HT9305

HT9305/6 Series 5-Memory Tone/Pulse Dialer Features Patent Number: 64097, 86474, 113235(R.O.C.), 5424740(U.S.A.) Universal specification Operating voltage: 2.0V~5.5V Low standby current Low memory retention current: 0.1µA (Typ.) Tone/pulse switchable Interface with LCD driver 32 digits for redialing 32 digits for the SA memory dialing One-key redialing Pause and P→ T key for PBX 4×5 keyboard matrix 3.58MHz crystal or ceramic resonator Hand-free control Hold-line control Pause, P→ T can be saved for redialing Lock function Keytone function Resistor options: – M/B ratio – Flash function and flash time(86ms~600ms) – Pause and P→ T duration – Pulse number – Keyboard operated IDD lock function – Key board form General Description The HT9305/6 series tone/pulse dialers are CMOS LSIs for telecommunication systems. They are designed to meet various dialing specifications through resistor option matrix. The HT9305/6 series tone/pulse dialers are offered in four different versions. They are HT9305x/HT9306x normal version; HT9305xL/HT9305xI lock version, with keyboard-operated IDD lock function; HT9305xT keytone version; and HT9305xLT/HT9305xIT keytone/lock function version. The four versions also supply the following functions: Hold-line, Hand-free and LCD dialing number display interface, all of which are suitable for feature phone applications. 1 21st Jan ’98 Free Datasheet http://www.Datasheet4U.com HT9305/6 Series Selection Table √ √ √ ...