v.23 Compatible Modem

The MX604 is a low voltage, low power CMOS device, used for the reception or transmission of asynchronous
1200bps data and full-duplex 75bps back channel data in accordance with CCITT V.23 and ETSI
specifications.
This device provides an optional Tx and Rx data retiming function which can eliminate, based on user preference, the need for an external UART when operating at 1200bps. The device can disable the back channel or be operated so only the mark or space tone is produced. The optional line equalizer is incorporated into the receive path and is controlled by an external logic level.

FEATURES
 1200bps forward, 75bps back channels
 Conforms to relevant sections of v.23 and ETSI specifications
 Line Equalization
 1200bps Data Retiming Facility can eliminate external UART
 Low Voltage Operation (3.3 to 5.0V)

APPLICATIONS
Low Power Operation
1mA typ. @ 3.3V Operating Mode
1A typ. Zero-Power Mode
Standard 3.58Mhz Xtal/Clock
Telephone Telemetry System Applications