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L3936A

Features: SPEECH CIRCUIT· 2 TO 4 WIRES CONVERSION· PRESENT THE PROPERDC PATH FOR THE LINE CURRENT AND THE FLEXIBILITY TO ADJUST IT AND ALLOW PARALLEL PHONE OPERATION· PROVIDES SUPPLY WITH LIMITED CURRENT FOR EXTERNAL CIRCUITRY· SYMMETRICAL HIGH IMPEDANCE MICROPHONE INPUTS SUITABLE FOR DYNAMIC ELEC...

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SeekIC No. : 004389116 Detail

L3936A: Features: SPEECH CIRCUIT· 2 TO 4 WIRES CONVERSION· PRESENT THE PROPERDC PATH FOR THE LINE CURRENT AND THE FLEXIBILITY TO ADJUST IT AND ALLOW PARALLEL PHONE OPERATION· PROVIDES SUPPLY WITH LIMITED CU...

L3936A Data Sheet

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Part Number:
L3936A
Supply Ability:
5000

Price Break

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

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Upload time: 2024/11/23

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Product Details

Description



Features:

SPEECH CIRCUIT
· 2 TO 4 WIRES CONVERSION
· PRESENT THE PROPERDC PATH FOR THE LINE CURRENT AND THE FLEXIBILITY TO ADJUST IT AND ALLOW PARALLEL PHONE OPERATION
· PROVIDES SUPPLY WITH LIMITED CURRENT FOR EXTERNAL CIRCUITRY
· SYMMETRICAL HIGH IMPEDANCE MICROPHONE
   INPUTS SUITABLE FOR DYNAMIC
   ELECTRET OR PIEZOELECTRIC
   TRANSDUCER
· ASYMMETRICAL EARPHONE OUTPUT SUITABLE FOR DYNAMIC TRANSDUCER
· LINE LOSS COMPENSATION
· INTERNAL MUTING TO DISABLE SPEECH DURING DIALING
· LIGHTED DIAL LED CONSUMING 25% OF LINE CURRENT
DIALER CIRCUIT
· 32 DIGITS FOR LAST NUMBER REDIAL BUFFER
· 18 DIGITS FOR 13 MEMORY REDIAL
· ALLOW MIXED MODE DIALING IN EITHER TONE OR PULSE MODE
· PACIFIER TONE PROVIDES AUDIBLE INDICATION OF VALID KEY PRESSED IN A BUZZER OR/AND IN THE EARPHONE
· TIMED PABX PAUSE
· FLASH INITIATES TIMED BREAK:
  MASK OPTIONS WITH 585ms,300ms,100ms.
· CONTINUOUS TONE FOR EACH DIGIT UNTIL KEY RELEASE
· USES INEXPENSIVE 3.579545MHz CERAMIC RESONATOR
· POWERED FROM TELEPHONE LINE, LOW OPERATING VOLTAGE FOR LONG LOOP APPLICATION


Pinout

Connection Diagram


Specifications

Symbol Parameter
Value
Unit
VIN Positive Line Voltage Continuous
12
V
ILN Line Current
140
mA
VDD Logic Voltage
7.0
V
VI Maximum Voltage on Any Pin
GND(-0.3) VDD(+0.3)
V
Tamb Operating Temperature Range
-25 to +75
Tstg Storage Temperature
-40 to 25
Ptot Total Power Dissipation
700
mW



Description

L3936A consists of the speech and the dialer. L3936A provides the DC line interface circuit that terminates the telephone line, analog amplifier for speech transmission and necessary signals for either DTMF or loop disconnect (pulse) dialing.




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