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EM91220

Features: • Tone/Pulse switchable.• Wide operating voltage from 2.0 V to 5.5 V.• Low operating current, 0.15 mA (Pulse) and 0.3 mA (Tone) typically.• Adding resistor on keyboard scan pin that can select many telephone specifications, such as : Pulse rate, M/B ratio, Flash t...

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SeekIC No. : 004336131 Detail

EM91220: Features: • Tone/Pulse switchable.• Wide operating voltage from 2.0 V to 5.5 V.• Low operating current, 0.15 mA (Pulse) and 0.3 mA (Tone) typically.• Adding resistor on keybo...

EM91220 Data Sheet

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Part Number:
EM91220
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:

• Tone/Pulse switchable.
• Wide operating voltage from 2.0 V to 5.5 V.
• Low operating current, 0.15 mA (Pulse) and 0.3 mA (Tone) typically.
• Adding resistor on keyboard scan pin that can select many telephone specifications, such as : Pulse rate,
    M/B ratio, Flash time, Pause time, P-T wait time and keyboard type.
• SDO function supports LCD driver and voice synthesizer to indicate dialing numbers.
• Handfree function provides on-hook dialing and speakerphone application.
• 20-set three touch repertory memory, each one can store data up to 16 digits.
• A 32-digit LNB (last number) redial memory.
• A 32-digit SAVE redial memory.
• Keytone function provides rapidly keying recognition.
• Pulse mute function supports pulse dialing application.
• Using 3.579545 MHz crystal or ceramic resonator.
• Package forms: PDIP, skinny.


Pinout

Connection Diagram  Connection Diagram


Specifications

Items
Sym.
Ratings
Unit
Power supply voltage VDD 6.0 Vdc
V
Input voltage range VIN VSS-0.3V ~ VDD+0.3V
V
Operating temperature TOPR 0~ +50
°C
Storage temperature TSTO -55 ~ 125
°C
Power consumption TD 500
mW



Description

The EM91220 is a series of tone/pulse switchable dialers that is composed of T/P dialer and T/P dialer with 20-set memories . The EM91220 series provides necessary functions of telephone set for application in any environment, such as Pulse dialing, Tone (DTMF) dialing, Handfree dialing, keying tone , mute and pulse mute functions. Beside this, SDO (Serial Data Output) functions is provided in advance version that is designed to drive LCD driver and voice synthesizer. In this application, the dialing numbers can be displayed on LCD screen with EM32100 ( or EM32116 ).




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