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| 型号： | PCF1252-2P/F4 |
| 厂商： | NXP SEMICONDUCTORS |
| 元件分类： | 电源管理 |
| 英文描述： | 1-CHANNEL POWER SUPPLY SUPPORT CKT, PDIP8 |
| 封装： | 0.300 INCH, PLASTIC, SOT-97-1, DIP-8 |
| 文件页数： | 9/20页 |
| 文件大小： | 183K |
| 代理商： | PCF1252-2P/F4 |
Philips Semiconductors - PIP - PCF1252-X family; Threshold detector and reset generator
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Product Information
PCF1252-X family;
Threshold detector
and reset generator
Information as of 2002-08-08
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topGeneral description
The PCF1252-Xs are low-power CMOS voltage threshold detectors designed especially for supervision of
microcontroller/microprocessor systems for detection of power-on/off conditions and generation of a system
reset pulse. The PCF1252-X also provides a POWF (power fail) output which is activated at a precise
factory-programmed trip point. A system RESET output has a built-in delay with duration determined by an
external capacitor (CCT ). A second comparator (comparator 2) has been included to enable the possibility
of a second monitoring point in the system.
topFeatures
q
Very low current consumption, typically 10 A
q
10 factory programmed threshold voltages available covering trip voltages from 4.75 to 2.55 V
q
±50 mV trip point accuracy over full temperature range
q
Variable RESET delay
q
RESET pulse polarity selection
q
Defined outputs at 0.6 V (typ.)
q
Comparator for second level detection (e.g. overvoltage detection)
q
Advance warning of power fail
q
Operating temperature range -40 to +85 °C.
topApplications
file:///G|/imaging/BITTING/cpl_IMAGES/PhilipsSemi...52-Xfamily;Thresholddetectorandresetgenerator.htm (1 of 4) [Aug-28-2002 9:13:24 AM]
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相关代理商/技术参数 |
参数描述 |
|---|---|
| PCF1252-2PN | 制造商:未知厂家 制造商全称:未知厂家 功能描述:Voltage Detector |
| PCF1252-2T/F4,112 | 功能描述:监控电路 IC VOLT DETECT W/RESET 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 |
| PCF1252-2T/F4,118 | 功能描述:监控电路 4.25V UC 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 |
| PCF1252-2TD | 制造商:未知厂家 制造商全称:未知厂家 功能描述:Voltage Detector |
| PCF1252-2TD-T | 功能描述:监控电路 4.25V UC 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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