Maker : Clare Inc.
Part No. : M-993

  Datasheet PDF : M-993.pdf
  Cross Reference : M-993 Cross Reference
  Buy Component : M-993 Find Stock and Price

Shortcut : M-991  M-991-01SM  M-991-01SMTR  M-991-02SM  M-991-02SMTR  M-993 

Product Information

M-993 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 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 conform to CCITT R1 signal recommendations and to AT&T MF standards. The M-993 permits design engineers 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 1 M-993 Absolute Maximum Ratings Storage Temperature Operating Ambient Temperature VDD Any Input Voltage -55 to 125°C -25 to 70°C 7.0V VSS - 0.6 to VDD + 0.6V 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: 1. Exceeding these ratings may permanently damage the M-993. Specifications Parameter VDD Current Drain, IDD VREF PIN: Voltage Internal Resistance from VREF to VDD, VSS Frequency Deviation External CLock: (XOUT open) VIL VIH Duty Cycle XIN, XOUT Loading: Capacitance Resistance Frequency Deviation Level Distorting Components Idle OUTDRIVE Envelope Rise Time DX, CE Pins: VIL VIH Mute Pins: VOL (ISINK = -100 µA) VOH (ISOURCE = 100 µA) Data Setup (tDSRT) Data Hold (tDH) Chip Enable Fall (tPL) Tone On Delay (tTO) Tone Off Delay (tTD) Mute Delay from Outdrive (tMO) Min 4.75 48% of VDD 3.25 -0.01 0 VDD- 0.2 40 20 -1.5 110 -35 2.5 VDD- 1.5 200 10 5 5 Typ 2.0/4.0 Max 5.25 52% of VDD 6.75 +0.01 0.2 VDD 60 10 1.5 180 -60 4 0.5 1.5 90 200 Units V mA % kΩ % V V % pF MΩ % mV dB dBm ms V V V V ns ns ns ms ms ns Notes 1 8 7 9 2 2, 3 4 5 6 10 - Power Supply and Reference Oscillator Tone Output Control Timing Unless otherwise noted, VDD - VSS = 5 VDC, Ta - 25° C Notes: 1. All DC voltages are referenced to VSS. 2. Vrms per tone, 540W load. 3. Any one frequency relative to the lowest level output tone (f<4000 Hz). 4. 0 dBm = 0.775 Vrms. 5. To 90% maximum amplitude. 6. For all supply voltages in the operating range. 7. At XOUT pin as compared to 3.579545 MHz. 8. OUTDRIVE with load >5 KW/OUTDRIVE with 540W load. 9. Crystal oscillator active. 10. Measured 90% to 10%. 2 www.clare.com Rev. 1 M-993 Pin Function Pin CE D0 - D3 D4-D5 MUTE OUTDRIVE VDD VREF VSS XIN XOUT Function Latches data and enables output (active low input). Data input pins. (See Data/Tone Selection.) Leave open. Output indicates that a signal is being generated at OUTDRIVE. Linear buffered tone output. Most positive power supply input pin. Internally generated mid-power supply voltage (output). Most negative power supply input pin. Crystal oscillator or digital clock input. Crystal oscillator output. Data/Tone Selection D3 0 0 0 0 0 0 0 0 1 1 1 1 1 1 1 D2 0 0 0 0 1 1 1 1 0 0 0 0 1 1 1 D1 0 0 1 1 0 0 1 1 0 0 1 1 0 0 1 D0 Frequency (Hz) 1 2 0 1100 1700 1 700 900 0 700 1100 1 900 1100 0 700 1300 1 900 1300 0 1100 1300 1 700 1500 0 900 1500 1 1100 1500 0 1300 1500 1 1500 1700 0 900 1700 1 1300 1700 0 700 1700 Use Key Pulse (KP) Digit 1 Digit 2 Digit 3 Digit 4 Digit 5 Digit 6 Digit 7 Digit 8 Digit 9 Digit 0 ST ST1 ST2 ST3 Power-On Reset Circuit A typical control sequence for the M-993 is: (1) set data lines Selection for data settings for a particular tone pair output).to d...

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