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XR-559 - Quad Timing Circuits

Download the XR-559 datasheet PDF. This datasheet also covers the XR-558 variant, as both devices belong to the same quad timing circuits family and are provided as variant models within a single manufacturer datasheet.

Description

The XR-558 and the XR-559 quad timing circuits contain four independent timer sections on a single monolithic chip.

Each of the timer sections on the chip are entirely independent, and each one can produce a time delay from microseconds to minutes, as set by an external R-C network.

Features

  • Four Independent Timer Sections High C.

📥 Download Datasheet

Note: The manufacturer provides a single datasheet file (XR-558-Exar.pdf) that lists specifications for multiple related part numbers.

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Full PDF Text Transcription (Reference)

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

View original datasheet text
XR-558/559 Quad Timing Circuits GENERAL DESCRIPTION The XR-558 and the XR-559 quad timing circuits contain four independent timer sections on a single monolithic chip. Each of the timer sections on the chip are entirely independent, and each one can produce a time delay from microseconds to minutes, as set by an external R-C network. Each timer has its separate trigger terminal, but all four timers in the IC package share a common reset control. Both the XR-558 and the XR-559 quad timer circuits are "edge-triggered" devices, so that each timer section can be cascaded, or connected in tandem, with other timer sections, without requiring coupling capacitors. The XR-558 is designed with open-collector outputs; each output can sink up to 100 mA.
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