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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.

📥 Download Datasheet

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
HT9201B (HT9201A/B) Simple Tone Dialer
HT92112 Low Power OPAMP
HT92122 Low Power OPAMP
HT9231 Operation Amplifier
HT9232 Operation Amplifier

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.