MAX6365 Maxim, MAX6365 Datasheet
MAX6365
Manufacturer Part Number
MAX6365
Description
SOT23 / Low-Power P Supervisory Circuits with Battery Backup and Chip-Enable Gating
Manufacturer
Maxim
Datasheet
1.MAX6365.pdf
(15 pages)
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The MAX6365–MAX6368 supervisory circuits simplify
power-supply monitoring, battery-backup control func-
tions, and memory write protection in microprocessor
(µP) systems. The circuits significantly improve the size,
accuracy, and reliability of modern systems with an ultra-
small integrated solution.
These devices perform four basic system functions:
1) Provide a µP reset output during V
2) Internally control V
3) Provide memory write protection through internal
4) Include one of the following options: a manual reset
The MAX6365–MAX6368 operate from V
ages as low as 1.2V. The factory preset reset threshold
voltages range from 2.32V to 4.63V (see Ordering
Information). In addition, each part is offered in three
reset output versions: push-pull active low, open-drain
active low, or open-drain active high (see Selector
Guide). The MAX6365–MAX6368 are available in minia-
ture 8-pin SOT23 packages.
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.
19-1658; Rev 1; 6/01
Pin Configurations continued at end of data sheet.
up, power-down, and brownout conditions.
maintain data or low-power operation for CMOS
RAM, CMOS µPs, real-time clocks, and other digital
logic when the main supply fails.
chip-enable gating during supply or processor faults.
input (MAX6365), a watchdog timer function
(MAX6366), a battery-on output (MAX6367), or an
auxiliary user-adjustable reset input (MAX6368).
TOP VIEW
Critical µP/µC Power
Monitoring
Fax Machines
Industrial Control
Computers/Controllers
with Battery Backup and Chip-Enable Gating
RESET, RESET
SOT23, Low-Power µP Supervisory Circuits
CE IN
GND
MR
________________________________________________________________ Maxim Integrated Products
1
2
4
3
CC
General Description
MAX6365
SOT23
to backup-battery switching to
Pin Configurations
Portable/Battery-
Powered Equipment
Set-Top Boxes
POS Equipment
6
8
7
5
Applications
CC
CE OUT
BATT
OUT
V
CC
CC
supply power-
supply volt-
o Low +1.2V Operating Supply Voltage (V
o Precision Monitoring of +5.0V, +3.3V, +3.0V, and
o On-Board Gating of Chip-Enable Signals, 1.5ns
o Debounced Manual Reset Input (MAX6365)
o Watchdog Timer, 1.6s Timeout (MAX6366)
o Battery-On Output Indicator (MAX6367)
o Auxiliary User-Adjustable RESET IN (MAX6368)
o Low 10µA Quiescent Supply Current
o Three Available Output Structures
o RESET/RESET Valid Down to 1.2V Guaranteed
o Power-Supply Transient Immunity
o 150ms min Reset Timeout Period
o Miniature 8-Pin SOT23 Package
*These parts offer a choice of reset threshold voltages. From the
Reset Threshold Ranges table, insert the desired threshold volt-
age code in the blank to complete the part number. SOT parts
come in tape-and-reel only and must be ordered in 2500-piece
increments. See Device Marking Codes for a complete parts list,
including SOT top marks and standard threshold versions. See
Selector Guide for a listing of device features.
Typical Operating Circuit appears at end of data sheet.
M A X6 3 6 5 LK A_ _-T
MAX6365PKA_ _-T
MAX6365HKA_ _-T
M A X6 3 6 6 LK A_ _-T
M A X 6 36 6P K A_ _-T
M A X 6 36 6H K A_ _-T
M A X6 3 6 7 LK A_ _-T
M A X 6 36 7P K A_ _-T
M A X 6 36 7H K A_ _-T
M A X6 3 6 8 LK A_ _-T
M A X 6 36 8P K A_ _-T
M A X 6 36 8H K A_ _-T
+2.5V Power-Supply Voltages
Propagation Delay
(V
CC
Push-Pull RESET
Open-Drain RESET
Open-Drain RESET
PART*
or V
BATT
)
Ordering Information
TEMP. RANGE
-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
Features
PIN-
8 SOT23-8
8 SOT23-8
8 SOT23-8
8 SOT23-8
8 SOT23-8
8 SOT23-8
8 SOT23-8
8 SOT23-8
8 SOT23-8
8 SOT23-8
8 SOT23-8
8 SOT23-8
CC
PACKAGE
or V
BATT
1
)
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