAL
ACTIVE-LOW
OPEN-DRAIN
INPUT
✔
✔
✔
✔
✔
✔
✔
✔
✔
MAX6316L
—
—
✔
✔
✔
✔
✔
—
—
—
—
—
—
—
—
✔
✔
MAX6316M
MAX6317H
—
—
✔
—
—
✔
MAX6318LH
MAX6318MH**
MAX6319LH
MAX6319MH**
MAX6320P
—
—
✔
✔
✔
—
✔
—
—
✔
✔
—
✔
—
—
—
—
—
✔
✔
—
—
—
✔
MAX6321HP
MAX6322HP
—
✔
✔
—
* The MAX6318/MAX6319/MAX6321/MAX6322 feature two types of reset output on each device.
**Future product—contact factory for availability.
________________________________________________________________ Maxim Integrated Products
1
For free samples & the latest literature: http://www.maxim-ic.com, or phone 1-800-998-8800.
For small orders, phone 1-800-835-8769.