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MAX6715A/AX6729A/MAX6797A pdf

消耗积分:2 | 格式:rar | 大小:766 | 2008-06-30

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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 supervisory
circuits significantly improve system reliability and reduce
size compared to separate ICs or discrete components.
These devices monitor primary supply voltages (VCC1)
from 1.8V to 5.0V and secondary supply voltages (VCC2)
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-
rect reset output logic state when either VCC1 or VCC2
remains greater than 0.8V.
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 avail-
able in small 5-, 6-, and 8-pin SOT23 packages and oper-
ate over the -40°C to +125°C temperature range.
Applications
Multivoltage Systems
Telecom/Networking
Equipment
Computers/Servers
Portable/Battery-
Operated Equipment
Industrial Equipment
Printers/Fax Machines
Set-Top Boxes
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