TS7514 Datasheet, PDF (1/19 Pages) STMicroelectronics – PROGRAMMABLE V.23 MODEM WITH DTMF

TS7514
PROGRAMMABLE V.23 MODEM WITH DTMF
. PROGRAMMABLE MODES :
- 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
AUTOMATIC BIAS ADJUSTMENT
INTEGRATED DUPLEXER
STANDARD LOW COST CRYSTAL (3.579MHz)
TAX TONE REJECTION
POWER-UP INITIALIZATION OF REGISTERS
OPERATES FROM ±5V
CMOS
DIP24
(Plastic Package)
PLCC28
(Plastic Leaded Chip Carrier Package)
on a 4-wire line. Its programming concept makes it
the ideal component to design low-cost intelligent
modems, featuring auto dialing and auto answer-
ing. The TS7514 conforms to CCITT V.23 recom-
mendation. The chip incorporates DTMF dialing,
line monitoring, tone and dialing detection.
DESCRIPTION
The TS7514 is an FSK modem which can be
programmed for asynchronous half-duplex voice-
band communications on a 2-wireline or full duplex
ORDER CODES
Part Number
TS7514CP
TS7514CFN
Temperature Range
0 to 70^oC
0 to 70^oC
Package
DIP24
PLCC28
PIN CONNECTIONS
DIP24
MOD/DTMF
1
MC/BC
2
RTS
3
ENP
4
DGND
5
TxD
6
PRD
7
XTAL IN
8
XTAL OUT
9
DCD
10
RxD
11
ZCO
12
24
AXTL
23
WLO
22
ATO
21
V+
20
AGND
19
V-
18
RAO1
17
RAI1
16
RAI2
15
RAO2
14
RFO
13
RDI
PLCC28
ENP 5
DGND 6
TxD 7
PRD 8
N/C 9
XTAL IN 10
XTAL OUT 11
25 V+
24 AGND
23 V-
22 RAO1
21 RAI1
20 RAI2
19 N/C
November 1998
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