HT9201A Datasheet, PDF (1/7 Pages) Holtek Semiconductor Inc – Simple Tone Dialer

HT9201A/B
Simple Tone Dialer
Features
Patent Number: 113235(R.O.C.), 5424740(U.S.A.)
• _{Operating voltage: 2.0V~5.5V}
• _{Low standby current}
• _{4×4 keyboard matrix}
• _{3.58MHz crystal or ceramic resonator}
• _{Four flash key times selectable for the}
HT9201B
General Description
The HT9201A/B tone dialers are CMOS LSIs
designed for telecommunication systems. The
HT9201A is for mute output whereas the
HT9201B is for flash output. Both dialers pro-
vide good performance for regular DTMF dial-
ing with low distortion output and minimal ex-
ternal components.
Selection Table
Function
MUT E
Item
HT9201A √
HT9201B —
XMUT E
√
√
F1,F2,F3,F4
Flash T ime(ms)
—
A,B,C,D
Package
DT MF Output
√
16 DIP
600/300/200/90
—
16 DIP
Pin Assignment
1
3rd Dec ’97