General Description

The HT9320 series tone/pulse dialers are CMOS LSI for telecommunication systems. They are designed to meet various dialing specifications through resistor option matrix.

Features

Universal specification

Operating voltag0e: 2.0V~5.5V

Low standby current

Lowmemoryretentioncurrent:0.1A(typ.)

Tone/pulse switchable

Interface with LCD driver

32 digits for redialing

32 digits for the SA memory dialing

One-key redialing

Pause and PT key for PBX

3.58MHz crystal or ceramic resonator

Hand-free control

Hold-line control

Pause, PT can be saved for redialing

On-hook store function

Keytone function

Lock function

Resistor options

  M/B ratio

  Flash function and flash time

  Pause and PT duration

  Pulse number

  Inter-digit pause time for 10pps

Memory number: 22 memories

HT9320A/B/H/K/L-X: 28-pin DIP package

HT9320C: 22-pin SKDIP package