U3750BM Datasheet, PDF (17/20 Pages) TEMIC Semiconductors – One Chip Telephone Circuit

TELEFUNKEN Semiconductors
U3750BM
Figure 12 Timing diagram for pulse dialing
Figure 13 Timing diagram for DTMF dialing
Rev. A1: 16.07.1996
Figure 14 Timing diagram for mixed mode dialing
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