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TSC73M223 Datasheet(PDF) 1 Page - TDK Electronics |
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TSC73M223 Datasheet(HTML) 1 Page - TDK Electronics |
1 / 6 page 73M223 1200 Baud FSK Modem February 1998 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. FEATURES • 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 OSC2 OSC 13 14 TXD 12 7(67 TEST 7; 7 16 15 PHASE COHERENT WAVE SYNTHESIZER PROGRAMMABLE DIGITAL DIVIDER DIGITAL TIMING SIGNALS SYNC PHASE LOCKED LOOP TXA CLK 9 15 SYNC 6<1 7(67 TEST SLICER RXA FIL 5 2 DIGITAL DEMODULATOR DIGITAL LP FILTER DELAY TEST 7(67 11 RXD TEST 6 RANDOM SEQUENCE GENERATOR SWITCHED CAP BANDPASS FILTER 4 RXF 3 CAP 1 VDD 8 VSS |
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