MAX6327 MAXIM [Maxim Integrated Products], MAX6327 Datasheet

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MAX6327

Manufacturer Part Number
MAX6327
Description
3-Pin, Ultra-Low-Power SC70/SOT ?P Reset Circuits
Manufacturer
MAXIM [Maxim Integrated Products]
Datasheet

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The MAX6326/MAX6327/MAX6328/MAX6346/MAX6347/
MAX6348 microprocessor (µP) supervisory circuits moni-
tor the power supplies in µP and digital systems. These
devices provide excellent circuit reliability and low cost
by eliminating external components and adjustments
when used with 2.5V, 3V, 3.3V, and 5V powered circuits.
These circuits perform a single function: they assert a
reset signal whenever the V
below a preset threshold, keeping it asserted for at least
100ms after V
The only difference between the devices is their output.
The MAX6326/MAX6346 (push-pull) and MAX6328/
MAX6348 (open-drain) have an active-low reset output.
The MAX6327/MAX6347 have an active-high push-pull
reset output. All of these parts are guaranteed to be in
the correct state for V
tor is designed to ignore fast transients on V
thresholds are factory-trimmable between 2.2V and
4.63V, in approximately 100mV increments. Twenty-one
standard versions are available. Contact the factory for
availability of nonstandard versions.
Ultra-low supply currents (1µA max for the MAX6326/
MAX6327/MAX6328) make these parts ideal for use in
portable equipment. All six devices are available in
space-saving SOT23 and SC70 packages.
19-1294; Rev 3; 1/00
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.
Computers
Controllers
Critical µP and µC
Power Monitoring
TOP VIEW
( ) ARE FOR THE MAX6327/MAX6347.
(RESET) RESET
CC
GND
________________________________________________________________ Maxim Integrated Products
has risen above the reset threshold.
CC
2
1
General Description
down to 1V. The reset compara-
SOT23-3/SC70-3
Intelligent Instruments
Automotive
Portable/Battery-Powered
Equipment
Pin Configuration
CC
MAX6326
MAX6327
MAX6328
MAX6346
MAX6347
MAX6348
supply voltage declines
3-Pin, Ultra-Low-Power SC70/SOT
Applications
3
V
CC
CC
. Reset
o Ultra-Low 1µA (max) Supply Current
o Precision Monitoring of 2.5V, 3V, 3.3V, and 5V
o Reset Thresholds Available from 2.2V to 4.63V
o Fully Specified Over Temperature
o 100ms (min) Power-On Reset Pulse Width
o Low Cost
o Available in Three Versions: Push-Pull RESET,
o Power-Supply Transient Immunity
o No External Components
o 3-Pin SC70/SOT23 Packages
o Pin Compatible with MAX803/MAX809/MAX810
Selector Guide appears at end of data sheet.
†The MAX6326/MAX6327/MAX6328/MAX6346/MAX6347/
MAX6348 are available in factory-set V
2.2V to 4.63V, in approximately 0.1V increments. Choose the
desired reset-threshold suffix from Table 1 and insert it in the
blank spaces following “R.” There are 21 standard versions with
a required order increment of 2500 pieces. Sample stock is gen-
erally held on the standard versions only (see the Selector
Guide). Required order increment is 10,000 pieces for nonstan-
dard versions (Table 2). Contact factory for availability. All
devices available in tape-and-reel only.
MAX6326XR_ _-T
MAX6326UR_ _-T
MAX6327XR_ _-T
MAX6327UR_ _-T
MAX6328XR_ _-T
MAX6328UR_ _-T
MAX6346XR_ _-T
MAX6346UR_ _-T
MAX6347XR_ _-T
MAX6347UR_ _-T
MAX6348XR_ _-T
MAX6348UR_ _-T
(MAX6326/MAX6327/MAX6328)
Power-Supply Voltages
Push-Pull RESET, and Open-Drain RESET
PART
µP Reset Circuits
-40°C to +85°C
-40°C to +85°C
-40°C to +85°C
-40°C to +85°C
-40°C to +85°C
-40°C to +85°C
-40°C to +85°C
-40°C to +85°C
-40°C to +85°C
-40°C to +85°C
-40°C to +85°C
-40°C to +85°C
Ordering Information
TEMP. RANGE
CC
reset thresholds from
3 SC70-3
3 SOT23-3
3 SC70-3
3 SOT23-3
3 SC70-3
3 SOT23-3
3 SC70-3
3 SOT23-3
3 SC70-3
3 SOT23-3
3 SC70-3
3 SOT23-3
PIN-PACKAGE
Features
1

