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HT9205A - 5-Memory/6-Memory Tone/Pulse Dialer

General Description

The HT9205 series tone/pulse dialers are CMOS LSIs for the telecommunication system.

They are designed to meet various dialing specifications through resistor options matrix.

Key Features

  • Universal specification.
  • Operating voltage: 2.0V~5.5V.
  • Low stand-by 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 contr.

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Other Datasheets by Holtek Semiconductor

Part Number Description
HT9205B 5-Memory/6-Memory Tone/Pulse Dialer
HT9205C 5-Memory/6-Memory Tone/Pulse Dialer
HT9205D 5-Memory/6-Memory Tone/Pulse Dialer
HT9205K 5-Memory/6-Memory Tone/Pulse Dialer
HT9201A (HT9201A/B) Simple Tone Dialer

Full PDF Text Transcription (Reference)

The following content is an automatically extracted verbatim text from the original manufacturer datasheet and is provided for reference purposes only.

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HT9205A/B/C/D/K 5-Memory/6-Memory Tone/Pulse Dialer Features • Universal specification • Operating voltage: 2.0V~5.5V • Low stand-by 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 • Resistor options: – M/B ratio – Flash function and flash time – Pause and P→T duration – Pulse number – Keyboard form • Memory number: – HT9205A/B/C/D: 5 memories – HT9205K: 6 memories General Description The HT9205 series tone/pulse dialers are CMOS LSIs for the telecommunication system.