(1PC) NTE1731, ECG1731, Integrated Circuit CMOS 10 Number Pulse Dialer

(1PC) NTE1731, ECG1731, Integrated Circuit CMOS 10 Number Pulse Dialer

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Description:
The NTE1731 is a CMOS LSI repertory dialer with ten 16–digit number memory storage in a 16–Lead DIP type package. The pulse and mute signal outputs resulting from keyboard input are like those of a pulse dialer. The NTE1731 incorporates a 64 x 10 bit RAM which is used to store the ten telephone numbers.
When used in a Public Branch Exchange (PBX) system, a Pause function is provided. This function suspends dial pulse output upon pause detection (via # key input), and resumes the output after one of the numeric keys is pressed.

Features:
  • Make Ratio: 30/40% Pin Selectable
  • Pulse Output: “0” True
  • Mute Output: “0” True
  • Stores Ten 16–digit Telephone Numbers
  • One Temporary Memory and Permanent Memory Storage of Telephone Numbers are Possible
  • Uses a CR Oscillator as a Frequency Reference
  • Line Operation Off–Hook, Battery Operation On–Hook
  • Uses Either a Standard 2–of–7 Matrix Keyboard or a Single Contact Keyboard
  • PBX Pause Storage

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