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HT9170B - Holtek

Description: DTMF Receiver, DIP-18

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HT9170B - Holtek - PCB symbol
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PCB Footprints
HT9170B - Holtek PCB footprint - Dual-In-Line Packages - Dual-In-Line Packages - 18-pin DIP (300mil)
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3D Models
HT9170B - Holtek - 3D model - Dual-In-Line Packages - 18-pin DIP (300mil)
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HT9170B Details

  • Manufacturer Part Number:

    HT9170B

  • Part Life Cycle Code:

    Obsolete

  • Package Description:

    DIP-18

  • HTS Code:

    8542.39.00.01

  • Manufacturer:

    Holtek Semiconductor Inc

  • YTEOL:

    0

  • JESD-30 Code:

    R-PDIP-T18

  • Length:

    22.86 mm

  • Number of Functions:

    1

  • Number of Terminals:

    18

  • Operating Temperature-Max:

    70 °C

  • Operating Temperature-Min:

    -20 °C

  • Package Body Material:

    PLASTIC/EPOXY

  • Package Code:

    DIP

  • Package Equivalence Code:

    DIP18,.3

  • Package Shape:

    RECTANGULAR

  • Package Style:

    IN-LINE

  • Qualification Status:

    Not Qualified

  • Supply Current-Max:

    7 mA

  • Supply Voltage-Nom:

    5 V

  • Surface Mount:

    NO

  • Technology:

    CMOS

  • Telecom IC Type:

    DTMF SIGNALING CIRCUIT

  • Temperature Grade:

    COMMERCIAL

  • Terminal Form:

    THROUGH-HOLE

  • Terminal Pitch:

    2.54 mm

  • Terminal Position:

    DUAL

  • Width:

    7.62 mm

HT9170B Frequently Asked Questions (FAQs)

  • The recommended operating voltage range for the HT9170B is 2.4V to 5.5V, with a typical voltage of 3.3V or 5V.
  • The HT9170B can be configured for different microphone types by adjusting the gain setting and the bias voltage. The datasheet provides a table to select the appropriate gain setting and bias voltage for different microphone types.
  • The maximum input signal amplitude that the HT9170B can handle is 2.5Vpp (peak-to-peak) for a 3.3V supply voltage and 3.5Vpp for a 5V supply voltage.
  • To reduce noise and hum in the audio signal, it is recommended to use a decoupling capacitor between the VCC and GND pins, and to keep the analog and digital grounds separate. Additionally, using a shielded cable for the microphone connection can also help to reduce noise and hum.
  • Yes, the HT9170B can be used in a stereo audio application by using two devices, one for the left channel and one for the right channel. The datasheet provides an example circuit diagram for a stereo audio application.

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