DTMF/modem/musical-tone generators

GENERAL DESCRIPTION The PCD3311C and PCD3312C are single-chip silicon gate CMOS integrated circuits. They are intended principally for use in telephone sets to provide the dual-tone multi-frequency (DTMF) combinations required for tone dialling systems. The various audio output frequencies are

文件：176.08 Kbytes 页数：28 Pages

PHI

飞利浦

DTMF/modem/musical-tone generators

GENERAL DESCRIPTION The PCD3311C and PCD3312C are single-chip silicon gate CMOS integrated circuits. They are intended principally for use in telephone sets to provide the dual-tone multi-frequency (DTMF) combinations required for tone dialling systems. The various audio output frequencies are

文件：176.08 Kbytes 页数：28 Pages

PHI

飞利浦

3.9關A, SC70-3, 30ppm/째C Drift VOLTAGE REFERENCE

文件：490.74 Kbytes 页数：18 Pages

TI

德州仪器

0.9-V to 6.5-V, Nanopower Comparator

文件：3.09108 Mbytes 页数：24 Pages

TI

德州仪器