Related parts for MAX6327

MAX6327 Summary of contents

Page 1

... Twenty-one standard versions are available. Contact the factory for availability of nonstandard versions. Ultra-low supply currents (1µA max for the MAX6326/ MAX6327/MAX6328) make these parts ideal for use in portable equipment. All six devices are available in space-saving SOT23 and SC70 packages. Computers ...

Page 2

... SOURCE CC TH(MAX) TH ≥ 2.1V, reset asserted I = 500µA, V SOURCE CC ≥ 1.2V, reset asserted I = 50µA, V SOURCE CC ≥ 3.2V, reset not asserted 1.2mA, V SINK CC MAX6327 only ≥ 4.5V, reset not asserted 3.2mA, V SINK CC ≤ 4.38V V TH ≥ 4. 3.2mA SINK CC TH(MAX) TH MAX6326/MAX6327/MAX6328 MAX6346/MAX6347/MAX6348 = +70° +25° ...

Page 3

... TEMPERATURE (°C) POWER-UP RESET TIMEOUT vs. TEMPERATURE 210 200 190 180 170 160 150 140 130 -40 - TEMPERATURE (°C) ______________________________________________________________Pin Description PIN PIN MAX6326/MAX6346 MAX6327 MAX6328/MAX6348 MAX6347 1 1 RESET 2 — — 2 RESET 3 3 _______________________________________________________________________________________ 3-Pin, Ultra-Low-Power SC70/SOT NAME GND Ground Active-Low Reset Output ...

Page 4

Ultra-Low-Power SC70/SOT µP Reset Circuits ____________ Applications Information Interfacing to µPs with Bidirectional Reset Pins Since the RESET output on the MAX6328/MAX6348 is open drain, these devices interface easily with micro- processors (µPs) that have bidirectional reset pins, such ...

Page 5

... MAX6347_R40-T 10 MAX6347_R39-T 10 MAX6347_R38-T 10 MAX6347_R37-T 10 MAX6347_R36-T 10 MAX6347_R35-T 10 MAX6347_R34-T 10 MAX6347_R33-T 2.5 MAX6327_R31-T 10 MAX6327_R30-T 2.5 MAX6327_R29-T 10 MAX6327_R28-T 10 MAX6327_R27-T 2.5 MAX6327_R26-T 10 MAX6327_R25-T 10 MAX6327_R24-T 2.5 MAX6327_R23-T 2.5 MAX6327_R22-T µP Reset Circuits ( -40°C to +85°C A MIN MAX 3.802 3.997 3.900 4.100 3.997 4.202 4.095 4.305 4.192 4.407 4.270 4.489 4.387 4 ...

Page 6

Ultra-Low-Power SC70/SOT µP Reset Circuits Table 2. Device Marking Codes and Minimum Order Increments (continued) TOP MARK PART SOT23 SC70 MAX6348_R46-T FZCK ACN MAX6348_R45-T FZCJ – MAX6348_R44-T FZCI ACM MAX6348_R43-T FZCH – MAX6348_R42-T FZCG – MAX6348_R41-T FZCF – MAX6348_R40-T ...

Page 7

Information _______________________________________________________________________________________ 3-Pin, Ultra-Low-Power SC70/SOT µP Reset Circuits 7 ...

Page 8

Ultra-Low-Power SC70/SOT µP Reset Circuits Maxim cannot assume responsibility for use of any circuitry other than circuitry entirely embodied in a Maxim product. No circuit patent licenses are implied. Maxim reserves the right to change the circuitry and specifications ...

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