參數(shù)資料
型號： LTC1536CMS8
廠商： LINEAR TECHNOLOGY CORP
元件分類： 電源管理
英文描述： Precision Triple Supply Monitor for PCI Applications
中文描述： 3-CHANNEL POWER SUPPLY SUPPORT CKT, PDSO8
封裝： PLASTIC, MSOP-8
文件頁數(shù)： 3/12頁
文件大?。?/td> 174K
代理商： LTC1536CMS8
3
LTC1536
SYMBOL
I
PBR
PARAMETER
PBR Pull-Up Current
CONDITIONS
PBR = 0V, 0
°
C
≤
T
A
≤
70
°
C
PBR = 0V, –40
°
C
≤
T
A
≤
85
°
C
MIN
3
3
TYP
7
7
MAX
10
15
0.8
UNITS
G
G
μ
A
μ
A
V
V
ns
ms
V
IL
V
IH
t
PW
t
DB
PBR, RST Input Low Voltage
PBR, RST Input High Voltage
PBR Min Pulse Width
PBR Debounce
G
G
2
G
40
Deassertion of PBR Input to SRST
Output (PBR Pulse Width = 1
μ
s)
PBR Held Less Than V
IL
, 0
°
C to 70
°
C
PBR Held Less Than V
IL
, –40
°
C to 85
°
C
I
SINK
= 5mA
I
SINK
= 100
μ
A
0
°
C
≤
T
A
≤
70
°
C
G
20
35
t
PB
PBR Assertion Time for Transition
from Soft to Hard Reset Mode
RST Output Voltage Low
G
G
1.4
1.4
2.0
2.0
0.15
0.05
0.05
0.05
0.05
0.05
0.05
0.15
0.15
2.8
3.0
0.4
0.4
0.4
0.4
0.4
0.4
0.4
0.4
0.4
s
s
V
V
V
V
V
V
V
V
V
V
V
V
V
OL
G
V
CC3
= 1V, V
CC5
= 0V
V
CC3
= 0V, V
CC5
= 1V
V
CC3
= 1V, V
CC5
= 1V
V
CC3
= 1.1V, V
CC5
= 0V
V
CC3
= 0V, V
CC5
= 1.1V
V
CC3
= 1.1V, V
CC5
= 1.1V
G
G
G
I
SINK
= 100
μ
A
–40
°
C
≤
T
A
≤
85
°
C
G
G
G
SRST Output Voltage Low
RST Output Voltage Low
RST Output Voltage High (Note 3)
SRST Output Voltage High (Note 3)
RST Output Voltage High
Propagation Delay RST to RST
High Input to Low Output
Propagation Delay RST to RST
Low Input to High Output
V
CC5
or V
CC3
0.5V Undervoltage
to RST (Note 4)
V
CC5
< (V
CC3
– 300mV) RST (Note 4)
I
SINK
= 2.5mA
I
SINK
= 2.5mA
I
SOURCE
= 1
μ
A
I
SOURCE
= 1
μ
A
I
SOURCE
= 600
μ
A
C
RST
= 20pF
G
G
V
OH
G
V
CC3
– 1
V
CC3
– 1
V
CC3
– 1
G
G
t
PHL
25
ns
t
PLH
C
RST
= 20pF
45
ns
t
FAIL
V
CC5
Drops Below 4.25V or V
CC3
Drops
Below 2.5V (Note 5)
V
CC5
Drops Below V
CC3
By 300mV
(Note 6)
G
150
450
ns
t
PF
G
50
90
ns
ELECTRICAL CHARACTERISTICS
V
CC3
= 3.3V, V
CC5
= 5V, V
CCA
= V
CC3
, T
A
= 25
°
C unless otherwise noted.
Note 4:
Conforms to PCI Local Bus Specification Rev 2.1,
Sect. 4.3.2 for t
FAIL
.
Note 5:
V
CC3
or V
CC5
falling at –0.1V/
μ
s, time measured from
V
RTX
– 500mV to RST at 1.5V.
Note 6:
V
CC5
falling from 5V to 3V in
≤
10ns, time measured from
V
CC5
= (V
CC3
– 300mV) to RST at 1.5V.
The
G
denotes specifications which apply over the full operating
temperature range.
Note 1:
Absolute Maximum Ratings are those values beyond which the life
of the device may be impaired.
Note 2:
All voltage values are with respect to GND.
Note 3:
The output pins SRST and RST have weak internal pull-ups to
V
CC3
of 6
μ
A. However, external pull-up resistors may be used when faster
rise times are required.
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