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IL91531

Features: · 4-bit parallel data input from microcomputer· TTL compatible inputs and outputs· Uses TV crystal standard (3.58 MHz) to derive all frequencies, providing high accuracy and stability· Operating voltage: 2.5 to 5.5 Volts· Selectable M/B ratio· 10 PPS dial rate· DTMF signaling of digits 0...

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SeekIC No. : 004374109 Detail

IL91531: Features: · 4-bit parallel data input from microcomputer· TTL compatible inputs and outputs· Uses TV crystal standard (3.58 MHz) to derive all frequencies, providing high accuracy and stability· Ope...

IL91531 Data Sheet

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Part Number:
IL91531
Supply Ability:
5000

Price Break

  • Qty
  • 1~5000
  • Unit Price
  • Negotiable
  • Processing time
  • 15 Days
Total Cost: $ 0.00

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Product Details

Description



Features:

·  4-bit parallel data input from microcomputer
·  TTL compatible inputs and outputs
·  Uses TV crystal standard (3.58 MHz) to derive all frequencies, providing high accuracy and stability
·  Operating voltage: 2.5 to 5.5 Volts
·  Selectable M/B ratio
·  10 PPS dial rate
·  DTMF signaling of digits 0 9, *, #, A, B, C, and D
·  Pulse signaling of 0 ~ 9, *, #, and A
·  High group tone pre-emphasis: 2 dB
·  Low total harmonic distortion in DTMF signaling


Pinout

Connection Diagram


Description

The IL91531 provides a 4-bit data input and a handshaking signal to serve as microcomputer interfaces. Under microcomputer control the IL91531 generates both a DTMF signal and a pulse output for telephone dialing. All necessary dual-tone frequencies and dial pulse outputs are derived from the widely used TV crystal standard, providing high accuracy and stability.

The required sinusoidal waveform for individual tones is digitally synthesized on the chip, resulting in a waveform with very low total harmonic distortion.




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