XR·14412
FSK Modem System
GENERAL DESCRIPTION
The XR-14412 contains all the necessary circuitry to construct a complete FSK modulator/demodulator (MODEM) system. Included is circuitry for pinprogrammable frequency bands, either U.S. or foreign (CCITI) standards for low-speed MODEMS. The XR-14412 provides T2L-compatible inputs and outputs. Included in the XR-14412 are features for self-testing and an echo suppression tone generator. The XR-14412 utilizes complementary MOS technology for low-powe.
FSK Modem System
XR·14412
FSK Modem System
GENERAL DESCRIPTION
The XR-14412 contains all the necessary circuitry to construct a complete FSK modulator/demodulator (MODEM) system. Included is circuitry for pinprogrammable frequency bands, either U.S. or foreign (CCITI) standards for low-speed MODEMS. The XR-14412 provides T2L-compatible inputs and outputs. Included in the XR-14412 are features for self-testing and an echo suppression tone generator. The XR-14412 utilizes complementary MOS technology for low-power operation.
FUNCTIONAL BLOCK DIAGRAM
Voo TTLD
TYPE
ECHO
FEATURES
Simplex, Half-Duplex, and Full-Duplex Operation Crystal Controlled Answer or Originate Modes Single Supply Operation Self-test Mode Selectable Data Rates-300, or 600 bps T2L- or CMOS-Compatible Inputs and Outputs Echo Suppressor Disable Tone Generator U.S. or Foreign (CCITT) Compatible
ORDERING INFORMATION
Tx EN Tx DATA MODE
TXCAR
APPLICATIONS
Stand-Alone MODEMS Remote Terminals Acoustical Couplers Built-in MODEMS
Part Num.