LS7503 - TONE ACTIVATED TELEPHONE LINE SWITCH CONTROLLERS
The LS7501 - LS7510 are CMOS frequency discriminator circuits designed to respond to a specific frequency TONE signa
LS7503 Features
* Circuit activated by Tone with specific Frequency and Time Duration.
* Frequency and Time Duration values are mask programmable.
* Small Signal (as low as - 30 DBM) and Digital Level Tone signals accommodated.
* On-chip active oscillator network and 32,768 Hz Cryst
