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M-959 - Dial Pulse Counter and Hook Status Monitor

Datasheet Summary

Description

The M-959 is a low-power dial pulse counter and hook status monitor.

Contained in a 14-pin package, the M-959 requires no external components except a single 3.579 MHz television color burst crystal.

Features

  • Time-guarded dial pulse counting.
  • 10 or 20 PPS dialing speeds pin selectable.
  • Tri-state data outputs.
  • Valid data output strobe.
  • Data strobe control for use in interrupt-driven environments.
  • Independent hook status monitoring.
  • Low-power CMOS construction.

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Datasheet preview – M-959

Datasheet Details

Part number M-959
Manufacturer Clare Inc.
File Size 123.16 KB
Description Dial Pulse Counter and Hook Status Monitor
Datasheet download datasheet M-959 Datasheet
Additional preview pages of the M-959 datasheet.

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Full PDF Text Transcription

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M-959 Dial Pulse Counter and Hook Status Monitor Features • Time-guarded dial pulse counting • 10 or 20 PPS dialing speeds pin selectable • Tri-state data outputs • Valid data output strobe • Data strobe control for use in interrupt-driven environments • Independent hook status monitoring • Low-power CMOS construction Description The M-959 is a low-power dial pulse counter and hook status monitor. Contained in a 14-pin package, the M-959 requires no external components except a single 3.579 MHz television color burst crystal. The M-959 is typically connected to a loop current sensing circuit, which is connected in series with the voice pair (Tip and Ring) of a telephone line.
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