參數(shù)資料
型號： MAX16998AAUA+
廠商： MAXIM INTEGRATED PRODUCTS INC
元件分類： 時鐘/數(shù)據(jù)恢復及定時提取
英文描述： 1 TIMER(S), PROGRAMMABLE TIMER, PDSO8
封裝： 3 X 3 MM, ROHS COMPLIANT, MO-187-AA, MICRO MAX PACKAGE-8
文件頁數(shù)： 10/16頁
文件大?。?/td> 146K
代理商： MAX16998AAUA+
MAX16997/MAX16998
High-Voltage Watchdog Timers with
Adjustable Timeout Delay
_______________________________________________________________________________________
3
Note 2: RRESET and RENABLE are external pullup resistors for open-drain outputs. Connect RRESET and RENABLE to a minimum 2.5V
voltage. Connect RRESET to a maximum voltage of 18V and connect RENABLE to a maximum voltage of 28V.
Note 3: Calculated based on VRAMP = 1.235V and IRAMP = 500nA.
Note 4: WDI pulses narrower than 1s will be ignored. WDI pulses wider than 6.5s will be recognized.
Note 5: Not production tested, guaranteed by design.
PARAMETER
SYMBOL
CONDITIONS
MIN
TYP
MAX
UNITS
WATCHDOG TIMER
VIH
2.25
WDI Input Threshold
VIL
0.9
V
WDI Input Hysteresis
WDIHYST
200
mV
WDI Minimum Pulse Width
tWDImin
(Note 4)
6.5
s
WDI Input Current
IWDI
WDI = 0 or 14V
0.1
A
Minimum Watchdog Timeout
tWPmin
CSWT = 680pF (Note 3)
6.8
ms
Watchdog Timeout Period
tWP
CSWT = 1200pF (Note 3)
12
ms
Maximum Watchdog Timeout
tWPmax
CSWT = 22nF
217.36
ms
MAX16998B
45
50
55
Watchdog Window
DWDI
MAX16998D
67.5
75
82.5
%tWP
WDI to ENABLE Output Delay
Start from WDI third wrong trigger
100
s
RESET Pullup Resistor Supply
Voltage
(Note 5)
2.25
2.5
18.00
V
ENABLE Pullup Resistor Supply
Voltage
(Note 5)
2.25
2.5
28.00
V
ELECTRICAL CHARACTERISTICS (continued)
(VIN = 14V, TA = TJ = -40°C to +125°C, unless otherwise noted. Typical values are at TA = +25°C.) (Note 2)
RESET TIMEOUT PERIOD
vs. CSRT
MAX16997/98
toc01
CSRT (nF)
RESET
TIMEOUT
PERIOD
(ms)
100
10
1
10
100
1000
10,000
0.1
1000
IRAMP = 500nA
WATCHDOG TIMEOUT PERIOD
vs. CSWT
MAX16997/98
toc02
CSWT (nF)
WATCHDOG
TIMEOUT
PERIOD
(ms)
100
10
1
10
100
1000
10,000
1
0.1
1000
IRAMP = 500nA
SUPPLY CURRENT
vs. SUPPLY VOLTAGE
MAX16997/98
toc03
SUPPLY VOLTAGE (V)
SUPPLY
CURRENT
(
A)
40
30
10
20
12
14
16
18
22
20
24
26
10
050
RESET AND ENABLE NOT
ASSERTED
Typical Operating Characteristics
(CSWT = CSRT = 1500pF, TA = +25°C, unless otherwise noted.)
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相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
MAX16998AAUA/V+ 功能描述:監(jiān)控電路 Watchdog Timer w/Adj Timeout Delay RoHS:否 制造商:STMicroelectronics 監(jiān)測電壓數(shù): 監(jiān)測電壓: 欠電壓閾值: 過電壓閾值: 輸出類型:Active Low, Open Drain 人工復位:Resettable 監(jiān)視器:No Watchdog 電池備用開關(guān):No Backup 上電復位延遲（典型值）:10 s 電源電壓-最大:5.5 V 最大工作溫度:+ 85 C 安裝風格:SMD/SMT 封裝 / 箱體:UDFN-6 封裝:Reel
MAX16998AAUA/V+T 功能描述:監(jiān)控電路 Watchdog Timer w/Adj Timeout Delay RoHS:否 制造商:STMicroelectronics 監(jiān)測電壓數(shù): 監(jiān)測電壓: 欠電壓閾值: 過電壓閾值: 輸出類型:Active Low, Open Drain 人工復位:Resettable 監(jiān)視器:No Watchdog 電池備用開關(guān):No Backup 上電復位延遲（典型值）:10 s 電源電壓-最大:5.5 V 最大工作溫度:+ 85 C 安裝風格:SMD/SMT 封裝 / 箱體:UDFN-6 封裝:Reel
MAX16998AAUA+ 功能描述:監(jiān)控電路 Watchdog Timer w/Adj Timeout Delay RoHS:否 制造商:STMicroelectronics 監(jiān)測電壓數(shù): 監(jiān)測電壓: 欠電壓閾值: 過電壓閾值: 輸出類型:Active Low, Open Drain 人工復位:Resettable 監(jiān)視器:No Watchdog 電池備用開關(guān):No Backup 上電復位延遲（典型值）:10 s 電源電壓-最大:5.5 V 最大工作溫度:+ 85 C 安裝風格:SMD/SMT 封裝 / 箱體:UDFN-6 封裝:Reel
MAX16998AAUA+T 功能描述:監(jiān)控電路 Watchdog Timer w/Adj Timeout Delay RoHS:否 制造商:STMicroelectronics 監(jiān)測電壓數(shù): 監(jiān)測電壓: 欠電壓閾值: 過電壓閾值: 輸出類型:Active Low, Open Drain 人工復位:Resettable 監(jiān)視器:No Watchdog 電池備用開關(guān):No Backup 上電復位延遲（典型值）:10 s 電源電壓-最大:5.5 V 最大工作溫度:+ 85 C 安裝風格:SMD/SMT 封裝 / 箱體:UDFN-6 封裝:Reel
MAX16998BAUA/V+ 功能描述:監(jiān)控電路 Watchdog Timer w/Adj Timeout Delay RoHS:否 制造商:STMicroelectronics 監(jiān)測電壓數(shù): 監(jiān)測電壓: 欠電壓閾值: 過電壓閾值: 輸出類型:Active Low, Open Drain 人工復位:Resettable 監(jiān)視器:No Watchdog 電池備用開關(guān):No Backup 上電復位延遲（典型值）:10 s 電源電壓-最大:5.5 V 最大工作溫度:+ 85 C 安裝風格:SMD/SMT 封裝 / 箱體:UDFN-6 封裝:Reel
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