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MAX6314US28D4+T

Description
supervisory circuits 68hc11/bidirectional compatible uP reset
CategoryPower/power management    The power supply circuit   
File Size452KB,8 Pages
ManufacturerMaxim
Websitehttps://www.maximintegrated.com/en.html
Environmental Compliance
Download Datasheet Parametric View All

MAX6314US28D4+T Overview

supervisory circuits 68hc11/bidirectional compatible uP reset

MAX6314US28D4+T Parametric

Parameter NameAttribute value
Is it lead-free?Lead free
Is it Rohs certified?conform to
MakerMaxim
Parts packaging codeSOT-143
package instructionLSOP, TO-253LOW
Contacts4
Reach Compliance Codecompli
ECCN codeEAR99
Factory Lead Time6 weeks
Other featuresRESET THRESHOLD VOLTAGE IS 2.8V; MANUAL RESET INPUT
Adjustable thresholdNO
Analog Integrated Circuits - Other TypesPOWER SUPPLY SUPPORT CIRCUIT
JESD-30 codeR-PDSO-G4
JESD-609 codee3
length2.92 mm
Humidity sensitivity level1
Number of channels1
Number of functions1
Number of terminals4
Maximum operating temperature85 °C
Minimum operating temperature-40 °C
Package body materialPLASTIC/EPOXY
encapsulated codeLSOP
Encapsulate equivalent codeTO-253LOW
Package shapeRECTANGULAR
Package formSMALL OUTLINE, LOW PROFILE
Peak Reflow Temperature (Celsius)260
power supply1/5.5 V
Certification statusNot Qualified
Maximum seat height1.22 mm
Maximum supply current (Isup)0.012 mA
Maximum supply voltage (Vsup)5.5 V
Minimum supply voltage (Vsup)2.5 V
surface mountYES
technologyCMOS
Temperature levelINDUSTRIAL
Terminal surfaceMatte Tin (Sn)
Terminal formGULL WING
Terminal pitch1.92 mm
Terminal locationDUAL
Threshold voltage nominal+2.8V
Maximum time at peak reflow temperatureNOT SPECIFIED
width1.3 mm
19-1090; Rev 2; 12/05
68HC11/Bidirectional-Compatible
µP Reset Circuit
General Description
The MAX6314 low-power CMOS microprocessor (µP)
supervisory circuit is designed to monitor power
supplies in µP and digital systems. The MAX6314’s
RESET
output is bidirectional, allowing it to be directly
connected to µPs with bidirectional reset inputs, such
as the 68HC11. It provides excellent circuit reliability
and low cost by eliminating external components and
adjustments. The MAX6314 also provides a debounced
manual reset input.
This device performs a single function: it asserts a reset
signal whenever the V
CC
supply voltage falls below a
preset threshold or whenever manual reset is asserted.
Reset remains asserted for an internally programmed
interval (reset timeout period) after V
CC
has risen above
the reset threshold or manual reset is deasserted.
The MAX6314 comes with factory-trimmed reset
threshold voltages in 100mV increments from 2.5V
to 5V. Preset timeout periods of 1ms, 20ms, 140ms,
and 1120ms (minimum) are also available. The device
comes in a SOT143 package.
For a µP supervisor with an open-drain reset pin, see
the MAX6315 data sheet.
Features
Small SOT143 Package
RESET
Output Simplifies Interface to
Bidirectional Reset I/Os
Precision Factory-Set V
CC
Reset Thresholds:
100mV Increments from 2.5V to 5V
±1.8% Reset Threshold Accuracy at T
A
= +25°C
±2.5% Reset Threshold Accuracy Over Temp.
Four Reset Timeout Periods Available:
1ms, 20ms, 140ms, or 1120ms (minimum)
Immune to Short V
CC
Transients
5µA Supply Current
Pin-Compatible with MAX811
MAX6314
Ordering Information
PART
MAX6314US50D1-T
MAX6314US49D1-T
MAX6314US48D1-T
MAX6314US47D1-T
MAX6314US46D1-T
MAX6314US45D1-T
NOMINAL
V
TH
(V)
5.00
4.90
4.80
4.70
4.63
4.50
MIN t
RP
(ms)
1
1
1
1
1
1
TOP
MARK
††
AA_ _
AB_ _
AC_ _
AD_ _
AE_ _
AF_ _
________________________Applications
Computers
Controllers
Intelligent Instruments
Critical µP and µC Power Monitoring
Portable/Battery-Powered Equipment
The MAX6314 is available in a SOT143 package, -40°C to
+85°C temperature range.
††
The first two letters in the package top mark identify the part,
while the remaining two letters are the lot tracking code.
Typical Operating Circuit
V
CC
V
CC
Devices are available in both leaded and lead-free packaging.
Specify lead-free by replacing “-T” with “+T” when ordering.
Ordering Information continued at end of data sheet.
LASER-
TRIMMED
RESISTORS
V
CC
68HC11**
Pin Configuration
TOP VIEW
µP
4.7kΩ
RESET
MR
RESET
CIRCUITRY
GND
1
4
V
CC
MAX6314
RESET
RESET
MAX6314
GND
2
3
MR
SOT143
**OR OTHER
µC/µP
WITH BIDIRECTIONAL RESET I/O PIN.
*P
1
________________________________________________________________
Maxim Integrated Products
For pricing, delivery, and ordering information, please contact Maxim/Dallas Direct! at
1-888-629-4642, or visit Maxim’s website at www.maxim-ic.com.
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