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NTE1649 fiches techniques PDF

NTE - Integrated Circuit Telephone Tone Ringer

Numéro de référence NTE1649
Description Integrated Circuit Telephone Tone Ringer
Fabricant NTE 
Logo NTE 





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NTE1649 fiche technique
NTE1648 and NTE1649
Integrated Circuit
Telephone Tone Ringer
Description:
The NTE1648 and NTE1649 are bipolar integrated circuits in an 8–Lead DIP type package designed
for telephone bell replacement.
Functions:
D Two Oscillators
D Output Amplifier
D Power Supply Control Circuit
Features:
D Designed for Telephone Bell Replacement
D Low Current Drain
D Small Size 8–Lead MINIDIP Package
D Adjustable 2–Frequency Tone
D Adjustable Warbling Rate
D Built–in Hysteresis Prevents False Triggering and Rotary Dial “CHIRPS”
D Extension Tone Ringer Modules
D Alarms or Other Altering Devices
D External Triggering or Ringer Disable (NTE1648)
D Adjustable for Reduced Supply Initiation Current (NTE1649)
Absolute Maximum Ratings: (TA = +25°C unless otherwise specified)
Supply Voltage, VCC . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30V
Power Dissipation, PD . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 400mW
Operating Temperature Range, Topr . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . –45° to +65°C
Storage Temperature Range, Tstg . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . –65° to +150°C

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