Features: ·PROGRAMMABLEMODES : - Modem 75bps transmit, 1200bps receive - Modem 1200bps transmit, 75bps receive - DTMF dialing - Call status tone detection - Auxiliary analog transmit input - Analog test loopback PROGRAMMABLE FUNCTIONS : - Transmission level - Hysteresis and detection level - Filte...
TS7514: Features: ·PROGRAMMABLEMODES : - Modem 75bps transmit, 1200bps receive - Modem 1200bps transmit, 75bps receive - DTMF dialing - Call status tone detection - Auxiliary analog transmit input - Analog ...
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·PROGRAMMABLEMODES :
- Modem 75bps transmit, 1200bps receive
- Modem 1200bps transmit, 75bps receive
- DTMF dialing
- Call status tone detection
- Auxiliary analog transmit input
- Analog test loopback PROGRAMMABLE FUNCTIONS :
- Transmission level
- Hysteresis and detection level
- Filters (reception and transmission)
- Line monitoring and buzzer
- DTMF frequencies .
·FIXED COMPROMISE LINE EQUALIZER .
·AUTOMATICBIAS ADJUSTMENT .
·INTEGRATEDDUPLEXER .
·STANDARDLOWCOSTCRYSTAL (3.579MHz) .
·TAX TONE REJECTION .
·POWER-UP INITIALIZATIONOF REGISTERS .
·OPERATES FROM ±5V
·CMOS
Symbol |
Parameter |
Value |
Unit |
DGND |
DGND (digital ground) to AGND (analog ground) |
0.3, + 0.3 |
V |
V+ |
Supply Voltage V+ to DGND ro AGND |
0.3, + 7 |
V |
V |
Supply Voltage V- to DGND or AGND |
7, + 0.3 |
V |
VI |
Voltage at any Digital Input |
DGND - 0.3, V+ + 0.3 |
V |
Vin |
Voltage at any Analog Input |
V 0.3, V + + 0.3 |
V |
Io |
Current at any Digital Output |
20, + 20 |
mA |
Iout |
Current at any Analog Output |
10, + 10 |
mA |
Ptot |
Power Dissipation |
500 |
mW |
Top |
Operating Temperature |
0, + 70 |
|
Tstg |
Storage Temperature |
65, + 150 |
|
Tlead |
Lead Temperature (soldering, 10s) |
+ 260 |
The TS7514 is an FSK modem which can be programmed for asynchronous half-duplex voicebandcommunications ona 2-wireline or full duplex on a 4-wire line. Its programming concept makes it the ideal component to design low-cost intelligent modems, featuring auto dialing and auto answering. The TS7514 conforms to CCITT V.23 recommendation. The chip incorporates DTMF dialing, line monitoring, tone and dialing detection.