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參數(shù)資料
| 型號： | LTC1326-2.5 |
| 廠商： | Linear Technology Corporation |
| 英文描述： | Micropower Precision Triple Supply Monitors(微功耗,三路電源精密監(jiān)視器(2.5V，3.3V和可調(diào))) |
| 中文描述： | 微精密的三路電源監(jiān)視器（微功耗，三路電源精密監(jiān)視器（2.5伏，3.3伏和可調(diào)）） |
| 文件頁數(shù)： | 6/16頁 |
| 文件大小： | 257K |
| 代理商： | LTC1326-2.5 |
6
LTC1326/LTC1326-2.5
RST (Pin 6):
Reset Logic Output. Active low, open-drain
logic output with weak pull-up to V
CC3
. Can be pulled up
greater than V
CC3
when interfacing to 5V logic. Asserted
when one or more of the supplies are below trip
thresholds and held for 200ms after all supplies become
valid. Also asserted after PBR is held low for more than
2 seconds and for an additional 200ms after PBR is
released.
SRST (Pin 7):
Soft Reset. Active low, open-drain logic
output with weak pull-up to V
CC3
. Can be pulled up
greater than V
CC3
when interfacing to 5V logic. Asserted
for 100
μ
s after PBR is held low for less than 2 seconds
and released.
PBR (Pin 8):
Push-Button Reset. Active low logic input
with weak pull-up to V
CC3
. Can be pulled up greater than
V
CC3
when interfacing to 5V logic. When asserted for less
than 2 seconds, outputs a soft reset 100
μ
s pulse on the
SRST pin. When PBR is asserted for greater than 2
seconds, the RST output is forced low and remains low
until 200ms after PBR is released.
V
CC3
(Pin 1):
3.3V Sense Input and Power Supply Pin for
the IC. Bypass to ground with
≥
0.1
μ
F ceramic capacitor.
V
CC5
(Pin 2) (LTC1326):
5V Sense Input. Used as gate
drive for the RST output FET when the voltage on V
CC3
is
less than the voltage on V
CC5
. If unused, it can be tied to
V
CC3
(see Dual and Single Supply Monitor Operation in
the Applications Information section).
V
CC25
(Pin 2) (LTC1326-2.5):
2.5V Sense Input. Used as
gate drive for RST output FET when the voltage on V
CC3
is less than the voltage on V
CC25
. If unused it can be tied
to V
CC3
.
V
CCA
(Pin 3):
1V Sense, High Impedance Input. Can be
used as a logic input with a 1V threshold. If unused it can
be tied to either V
CC3
or V
CC25
.
GND (Pin 4):
Ground.
RST (Pin 5):
Reset Logic Output. Active high CMOS logic
output, drives high to V
CC3
, buffered complement of RST.
An external pull-down on the RST pin will drive this pin
high.
PI
FU
CTIO
N
S
U
U
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