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参数资料
| 型号： | DS1238AS-5+T&R |
| 厂商： | Maxim Integrated Products |
| 文件页数： | 3/13页 |
| 文件大小： | 0K |
| 描述： | IC MICROMANAGER 5% 16-SOIC |
| 标准包装： | 1,000 |
| 系列： | MicroManager |
| 类型： | 备用电池电路 |
| 监视电压数目： | 1 |
| 输出： | 开路漏极或开路集电极 |
| 复位： | 高有效/低有效 |
| 复位超时： | 最小为 40 ms |
| 电压 - 阀值： | 4.62V |
| 工作温度： | 0°C ~ 70°C |
| 安装类型： | 表面贴装 |
| 封装/外壳： | 16-SOIC（0.295"，7.50mm 宽） |
| 供应商设备封装： | 16-SOIC W |
| 包装： | 带卷 (TR) |
DS1238A
DS1238A FUNCTIONAL BLOCK DIAGRAM Figure 1
WATCHDOG TIMER
The DS1238A provides a watchdog timer function which forces the WDS , RST, and RST signals to the
active state when the strobe input ( ST ) is not stimulated for a predetermined time period. This time period
is described below in NO TAG. The watchdog timeout period begins as soon as RST and RST are
inactive. If a high-to-low transition occurs at the ST input prior to timeout, the watchdog timer is reset
and begins to timeout again. The ST input timing is shown in NO TAG. In order to guarantee that the
watchdog timer does not timeout, a high-to-low transition on ST must occur at or less than the minimum
timeout of the watchdog as described in the AC Electrical Characteristics. If the watchdog timer is
allowed to time out, the WDS , RST, and RST outputs are driven to the active state. WDS is a latched
signal which indicates the watchdog status, and is activated as soon as the watchdog timer completes a
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相关代理商/技术参数 |
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| DS1238N | 制造商:未知厂家 制造商全称:未知厂家 功能描述:Power Supply Supervisor |
| DS1238S | 制造商:未知厂家 制造商全称:未知厂家 功能描述:Power Supply Supervisor |
| DS1238S/T&R | 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 |
| DS1238S/T&R/ | 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 |
| DS1238S+T&R | 制造商:Maxim Integrated Products 功能描述:IC MICROMAN W/FRESH 10% 16-SOIC |
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