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M-993 Datasheet, PDF (1/6 Pages) Clare, Inc. – Region 1 MF Tone Generator
Features
• Generates standard CCITT R1 MF tones
• Digital input control
• Linear (analog) output
• Power output capable of driving standard line
• 14-pin DIP
• Single 5-Volt supply
• Inexpensive 3.58 MHz time base
Applications
• Telephone systems
• Test equipment
M-993
Region 1 MF Tone Generator
Description
The M-993 is a monolithic CMOS integrated circuit
designed to generate multifrequency (MF) tone pairs
for use in trunk signaling. The tones generated con-
form to CCITT R1 signal recommendations and to
AT&T MF standards. The M-993 permits design engi-
neers to implement a highly accurate MF sender with
a minimum of space, power, and added components.
The accuracy of the tone frequencies is assured
through use of an easily obtained 3.58 MHz color burst
crystal or an external 3.58 MHz clock source.
Ordering Information
Part #
M-993
Description
14-pin plastic DIP
Pin Diagram
Block Diagram
DS-M993-R1
www.clare.com
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