MAX6715A–MAX6729A/
MAX6797A
Dual/Triple, Ultra-Low-Voltage, SOT23 μP
Supervisory Circuits
General Description
Features
● V
(Primary Supply) Reset Threshold Voltages
The MAX6715A–MAX6729A/MAX6797A are ultra-low-volt-
age microprocessor (μP) supervisory circuits designed to
monitor two or three system power-supply voltages. These
devices assert a system reset if any monitored supply falls
below its factory-trimmed or adjustable threshold and main-
tain reset for a minimum timeout period after all supplies rise
above their thresholds. The integrated dual/triple superviso-
ry circuits significantly improve system reliability and reduce
size compared to separate ICs or discrete components.
CC1
from 1.58V to 4.63V
● V
(Secondary Supply) Reset Threshold Voltages
CC2
from 0.79V to 3.08V
● Externally Adjustable RSTIN Threshold for Auxiliary/
Triple-Voltage Monitoring (0.62V Internal Reference)
● Watchdog Timer Option
• 35s (min) Long Startup Period
• 1.12s (min) Normal Timeout Period
● Manual-Reset Input Option
These devices monitor primary supply voltages (V
)
CC1
● Power-Fail Input/Power-Fail Output Option
(Push-Pull and Open-Drain Active-Low)
from 1.8V to 5.0V and secondary supply voltages (V 2)
CC
from 0.9V to 3.3V with factory-trimmed reset threshold
voltage options (see the Reset Voltage Threshold Suffix
Guide). An externally adjustable RSTIN input option
allows customers to monitor a third supply voltage down
to 0.62V. These devices are guaranteed to be in the cor-
● Guaranteed Reset Valid Down to V
or
CC1
V
CC2
= 0.8V
● Reset Output Logic Options
● Immune to Short V Transients
CC
rect reset output logic state when either V
remains greater than 0.8V.
or V
CC1
CC2
● Low Supply Current 14μA (typ) at 3.6V
● Watchdog Disable Feature
A variety of push-pull or open-drain reset outputs along
with watchdog input, manual-reset input, and power-fail
input/output features are available (see the Selector
Guide). Select reset timeout periods from 1.1ms to
1120ms (min) (see the Reset Timeout Period Suffix
Guide). The MAX6715A–MAX6729A/MAX6797A are
available in small 5-, 6-, and 8-pin SOT23 packages and
operate over the -40°C to +125°C temperature range.
● Small 5-, 6-, and 8-Pin SOT23 Packages
Ordering Information
PIN-
PACKAGE
PART
TEMP RANGE
MAX6715AUT_ _D_+T
MAX6716AUT_ _D_+T
MAX6717AUK_ _D_+T
MAX6718AUK_ _D_+T
MAX6719AUT_ _D_+T
-40°C to +125°C 6 SOT23
-40°C to +125°C 6 SOT23
-40°C to +125°C 5 SOT23
-40°C to +125°C 5 SOT23
-40°C to +125°C 6 SOT23
Applications
● Multivoltage Systems
● Telecom/Networking
Equipment
● Industrial Equipment
● Printers/Fax Machines
● Set-Top Boxes
MAX6719AUT_ _D_/V+T* -40°C to +125°C 6 SOT23
● Computers/Servers
● Portable/Battery-
Operated Equipment
+Denotes a lead(Pb)-free/RoHS-compliant package.
T = Tape and reel.
/V denotes an automotive qualified part.
*Future product—contact factory for availability.
Typical Operating Circuit
Note: The first “_ _” are placeholders for the threshold voltage
levels of the devices. Desired threshold levels are set by the part
number suffix found in the Reset Voltage Threshold Suffix Guide.
The “_” after the D is a placeholder for the reset timeout delay
time. Desired delay time is set using the timeout period suffix
found in the Reset Timeout Period Suffix Guide. For example,
OUT2
DC-DC
CONVERTER
UNREGULATED
DC
IN
OUT1
1.8V
I/O
0.9V
CORE
V
V
CC2
CC1
MAX6715A-
MAX6729A/
MAX6797A
SUPPLY SUPPLY
R1
R2
the MAX6716AUTLTD3-T is a dual-voltage supervisor V
=
TH1
4.625V, V
= 3.075V, and 210ms (typ) timeout period.
RESET
RST
TH2
µP
RSTIN/PFI
I/O
WDI
Ordering Information continued at end of data sheet.
MR
PFO
NMI
Pin Configurations and Selector Guide appear at end of
data sheet.
MAX67_ _
PUSHBUTTON
SWITCH
19-0536; Rev 4; 3/14
5秒后页面跳转
AO3401场效应管参数、引脚图、应用原理图
BT131可控硅参数及引脚图、工作原理详解
74LS32芯片参数、引脚图及功能真值表
全球首块英伟达H200交付 黄仁勋“送货上门”
微信公众号
抖音公众号
浙公网安备 33010502006866号 浙ICP备10014259号-119
营业执照ICP证
数据手册
如果您发现信息不准确，
