PCF1252-1 - NXP

PCF1252-1 Threshold detector and reset generator

plastic dual in-line package; 8 leads (300 mil) PCF1252-X family GENERAL 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) outp.

Features

• Very low current consumption, typically 10 µA
• 10 factory programmed threshold voltages available covering trip voltages from 4.75 to 2.55 V
• ±50 mV trip point accuracy over full temperature range
• Variable RESET delay
• RESET pulse polarity selection
• Defined outputs at 0.6 V (typ.)
• Comparator for second level detection (e.g. overvoltage detection)
• Advance warning of power fail
• Operating temperature range −40 to +85 °C. ORDERING INFORMATION PACKAGE TYPE NUMBER NAME PCF1252-XP(1) PCF1252-XT(1) Note 1. X = 0 to 9; depending on threshold voltage. BLOCK DIAGRAM DIP8 SO8 DESCRIPTION pl.