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M-984-02S Dataheets PDF



Part Number M-984-02S
Manufacturers Clare Inc.
Logo Clare  Inc.
Description Special Information Tone Detector
Datasheet M-984-02S DatasheetM-984-02S Datasheet (PDF)

M-984-02 Special Information Tone Detector Features • Detects single-frequency tones used for error indication and call progress in telephone systems • Provides detection windows for: 400/425 Hz (Call Progress) 950 Hz (Special and error indication) 1400 Hz (Special and error indication) 1800 Hz (Special and error indication) • Separate tri-state outputs for each tone window • Inexpensive 3.58 MHz crystal time base • Auxiliary 3.58 MHz clock output • 14-pin DIP package and 16-pin SOIC package • S.

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M-984-02 Special Information Tone Detector Features • Detects single-frequency tones used for error indication and call progress in telephone systems • Provides detection windows for: 400/425 Hz (Call Progress) 950 Hz (Special and error indication) 1400 Hz (Special and error indication) 1800 Hz (Special and error indication) • Separate tri-state outputs for each tone window • Inexpensive 3.58 MHz crystal time base • Auxiliary 3.58 MHz clock output • 14-pin DIP package and 16-pin SOIC package • Single supply 3 to 5 volt (low power CMOS) • Wide dynamic range (30 dBm) Applications • • • • • • Automatic dialers Modems Telecom test equipment Telephone traffic measurement, Service evaluation Billing equipment Description The M-984-02 Special Information Tone Detector is a monolithic integrated circuit designed to provide reliable detection of many common telephone network status signals. In particular, it detects the signals known as Special Information Tones (SITs) or error tones as defined by the CCITT, and single tones often used as dial tone, audible ringing, and other general progress indications. The M-984-02 uses CMOS switched capacitor filters and a crystal time base to achieve the high stability and accuracy specified. Each tone detection window has an associated output pin, which can be placed in a high impedance state for use with time-share microcomputer bus applications. In comparison with the earlier M-984, the M-984-02 has wider acceptance bands for SIT tones to facilitate reception of tape-loop tones, lower power consumption at 5V operation, 3V operation, superior temperature performance, lower cost, and is available in DIP, SOIC, and SOIC tape and reel versions. Ordering Information Part # M-984-02P M-984-02S M-984-02T Description 14-pin plastic DIP 16-pin plastic, SOIC 16-pin SOIC, Tape and Reel Pin Diagram Block Diagram DS-M984-02-R3 www.clare.com 1 M-984-02 Absolute Maximum Ratings DC Supply Voltage Input Voltage on SIGIN Input Voltage on Any Pin (except SIGIN) Storage Temperature Range Operating Temperature Range Lead Soldering Temperature 7V VSS - 6.5V to VDD +0.3V VSS - 0.3 to VDD + 0.3V -40°C to +150°C -40°C to +85°C 260°C for 5 seconds Absolute Maximum Ratings are stress ratings. Stresses in excess of these ratings can cause permanent damage to the device. Functional operation of the device at these or any other conditions beyond those indicated in the operational sections of this data sheet is not implied. Exposure of the device to the absolute maximum ratings for an extended period may degrade the device and effect its reliability. Note: Exceeding these ratings may permanently damage the device. Specifications Parameter Operating Conditions Power VREF Signal Detection VDD Power supply noise Current drain (IDD) VREF Impedance Frequency Range Level: VDD = 5.0V Level: VDD = 3.0V Duration Bridge Time Signal to Noise Ratio Frequency Range Level: VDD = 5.0V Level: VDD = 3.0V Duration Except X358 VOL VOH Dn pins only IOZ EN pin VIL VIH Pull-up and Pulldown currents MODE = VSS /XRANGE +VSS MODE2 = VDD PD = VDD Voltage range Input impedance Input Spectrum External clock VIL connected to VIH XIN pin Duty cycle XIN, XOUT with Capacitance crystal ocs. active Internal res. X358 pin VOL VOH Duty cycle tEN (High Z to Low Z) tDE (Low Z to High Z) SIGIN pin Conditions 0.1 - 5 kHz VREF open fc = 400 Hz fc = 950, 1400, 1800 Hz ISINK = -1.0 mA ISOURCE = 1.0 mA VO = VDD, VSS VDD = 5V VDD = 2.7V VDD = 5V VDD = 2.7V VDD = 5V VDD = 2.7V f = 500 Hz XOUT open XOUT open XOUT open CL = 20 pF, ISINK = -1.0 mA CL = 20 pF, ISOURCE = 1.0 mA CL = 20 pF CL = 50 pF RL = 100 KΩ Min 2.7 48% of VDD 3.25 Note 1 -30 (24.5 mV) -33 (17.4 mV) 85 50 16 Note 1 VDD-0.5 VDD -2.0 VDD - 0.5 12.5 4 2 12.5 12.5 4 -6.5 80 VDD - 0.2 40 20 VDD - 0.5 40 - Max 5.5 20 15 52% of VDD 8.25 Note 1 0 (775 mV) -3 (173.5 mV) 15 Note 1 -40 (7.8 mV) -43 (5.5 mV) 50 0.5 1 0.5 50 20 6 100 25 10 VDD 28 0.2 60 10 0.5 60 250 250 Units V mV p-p mA V kΩ dBm dBm ms ms ms dB dBm dBm ms V V µA V V V µA µA µA µA µA µA V kΩ kHz V V % pF MΩ V V % ns ns Signal Rejection Outputs Inputs Clock Tri-state Operation Unless otherwise noted, specifications hold over VDD - VSS = 2.8V to 5.5V power supply, and TOL -40°C to +85°C. Notes: 1. See the Detector Frequency Windows table on page 4 for detection/ rejection frequencies. 2 www.clare.com Rev. 3 M-984-02 Pin Functions PIN XIN XOUT X358 ENVLP FUNCTION Crystal Connection — 3.58 MHz crystal across these pins will produce the timebase needed for proper operation of the M-984-02. An external clock signal may be fed to XIN providing the clock signal has a duty cycle of 50 ±10% and comes within 0.2 volts of the supply rails. XOUT remains unconnected when an external clock is used. A buffered output pin. A 3.58 MHz clock signal is available for use in other circuits as a timebase. Leave open when unused. The ENVLP pin is a common detection indicator for the four detect pins. Simply put, the ENVLP is a logic.


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