NTE1691 Datasheet Integrated Circuit Telephone Pulse Dialer

Manufacturer: NTE Electronics (defunct)

Overview: NTE1691 & NTE1692 Integrated Circuit Telephone Pulse Dialer w/Redial.

Datasheet Details

Part number	NTE1691
Manufacturer	NTE Electronics (defunct)
File Size	28.10 KB
Description	Integrated Circuit Telephone Pulse Dialer
Datasheet	NTE1691_NTEElectronics.pdf

: The NTE1691 and NTE1692 are monolithic CMOS integrated circuits in an 18–Lead DIP type package that provide all the

required for implementing a pulse dialer with redial. Functions: D Mute Output Logic “0” D Pulse Output Logic “0” D RC Oscillation for Reference Frequency D Designed to Operate Directly from the Telephone Line D Used CMOS Technology for Low Voltage, Low Power Operation D Power Up Clear Circuitry D NTE1691 Pin2: VREF D NTE1692 Pin2: Tone Out Features: D Uses Either a Standard 2 of 7 Matrix Keyboard with Negative True Common or the Inexpensive Form A.
Type Keyboard D Make/Break Ratio Can Be.

Part Number	Description
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NTE1690	Integrated Circuit Telephone DTMF Dialer
NTE1692	Integrated Circuit Telephone Pulse Dialer
NTE1693	Integrated Circuit Telephone Pulse Dialer
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NTE16002	Silicon NPN Transistor
NTE16003	Silicon NPN Transistor