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参数资料
| 型号： | MAX16997AAUA/V+ |
| 厂商： | Maxim Integrated Products |
| 文件页数： | 3/16页 |
| 文件大小： | 0K |
| 描述： | IC TIMER WATCHDOG 8UMAX |
| 产品培训模块： | Lead (SnPb) Finish for COTS Obsolescence Mitigation Program |
| 标准包装： | 50 |
| 类型： | 监视器电路 |
| 监视电压数目： | 1 |
| 输出： | 开路漏极或开路集电极 |
| 复位： | 低有效 |
| 复位超时： | 可调节/可选择 |
| 电压 - 阀值： | 可调节/可选择 |
| 工作温度： | -40°C ~ 125°C |
| 安装类型： | 表面贴装 |
| 封装/外壳： | 8-TSSOP，8-MSOP（0.118"，3.00mm 宽） |
| 供应商设备封装： | 8-uMAX |
| 包装： | 管件 |
High-Voltage Watchdog Timers with
Adjustable Timeout Delay
ELECTRICAL CHARACTERISTICS (continued)
(V IN = 14V, T A = T J = -40°C to +125°C, unless otherwise noted. Typical values are at T A = +25°C.) (Note 2)
PARAMETER
SYMBOL
CONDITIONS
MIN
TYP
MAX
UNITS
WATCHDOG TIMER
WDI Input Threshold
WDI Input Hysteresis
V IH
V IL
WDI HYST
2.25
200
0.9
V
mV
WDI Minimum Pulse Width
WDI Input Current
Minimum Watchdog Timeout
Watchdog Timeout Period
Maximum Watchdog Timeout
t WDImin
I WDI
t WPmin
t WP
t WPmax
(Note 4)
WDI = 0 or 14V
C SWT = 680pF (Note 3)
C SWT = 1200pF (Note 3)
C SWT = 22nF
6.5
0.1
6.8
12
217.36
μs
μA
ms
ms
ms
Watchdog Window
D WDI
MAX16998B
MAX16998D
45
67.5
50
75
55
82.5
%t WP
WDI to ENABLE Output Delay
Start from WDI third wrong trigger
100
μs
RESET Pullup Resistor Supply
Voltage
ENABLE Pullup Resistor Supply
Voltage
(Note 5)
(Note 5)
2.25
2.25
2.5
2.5
18.00
28.00
V
V
Note 2: R RESET and R ENABLE are external pullup resistors for open-drain outputs. Connect R RESET and R ENABLE to a minimum 2.5V
voltage. Connect R RESET to a maximum voltage of 18V and connect R ENABLE to a maximum voltage of 28V.
Note 3: Calculated based on V RAMP = 1.235V and I RAMP = 500nA.
Note 4: WDI pulses narrower than 1μs will be ignored. WDI pulses wider than 6.5μs will be recognized.
Note 5: Not production tested, guaranteed by design.
Typical Operating Characteristics
(C SWT = C SRT = 1500pF, T A = +25°C, unless otherwise noted.)
RESET TIMEOUT PERIOD
vs. C SRT
WATCHDOG TIMEOUT PERIOD
vs. C SWT
SUPPLY CURRENT
vs. SUPPLY VOLTAGE
10,000
I RAMP = 500nA
10,000
I RAMP = 500nA
26
RESET AND ENABLE NOT
24
ASSERTED
1000
1000
22
100
10
100
20
18
16
1
0.1
10
1
14
12
10
0.1
1
10
100
1000
0.1
1
10
100
1000
0
10
20
30
40
50
C SRT (nF)
C SWT (nF)
SUPPLY VOLTAGE (V)
_______________________________________________________________________________________
3
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相关代理商/技术参数 |
参数描述 |
|---|---|
| MAX16998AAUA/V+ | 功能描述:监控电路 Watchdog Timer w/Adj Timeout Delay RoHS:否 制造商:STMicroelectronics 监测电压数: 监测电压: 欠电压阈值: 过电压阈值: 输出类型:Active Low, Open Drain 人工复位:Resettable 监视器:No Watchdog 电池备用开关:No Backup 上电复位延迟（典型值）:10 s 电源电压-最大:5.5 V 最大工作温度:+ 85 C 安装风格:SMD/SMT 封装 / 箱体:UDFN-6 封装:Reel |
| MAX16998AAUA/V+T | 功能描述:监控电路 Watchdog Timer w/Adj Timeout Delay RoHS:否 制造商:STMicroelectronics 监测电压数: 监测电压: 欠电压阈值: 过电压阈值: 输出类型:Active Low, Open Drain 人工复位:Resettable 监视器:No Watchdog 电池备用开关:No Backup 上电复位延迟（典型值）:10 s 电源电压-最大:5.5 V 最大工作温度:+ 85 C 安装风格:SMD/SMT 封装 / 箱体:UDFN-6 封装:Reel |
| MAX16998AAUA+ | 功能描述:监控电路 Watchdog Timer w/Adj Timeout Delay RoHS:否 制造商:STMicroelectronics 监测电压数: 监测电压: 欠电压阈值: 过电压阈值: 输出类型:Active Low, Open Drain 人工复位:Resettable 监视器:No Watchdog 电池备用开关:No Backup 上电复位延迟（典型值）:10 s 电源电压-最大:5.5 V 最大工作温度:+ 85 C 安装风格:SMD/SMT 封装 / 箱体:UDFN-6 封装:Reel |
| MAX16998AAUA+T | 功能描述:监控电路 Watchdog Timer w/Adj Timeout Delay RoHS:否 制造商:STMicroelectronics 监测电压数: 监测电压: 欠电压阈值: 过电压阈值: 输出类型:Active Low, Open Drain 人工复位:Resettable 监视器:No Watchdog 电池备用开关:No Backup 上电复位延迟（典型值）:10 s 电源电压-最大:5.5 V 最大工作温度:+ 85 C 安装风格:SMD/SMT 封装 / 箱体:UDFN-6 封装:Reel |
| MAX16998BAUA/V+ | 功能描述:监控电路 Watchdog Timer w/Adj Timeout Delay RoHS:否 制造商:STMicroelectronics 监测电压数: 监测电压: 欠电压阈值: 过电压阈值: 输出类型:Active Low, Open Drain 人工复位:Resettable 监视器:No Watchdog 电池备用开关:No Backup 上电复位延迟（典型值）:10 s 电源电压-最大:5.5 V 最大工作温度:+ 85 C 安装风格:SMD/SMT 封装 / 箱体:UDFN-6 封装:Reel |
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