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SCT1555 - PRECISION SINGLE CELL TIMER

General Description

These devices are precision timing circuits for generation of accurate time delays or oscillation.

Advanced circuit design means that these devices can operate from a single battery cell with the minimum of quiescent current.

Key Features

  • 0.9V supply operating voltage guaranteed Pin connections comparable with 555 series timers Very low quiescent current 74 µA SO8 and DIL8 packages Operating temperature range compatible with battery technologies.

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Other Datasheets by Zetex (now Diodes Incorporated)

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The following content is an automatically extracted verbatim text from the original manufacturer datasheet and is provided for reference purposes only.

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PRECISION SINGLE CELL TIMER ISSUE 2 - MAY 1998 DEVICE DESCRIPTION These devices are precision timing circuits for generation of accurate time delays or oscillation. Advanced circuit design means that these devices can operate from a single battery cell with the minimum of quiescent current. In monostable mode time delays are controlled by a single resistor and capacitor network. In astable mode the frequency and du t y cy c l e c a n be a c c u r a t e l y an d independently controlled with two external resistors and one capacitor. The threshold and trigger levels are normally set as a proportion of VCC by internal resistors. These levels can be programmed by the use of the control input pin.