(Hong Kong)
Product Summary
The HC1-55564-5 is a half duplex modulator/demodulator CMOS intergrated circuit used to convert voice signal sintoserial NRZ digital data and toreconvert that data intovoice.The conver-sion is by deltamodulation,using the Continuously Variable Slope (CVSD) method of modulation/demodulation. The applications of the HC1-55564-5 are (1)Voice Transmission Over Data Channels(Modems); (2)Voice/Data Multiplexing (Pair Gain); (3)Voice Encryption/Scrambling; (4)Voice mail; (5)Audio Manipulations: DelayLines,Time Compression, Echo Generation/Suppression, Special Effects, etc.; (6)Pagers/Satellites; (7)Data Acquisition Systems; (8)VoiceI/O for Digital Systems and Speech Synthesis Requiring Small Size,Low Weight, and Ease of Reprogrammability; (9)Related Literature-AN607, Delta Modulation for Voice Transmission.
Parametrics
HC1-55564-5 absolute maximum ratings: (1)Voltage at Any Pin: GND -0.3V to VDD 0.3V; (2)Maximum VDD Voltage: 7.0V; (3)Junction Temperature: 175oC; (4)Temperature Range: -55oC to 1250C; (5)Operating VDD: 4.5V to 6.0V; (6)Maximum Junction Temperature (Plastic Package): 150oC; (7)Maximum Storage Temperature Range: -65oC to 150oC; (8)Maximum Lead Temperature (Soldering 10s): 300oC.
Features
HC1-55564-5 features: (1)All Digital; (2)Requires Few External Parts; (3)Low Power Drain: 1.5mW Typical From Single 4.5V To 6V Supply; (4)Time Constants Determined by Clock Frequency; No Calibration or Drift Problems: Automatic Offset Adjustment; (5)Half Duplex Operation Under Digital Control; (6)Filter Reset Under Digital Control; (7)Automatic Overload Recovery; (8)Automatic “Quiet” Pattern Generation; (9)AGC Control Signal Available.
Diagrams
