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参数资料
| 型号： | DS1830U+T&R |
| 厂商： | Maxim Integrated Products |
| 文件页数： | 3/7页 |
| 文件大小： | 0K |
| 描述： | IC SEQUENCER RESET PB 5V 8-USOP |
| 产品培训模块： | Lead (SnPb) Finish for COTS Obsolescence Mitigation Program |
| 标准包装： | 3,000 |
| 类型： | 序列发生器 |
| 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： | 5V |
| 工作温度： | -40°C ~ 85°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： | 带卷 (TR) |
D1830/A
OPERATION — PUSHBUTTON RESET
The DS1830 provides a pushbutton switch for manual reset control. When any of the DS1830/A resets
are not active (low) a reset cycle can be initiated by a pushbutton reset. The pushbutton reset is generated
by pulling the PBRST pin low for at least 1ms. When the push- button is held low all resets are forced
active. The reset will remain active until the pushbutton input is released and then will start a sequenced
time-out based on the condition of the TD input. The Pushbutton input is pulled high through an internal
40k W pull-up resistor and debounced via internal circuitry. See Figure 2 for an application example and
Figure 3 for the timing diagram.
PUSHBUTTON RESET Figure 2
TIMING DIAGRAM — PUSHBUTTON RESET Figure 3
OPERATION — TIME DELAY SELECT
The DS1830 provides an input to select three time delay characteristics for the reset outputs. The TD
input has 3 states high (V CC ), low (ground) and no connect (N.C.). Table 2 details the minimum timing
based on the state of the TD input. If the TD input is connected to ground; RST1 will have a minimum
time delay of 10 ms after V CC is in tolerance. If the TD input is floated; RST1 will have a minimum time
delay of 20 ms after V CC is in tolerance. If the TD input is connected to V CC , RST1 will have a minimum
time delay of 50 ms after V CC is in tolerance. An oscillator and clock chain generate the reset timing with
e ach time d elay based on the same device oscillator. The time delay for RST2 will be 5 times as long as
RST1 and RST3 will be 10 times the duration of RST1 .
TD CONTROL MINIMUM RESET TIMING Table 2
TD
TD = GND
TD = N.C.
TD = V CC
T RST1
10ms
20ms
50ms
T RST2
50ms
100ms
250ms
T RST3
100ms
200ms
500ms
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相关代理商/技术参数 |
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| DS1831 | 功能描述:监控电路 3.3/5V Multisupply MicroMonitor 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 |
| DS1831/A/B | 制造商:未知厂家 制造商全称:未知厂家 功能描述:Multisupply Micromonitor |
| DS1831+ | 功能描述:监控电路 3.3/5V Multisupply MicroMonitor 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 |
| DS1831A | 功能描述:监控电路 3.3/5V Multisupply MicroMonitor 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 |
| DS1831A+ | 功能描述:监控电路 3.3/5V Multisupply MicroMonitor 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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