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MCP111T-270E/TT Datasheet

  • MCP111T-270E/TT

  • IC, SUPERVISOR, 2.63V, LOW, SOT-23B; Threshold Voltage:2.63V...

  • 26頁

  • Microchip   Microchip

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MCP111/112
4.2
Negative Going V
DD
Transients
4.3
The minimum pulse width (time) required to cause a
reset may be an important criteria in the implementa-
tion of a POR circuit. This time is referred to as
transient duration and is the amount of time needed for
these supervisory devices to respond to a drop in V
DD
.
The transient duration time is dependant on the magni-
tude of V
TRIP
鈥?V
DD
. Generally speaking, the transient
duration decreases with increases in V
TRIP
鈥?V
DD
.
Figure 4-3 shows a typical transient duration vs. reset
comparator overdrive for which the MCP111/112 will
not generate a reset pulse. It shows that the farther
below the trip point the transient pulse goes, the
duration of the pulse required to cause a reset gets
shorter. Figure 2-18 shows the transient response
characteristics for the MCP111/112.
A 0.1 碌F bypass cap mounted as close as possible to
the V
DD
pin provides additional transient immunity
(refer to Figure 4-1).
Effect of Temperature on Time-out
Period (t
RPU
)
The time-out period (t
RPU
) determines how long the
device remains in the reset condition. This is affected
by both V
DD
and temperature. The graph shown in
Figures 2-22, 2-23 and 2-24 show the typical
response for different V
DD
values and temperatures.
5V
Supply Voltage
V
TRIP(MIN)
- V
DD
V
TRIP(MAX)
V
TRIP(MIN)
t
TRANS
Time (碌s)
0V
FIGURE 4-3:
Example of Typical
Transient Duration Waveform.
DS21889B-page 12
錚?/div>
2004 Microchip Technology Inc.

MCP111T-270E/TT 產(chǎn)品屬性

  • Microchip

  • 監(jiān)控電路

  • 1

  • 2.63 V

  • 2.591 V

  • 2.67 V

  • Not Resettable

  • No Watchdog

  • 5.5 V

  • 1 V

  • 1.75 uA

  • + 125 C

  • SMD/SMT

  • SOT-23-3

  • Reel

  • - 40 C

  • 3000

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