MT88L89 Overview
The MT88L89 is a monolithic DTMF transceiver with call progress filter. It is fabricated in CMOS technology offering low power consumption and high reliability. TONE IN+ INGS OSC1 OSC2 + - m o .c U 4 t e e h S a t a .D w w w ∑ D/A Converters Row and Column Counters Transmit Data Register Status Register Data Bus Buffer Tone Burst Gating Cct.
MT88L89 Key Features
- Central office quality DTMF transmitter/ receiver Low voltage operation (2.7-3.6V) Adjustable guard time Automatic tone
