MAX6305 Datasheet, PDF (1/16 Pages) Maxim Integrated Products – 5-Pin, Multiple-Input, Programmable Reset ICs

19-1145; Rev 1; 8/98
5-Pin, Multiple-Input,
Programmable Reset ICs
General Description
The MAX6305–MAX6313 CMOS microprocessor (µP)
supervisory circuits are designed to monitor more than
one power supply. Ideal for monitoring both 5V and
3.3V in personal computer systems, these devices
assert a system reset if any of the monitored supplies
falls outside the programmed threshold. Low supply
current (15µA) and a small package suit them for
portable applications. The MAX6305–MAX6313 are
specifically designed to ignore fast transients on
any monitored supply.
These devices are available in a SOT23-5 package,
have factory-programmed reset thresholds from 2.5V to
5.0V (in 100mV increments), and feature four power-on
reset timeout periods.
Applications
Portable Computers
Computers
Controllers
Intelligent Instruments
Portable/Battery-Powered Equipment
Multivoltage Systems: 3V/5V, 5V/12V, 5V/24V
Embedded Control Systems
Pin Configurations and Typical Operating Circuit appear at
end of data sheet.
Features
o Small 5-Pin SOT23 Package
o Precision Factory-Set V_CC Reset Thresholds;
Available in 0.1V Increments from 2.5V to 5V
o Immune to Short V_CC Transients
o Guaranteed RESET Valid to V_CC = 1V
o Guaranteed Over Temperature
o 8µA Supply Current
o Factory-Set Reset Timeout Delay from
1ms (min) to 1120ms (min)
o No External Components
o Manual Reset Input
o Under/Overvoltage Supply Monitoring
Ordering Information
PART^†
MAX6305UK00D_-T
MAX6306UK_ _D_-T
MAX6307UK_ _D_-T
TEMP. RANGE
0°C to +70°C
0°C to +70°C
0°C to +70°C
PIN-PACKAGE
5 SOT23-5
5 SOT23-5
5 SOT23-5
† The MAX6306/MAX6307/MAX6309/MAX6310/MAX6312/
MAX6313 are available with factory-set V_CC reset thresholds from
2.5V to 5V, in 0.1V increments. Insert the desired nominal reset
threshold (from Table 1) into the blanks following the letters UK.
All parts also offer factory-programmed reset timeout periods.
Insert the number corresponding to the desired nominal timeout
period index following the “D” in the part number (D1 = 1ms min,
D2 = 20ms min, D3 = 140ms min, and D4 = 1120ms min). Contact
factory for availability and minimum order sizes.
Ordering Information continued at end of data sheet.
_______________________________________________________________Selector Table
PART
MAX6305
MAX6306
MAX6307
MAX6308
MAX6309
MAX6310
MAX6311
MAX6312
MAX6313
OPEN-DRAIN
RESET
OUTPUT
—
—
—
—
—
—
PUSH/PULL
RESET
OUTPUT
—
—
—
—
—
—
PUSH/PULL
RESET
OUTPUT
—
—
—
—
—
—
FACTORY-
SET RESET
THRESHOLD
ON V_CC
—
—
—
ADDITIONAL
UNDERVOLTAGE
RESET INPUTS
2
1
1
2
1
1
2
1
1
NEGATIVE/
OVERVOLTAGE
RESET INPUT
—
—
—
—
—
—
MANUAL-
RESET
INPUT
—
—
—
—
—
—
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