MX643 Datasheet, PDF (1/12 Pages) CML Microcircuits – International Special Information Tone Identification

DATA BULLETIN
Document #20480148.001 May 1996
Preliminary Information
• International Special Information Tone Identification
• Worldwide Tone Compatibility
• - 40°C to 85°C Operating Temp
• Single and Dual Tone Detected
• Low Supply Current (0.3mA/0.5mA)
• U.S. Busy-Detect Output
• Low Supply Voltage (3.3V/5.0V)
• Voice-Detect Output
• Standard 3.58MHz Clock Input
• Wide Dynamic Range > 40dBm
• Standard 8-pin DIP Package
CLOCK /
XTAL
XTAL
CLOCK
AVAILABLE
VDD
PACKAGES
VSS
ENABLE
SIGIN
SLICER
SIGNAL
ANALYZER
CONTROL
LOGIC
DETECT1
DETECT2
DETECT3
MX643P
8-pin PDIP
MX643DW
16-pin SOIC
The MX643 is a low power, low cost device that uses signal processing techniques to detect audible tone signals
such as; Dial, Ring, Busy, Unobtainable, and other conditions found when placing a call throughout the world’s
telecom systems. The detection of these Call Progress stages is essential to the proper operation and application
of automatic calling products.
The MX643 offers identification of International Special Information Tones (SIT), reducing the time needed for
cadence verification under Obtainable conditions. In addition to the SIT feature, single and dual tone decoding
are added for better cross-system Call Progress monitoring. The MX643 offers these features in addition to the
same performance levels and features of the MX633 Call Progress Tone Detector such as; detection and
identification of U.S. Busy tones, thereby reducing the need to measure the tone cadence to identify U.S. Busy.
The decoding and indicating of speech, or other Non-Call Progress signals, thus reducing voice-falsing of Call
Progress tones and adding Voice-Answer as a connect prompt.
Available in the industry standard 8-pin DIP, the MX643 is also available in a 16-pin SOIC making it pin
compatible with the MX633DW (16-pin SOIC).
© 1996 MX•COM, INC.
Tele: 800 638 5577, 910 744 5050, Fax: [phone]