Description:
...TONE/PULSE SWITCHABLE DIALER WITH LCD INTERFACEAND DUAL-TONE MELODY GENERATOR1* This specification are subject to be changed without notice.... ...10.1.1997GENERAL DESCRIPTIONThe EM91401 is a series of tone/pulse switchable dialers that is composed of T/P dialer. The EM91401 seriesprovide necessary functions of telephone set for application in any environment, such as Pulse dialing, Tone... ...- 500 - PSR = 20 ppsDTMF pin: sink current IoL -0.2 - - mA Vdtmf = 0.5 VDTMF signal DC level Vdc 0.5 - 0.75 Vdd Vdd = 2.0V 5.5VDTMF signal: ac level Vdtmf 142 160 180 mVrms Row group...