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PDF MAX6386 Data sheet ( Hoja de datos )
| Número de pieza | MAX6386 | |
| Descripción | (MAX6381 - MAX6390) Low-Power uP Reset Circuits | |
| Fabricantes | Maxim Integrated Products | |
| Logotipo |  |
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SC70, Single/Dual Low-Voltage,
Low-Power µP Reset Circuits
General Description
The MAX6381–MAX6390 microprocessor (µP) supervisory
circuits monitor power supply voltages from +1.8V to
+5.0V while consuming only 3µA of supply current at
+1.8V. Whenever VCC falls below the factory-set reset
thresholds, the reset output asserts and remains assert-
ed for a minimum reset timeout period after VCC rises
above the reset threshold. Reset thresholds are available
from +1.58V to +4.63V, in approximately 100mV incre-
ments. Seven minimum reset timeout delays ranging
from 1ms to 1200ms are available.
The MAX6381/MAX6384/MAX6387 have a push-pull
active-low reset output. The MAX6382/MAX6385/
MAX6388 have a push-pull active-high reset output,
and the MAX6383/MAX6386/MAX6389/MAX6390
have an open-drain active-low reset output. The
MAX6384/MAX6385/MAX6386 also feature a
debounced manual reset input (with internal pullup
resistor). The MAX6387/MAX6388/MAX6389 have an
auxiliary input for monitoring a second voltage. The
MAX6390 offers a manual reset input with a longer VCC
reset timeout period (1120ms or 1200ms) and a shorter
manual reset timeout (140ms or 150ms).
The MAX6381/MAX6382/MAX6383 are available in 3-pin
SC70 packages and the MAX6384–MAX6390 are avail-
able in 4-pin SC70 packages.
________________________Applications
Computers
Controllers
Intelligent Instruments
Critical µP and µC Power Monitoring
Portable/Battery-Powered Equipment
Dual Voltage Systems
TOP VIEW
Pin Configurations
GND 1
RESET
(RESET) 2
MAX6381
MAX6382
MAX6383
3 VCC
( ) IS FOR MAX6382
SC70
Pin Configurations continued at end of data sheet.
Features
o Factory-Set Reset Threshold Voltages Ranging
from +1.58V to +4.63V in Approximately 100mV
Increments
o ±2.5% Reset Threshold Accuracy Over
Temperature (-40°C to +125°C)
o Seven Reset Timeout Periods Available: 1ms,
20ms, 140ms, 280ms, 560ms, 1120ms,
1200ms (min)
o 3 Reset Output Options
Active-Low Push-Pull
Active-High Push-Pull
Active-Low Open-Drain
o Reset Output State Guaranteed Valid
Down to VCC = 1V
o Manual Reset Input (MAX6384/MAX6385/MAX6386)
o Auxiliary RESET IN
(MAX6387/MAX6388/MAX6389)
o VCC Reset Timeout (1120ms or 1200ms)/Manual
Reset Timeout (140ms or 150ms) (MAX6390)
o Negative-Going VCC Transient Immunity
o Low Power Consumption of 6µA at +3.6V
and 3µA at +1.8V
o Pin Compatible with
MAX809/MAX810/MAX803/MAX6326/MAX6327/
MAX6328/MAX6346/MAX6347/MAX6348,
and MAX6711/MAX6712/MAX6713
o Tiny 3-Pin SC70 and 4-Pin SC70 Packages
Ordering Information
PART
MAX6381XR_ _D_-T
MAX6382XR_ _D_-T
MAX6383XR_ _D_-T
TEMP. RANGE
-40°C to +125°C
-40°C to +125°C
-40°C to +125°C
PIN-PACKAGE
3 SC70-3
3 SC70-3
3 SC70-3
Note: Insert reset threshold suffix (see Reset Threshold table)
after "XR" or "XS". Insert reset timeout delay (see Reset Timeout
Delay table) after "D" to complete the part number. Sample
stock is generally held on standard versions only (see
Standard Versions table). Standard versions have an order
increment requirement of 2500 pieces. Nonstandard versions
have an order increment requirement of 10,000 pieces.
Contact factory for availability of nonstandard versions.
*MAX6390 is available with D4 or D7 timing only.
Ordering Information continued at end of data sheet.
Typical Operating Circuit appears at end of data sheet.
Selector Guide appears at end of data sheet.
________________________________________________________________ Maxim Integrated Products 1
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.
1 page  
www.datasheet4u.com
SC70, Single/Dual Low-Voltage,
Low-Power µP Reset Circuits
Pin Description
PIN
MAX6381/
MAX6383
MAX6382
MAX6384/
MAX6386/
MAX6390
MAX6385
MAX6387/
MAX6389
MAX6388
1 1 111 1
NAME
GND
— 2 — 2 — 2 RESET
FUNCTION
Ground
Active-High Push-Pull Reset Output. RESET
changes from low to high when any
monitored voltage (VCC or VRESETIN) drops
below the reset threshold or MR is pulled low.
RESET remains high for the reset timeout
period after monitored voltages exceed the
reset thresholds or MR is released.
Active-Low Open-Drain/Push-Pull Reset
Output. RESET changes from high to low when
any monitored voltage (VCC or VRESETIN)
drops below the reset threshold or MR is
2 — 2 — 2 — RESET pulled low. RESET remains low for the reset
timeout period after the monitored voltages
exceed the reset thresholds or MR is released.
Open-drain requires an external pullup
resistor.
Active-Low Manual Reset Input. Drive low to
force a reset. Reset remains active as long
as MR is low and for the reset timeout period
— — 3 3 — — MR after MR is released. Leave unconnected or
connect to VCC if unused. MR has an internal
63kΩ (1.35kΩ for MAX6390) pullup resistor to
VCC.
—— —— 3
Auxiliary Reset Input. High-impedance input
to the auxiliary reset comparator. Connect
3
RESET
IN
RESET IN to the center point of an external
resistor voltage-divider network to set the
reset threshold voltage. Reset asserts when
either VCC or RESET IN falls below its
threshold voltage.
3
3
4
4
4
4
VCC
Supply Voltage for the device and input for
fixed VCC reset threshold monitor.
_______________________________________________________________________________________ 5
5 Page 
www.datasheet4u.com
SC70, Single/Dual Low-Voltage,
Low-Power µP Reset Circuits
Package Information (continued)
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 without notice at any time.
Maxim Integrated Products, 120 San Gabriel Drive, Sunnyvale, CA 94086 408-737-7600 ____________________ 11
© 2001 Maxim Integrated Products
Printed USA
is a registered trademark of Maxim Integrated Products.
11 Page | ||
| Páginas | Total 11 Páginas | |
| PDF Descargar | [ Datasheet MAX6386.PDF ] | |
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