Product Summary
The MC145442P is a single-chip 300-baud modem.
Parametrics
MC145442P absolute maximum ratings: (1)Supply voltage, VDD: -0.5 to +7.0V; (2)DC input voltage, Vin: -0.5 to VDD +0.5V; (3)DC output voltage, Vout: -0.5 to VDD +0.5V; (4)Clamp diode current, per pin, IIK, IOK: ±20mA; (5)DC output current, per Pin, Iout: ±28mA.
Features
MC145442P features: (1)Low-band and high-band band-pass filters on-chip; (2)Simplex, half-duplex, and full-duplex operation; (3)Originate and answer mode; (4)Analog loopback configuration for self test; (5)Hybrid network function on-chip; (6)Carrier detect circuit on-chip; (7)Adjustable transmit level and CD play timing; (8)On-chip crystal ocsillator; (9)Internal Mid-supply generator; (10)Power-down mode; (11)Pin compatible with MM74HC943; (12)Capable of driving-9dBm into a 600Ω load.
Diagrams

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(China (Mainland))











