The EM91420 is a series of tone/pulse switchable dialers that is composed of T/P dialer and T/P dialer with 20-set memories.
The EM91420 series provides necessary functions of telephone set for application in any environment, such as Pulse dialing, Tone (DTMF) dialing, Handfree dialing, keying tone
EM91420B Features
* Tone/Pulse switchable.
* Wide operating voltage from 2.0 V to 5.5 V.
* Low operating current, 0.15 mA (Pulse) and 0.3 mA (Tone) typically.
* Adding resistor on keyboard scan pin that can select many telephone specifications, such as : Pulse rate, M/B ratio, Flash ti
EM91420B_ELANMicroelectronicsCorp.pdf
Datasheet Details
EM91420B
ELAN Microelectronics Corp
175.49 KB
Tone/pulse switchable dialer with lcd interface and dual-tone melody generator.
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