MX623 Datasheet PDF

CML MX623

The MX623 is a low-power decoding integrated circuit that measures the frequency of telephone system call progress tones. With progress signals input from the telephone line, this single-chip product is programmed to recognize up to thirteen of the World's most commonly used call-progress frequencies, analyze signal quality, and present the measured result as a 4-bit parallel data word at the tri-state Data Output. This information can then be used in simple or complex applications to control telephone operations.

Part No.	MX623
Datasheet	MX623 Download
Manufacturer	CML
Description	Line-Powered Call Progress Tone Detector
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APPLICATIONS

● Low-Power Requirement (600µA at 3.3 VoltsTYP) for Line-Powered

APPLICATIONS

SIGNAL IN CHIP SELECT LIMITER DIGITAL FILTER XTAL/CLOCK XTAL HOLD PURS XTAL/CLOCK Clocks OSCILLATOR CONTROL CIRCUITRY VDD MEASUREMENT AND DECODE VSS Clocks TIMER DATA CHANGE OUTPUT LATCHES DATA OUTPUTS Q0 Q1 Q2 Q3 IRQ AVAILABLE PACKAGES MX623P 16-pin PDIP Using the parallel information from the MX623, the host system, can recognize such call progress information as: ‘Dial’, ‘Busy’, ‘Number Unobtainable’, ‘Ringing’ and Fax/Modem system signals. The data output will require a software format that can analyze the frequency information from the MX623. Requiring only a single 3.0[MIN] volt power supply, the MX623 may be line-powered and will operate under simple logic or system µProcessor control using the 'Data-Change, 'Hold' and 'Chip-Select' functions. The MX623, whose small size and low power consumption makes it ideal for remote applications, requires a 3.579545MHz telephone system clock or Xtal input, is available in a 16-pin PDIP. © 1997 MX●COM Inc.