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73M223-CL Schematic ( PDF Datasheet ) - ETC

Teilenummer 73M223-CL
Beschreibung 1200 Baud FSK Modem
Hersteller ETC
Logo ETC Logo 




Gesamt 6 Seiten
73M223-CL Datasheet, Funktion
DESCRIPTION
The 73M223 modem device receives and transmits
serial and binary data over existing telephone
networks using Frequency Shift Keying (FSK). It
provides the filtering, modulation, and demodulation
to implement a serial, asynchronous data
communication channel. The 73M223 employs the
CCITT V.23 signaling frequencies of 1302 and 2097
Hz, operating at 1200 baud, and is intended for half
duplex operation over a two-line system.
The 73M223 provides a cost-effective alternative to
existing modem solutions. It is ideally suited for R.F.
data links, credit verification systems, point-of-sale
terminals, and remote process control.
CMOS technology ensures small size, low-power
consumption and enhanced reliability.
73M223
1200 Baud FSK Modem
FEATURES
February 1998
Low cost FSK Modem
1200 baud operation
CMOS switched capacitor technology
Built-in self-test feature
On-chip filtering, and
Modulation/Demodulation
Uses CCITT V.23 frequencies
On chip crystal oscillator
Low power/High reliability
Does not require a microprocessor
10 mW @ 5 V supply
16-pin plastic packages
BLOCK DIAGRAM
OSC1 13 14 OSC2
TXD
12
7(67
OSC
PROGRAMMABLE
DIGITAL
DIVIDER
DIGITAL
TIMING
SIGNALS
RXA 2
FIL 5
7(67
TEST
SLICER
DIGITAL
DEMODULATOR
RXF 4
SWITCHED CAP
BANDPASS
FILTER
TEST
PHASE
COHERENT
WAVE
SYNTHESIZER
SYNC
PHASE LOCKED
LOOP
7;
7
DIGITAL
LP
FILTER
DELAY
RANDOM
SEQUENCE
GENERATOR
7(67
TEST
3 CAP
1
VDD
8
VSS
16 TXA
15 CLK
9 SYNC
15 6<1
11 RXD
6 TEST






73M223-CL Datasheet, Funktion
73M223
1200 Baud FSK Modem
PACKAGE PIN DESIGNATIONS
(Top View)
CAUTION: Use handling procedures necessary for
a static sensitive component.
VDD
RXA
CAP
RXF
FIL
TEST
7;
VSS
1
2
3
4
5
6
7
8
16 TXA
15 CLK
14 OSC2
13 OSC1
12 TXD
11 RXD
10 6<1
9 SYNC
16-Pin DIP and
16-Lead SOL
ORDERING INFORMATION
PART DESCRIPTION
73M223
16-Pin Plastic DIP
16-Lead SOL
ORDER NUMBER
73M223-CP
73M223-CL
PACKAGING MARK
73M223-CP
73M223-CL
No responsibility is assumed by TDK Semiconductor Corporation for use of this product nor for any infringements of patents and trademarks
or other rights of third parties resulting from its use. No license is granted under any patents, patent rights or trademarks of TDK
Semiconductor Corporation and the company reserves the right to make changes in specifications at any time without notice. Accordingly, the
reader is cautioned to verify that you are referencing the most current data sheet before placing orders. To do so, see our web site at
http://www.tsc.tdk.com or contact your local TDK Semiconductor representative.
TDK Semiconductor Corp., 2642 Michelle Dr., Tustin, CA 92780, (714) 508-8800, FAX (714) 508-8877, http://www.tsc.tdk.com
©1990 TDK Semiconductor Corporation
02/23/98- rev.B
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