TCM5089

The TCM5089 is designed as tone encoder CMOS ntegrated circuit which specifically to generate the dial tones used in dual-tone telephone dialing systems. It requires a sine-wave input normally supplied by a low-cost TV color-burst crystal at 3.579545MHz to generate eight different audio sinusoidal frequencies.

TCM5089 has many features. (1)Low cost TV color-burst crystal sine-wave input produces highly accurate and stable tones. (2)Device powered directly by telephone or small satteries. (3)Keyboard or electronic input capability. (4)Dual-tone and single-tone capability. (5)Minimal stardby power requirement. (6)Total harmonic distortion meets EIA standard RS-470. (7)PEP3 processing available. (8)Wide supply-voltage range. (9)Minimum parts required. (10)Single-tone production can be inhibited. (11)Auxiliary switching bipolar transistor available. And so on.

Some absolute maximum ratings TCM5089 have been concluded into several points as follow. (1)Its supply voltage Vdd would be 13.5V. (2)Its input voltage range would be from -0.3V to Vdd+0.3V. (3)Its output voltage range would be from -0.3V to Vdd+0.3V. (4)Its continuous power dissipation at 25°C free-air temperature would be 1150mW. (5)Its operating free-air temperature range would be from -30°C to 70°C. (6)Its storage temperature range would be from -55°C to 150°C. It should be noted that stresses above those listed in absolute maximum ratings may cause permanent damage to device.

Also some electrical characteristics TCM5089 are concluded as follow. (1)Its input resistance single tone input to Vss would be min 20kohms and max 100kohms. (2)Its high level output current keyboard active output would be max 2uA. (3)Low level output current keyboard active output would be min -500uA. (4)Standby power supply current would be max 200uA. (5)Its operating power supply current would be max 2mA. (6)Its quiescent tone-output power would be max -80dBm. (7)Its tone-output rise time would be typ 2.8ms and max 5ms. And so on. If you have any question or suggestion or want to know more information please contact us for TCM5089 details. Thank you!