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參數資料
| 型號： | 935154630112 |
| 廠商： | NXP SEMICONDUCTORS |
| 元件分類： | 電源管理 |
| 英文描述： | 1-CHANNEL POWER SUPPLY SUPPORT CKT, PDSO8 |
| 封裝： | 3.90 MM, PLASTIC, SOT-96-1, SO-8 |
| 文件頁數： | 9/20頁 |
| 文件大小： | 183K |
| 代理商： | 935154630112 |
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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