DTMF Decoder Chip for Answering Machines
Integrated circuit that decodes dual-tone multi-frequency signals for remote message control in telephone answering machines of heading 8521. Essential for functions like skipping messages via phone keypad. This specialized IC is under 8522.90.58.80.
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• Provide datasheet excerpts showing pinouts matching answering machine boards
Related Products under HTS 8522.90.58.80
Voicemail Tape Head Assembly
Microcassette read/write head for analog tape-based telephone answering machines, optimized for 30-minute message capacity. Designed solely for heading 8521 legacy devices. Under 8522.90.58.80.
Answering Machine LED Display Driver Board
Circuit board driving 7-segment LEDs for message counter and status on telephone answering machines. Interfaces with control CPU for heading 8521. HTS 8522.90.58.80.
Answering Machine Handset Jack Connector
RJ-11 compatible connector module for handset/message playback in telephone answering machines. Shielded for RFI suppression in heading 8521. 8522.90.58.80.
Message Counter Electromechanical Relay
Clicker relay providing audible feedback for each new message in analog answering machines of heading 8521. Custom throw angle for counter mechanism. 8522.90.58.80.
Answering Machine Chassis Wiring Harness
Custom cable assembly interconnecting PCB, transformer, and jacks in telephone answering machine chassis for heading 8521. Pre-cut lengths for compact design. 8522.90.58.80.
Answering Machine Keypad Interface Board
Board handling local control buttons (play, skip, delete) for desktop telephone answering machines. Matrix scanning for 6-button layout. 8522.90.58.80.