L3936A, L3936AD, L393A Selling Leads, Datasheet
MFG:ST Package Cooled:DIP28 D/C:05+
L3936A, L3936AD, L393A Datasheet download
Part Number: L3936A
MFG: ST
Package Cooled: DIP28
D/C: 05+
L3936A, L3936AD, L393A
- Table of contents:
Info of L3936A
Info of L3936AD
Info of L393A
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About L3936A
PDF/DataSheet Download
Datasheet: L3936A
File Size: 213811 KB
Manufacturer: STMicro
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About L3916A
PDF/DataSheet Download
Datasheet: L3916A
File Size: 127660 KB
Manufacturer: STMICROELECTRONICS [STMicroelectronics]
Download : Click here to Download
About L3916A
PDF/DataSheet Download
Datasheet: L3916A
File Size: 127660 KB
Manufacturer: STMICROELECTRONICS [STMicroelectronics]
Download : Click here to Download
L3936A General Description
The device consists of the speech and the dialer. It 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.
L3936A Maximum Ratings
| 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 |
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
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
· 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
L3936A Connection Diagram
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