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参数资料
| 型号： | MAX814LCSA+T |
| 厂商： | Maxim Integrated Products |
| 文件页数： | 7/16页 |
| 文件大小： | 0K |
| 描述： | IC SUPERVISOR MPU LP 8SOIC |
| 产品培训模块： | Lead (SnPb) Finish for COTS Obsolescence Mitigation Program |
| 标准包装： | 2,500 |
| 类型： | 简单复位/加电复位 |
| 监视电压数目： | 1 |
| 输出： | 推挽式，推挽式 |
| 复位： | 高有效/低有效 |
| 复位超时： | 最小为 140 ms |
| 电压 - 阀值： | 4.7V |
| 工作温度： | 0°C ~ 70°C |
| 安装类型： | 表面贴装 |
| 封装/外壳： | 8-SOIC（0.154"，3.90mm 宽） |
| 供应商设备封装： | 8-SOIC |
| 包装： | 带卷 (TR) |
±1% Accuracy, Low-Power, +3V and +5V
μP Supervisory Circuits
______________________________________________________________Pin Description
MAX814
PIN
MAX815
MAX816
NAME
FUNCTION
Manual-Reset Input. Triggers a reset when pulled below 1.10V. This active-
1
1
1
MR
low input has an internal 150μA pullup current to V CC , and can be driven
with CMOS logic or shorted to GND with a switch or transistor.
Positive Power-Supply Input. When V CC is below the reset threshold
2
—
2
—
—
2
V CC
voltage*, RESET is low, and remains low for a minimum of 140ms after
it rises above the threshold.
Positive Power-Supply Input. On the MAX816, RESET is controlled by
RESET IN, not V CC .
3
3
3
GND
Ground
Power-Fail Input. The PFI threshold voltage is 1.70V on the MAX816 and on
4
4
4
PFI
MAX814/MAX815 parts with the T suffix. It is 2.50V on MAX814/MAX815
parts with K, L, and N suffixes. Connect PFI to GND or V CC when not used.
5
5
5
PFO
Power-Fail Output. When PFI is below its threshold, PFO is low;
otherwise it is high.
Watchdog CMOS Input. If WDI remains high or low for more than 1.56s, the
—
6
—
WDI
watchdog timer times out, and WDO goes low. The timer is reset to
zero on each WDI transition.
Low-Line Output. Normally high, LOW LINE goes low when V CC falls 60mV
6
—
—
LOW LINE above the reset threshold. It returns high as soon as V CC rises above the
low-line threshold.
Reset Comparator Input. Reference is 1.70V. When RESET IN is below
—
—
6
RESET IN
1.70V, RESET is low, and remains low for a minimum of 140ms after it rises
above the reference.
7
7
7
RESET
Reset Output. Normally high, active low. Controlled by MR and reset
comparator.
Watchdog Output. Normally high, WDO goes low whenever the V CC reset
—
8
—
WDO
threshold comparator input voltage is low or when the watchdog timer
times out. There is no appreciable delay going either direction when the
V CC threshold comparator toggles.
8
—
8
RESET
Reset Output. Active high. The inverse of RESET.
*Reset Threshold Voltage is determined by part number suffix: K = 4.80V, L = 4.70V, N = 4.55V, T = 3.03V.
_______________Detailed Description
The MAX814/MAX815/MAX816 are high-accuracy, low-
power microprocessor (μP) supervisory circuits. They
have μP-reset, watchdog-timer, and power-fail func-
tions. Typical applications illustrating their similarities
and differences are shown in Figures 1, 2, and 3.
Figures 4, 5, and 6 show the block diagrams of these
parts.
_______________________________________________________________________________________
7
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相关代理商/技术参数 |
参数描述 |
|---|---|
| MAX814LEPA | 功能描述:监控电路 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 |
| MAX814LEPA+ | 功能描述:监控电路 3V & 5V uPower Supervisor 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 |
| MAX814LESA | 功能描述:监控电路 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 |
| MAX814LESA+ | 功能描述:监控电路 3V & 5V uPower Supervisor 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 |
| MAX814LESA+T | 功能描述:监控电路 3V & 5V uPower Supervisor 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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