MC145574 Datasheet, PDF (149/164 Pages) Motorola, Inc – ISDN S/T-Interface Transceiver

Freescale Semiconductor, Inc.
UDLT — Universal Digital Loop Transceiver; a Motorola originated name for a voice/data transceiver circuit.
VCO — Voltage–controlled oscillator. Input is a voltage; output is a sinusoidal waveform.
VCM — Voltage–controlled multivibrator. Input is a voltage; output is a square wave.
Voice Frequency — A frequency within that part of the audio range that is used for the transmission of speech of commercial
quality (i.e., 300 – 3400 Hz).
Weighting Network — A network whose loss varies with frequency in a predetermined manner.
MOTOROLA
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