73M223

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


Pinout




Specifications

PARAMETER	RATING
Power Supply Voltage (VDD-VSS)	14 V
Analog Input Voltage at RXA	- 0.3 to VDD V
Analog Input Voltage at RXF	- 3 to VDD V
Digital Input Voltage VSS	0.3 to VDD + 0.3 V
Storage Temperature Range	- 65 to + 150 °C
Operating Temperature Range	- 25 to + 70 °C
Lead Temperature (10 secs soldering)	260 °C

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.