The PT2128C-C41, produced by Princeton Technology Corp (PTC), is a remote control encoder IC built using CMOS technology. Designed for diverse remote control applications, this IC encodes input data for transmission via infrared (IR) signals. It is favored for its cost-effectiveness and low power consumption. The 'C' probably indicates a specific revision or series, and 'C41' is likely a code denoting a particular configuration or set of features.

Applications

• Television (TV) remote controls
• DVD player remote controls
• Set-top box (STB) remote controls
• Audio system remote controls
• Air conditioning remote controls

Features

• CMOS Technology: Enables low power consumption and strong noise immunity.
• Multiple Key Inputs: Facilitates encoding multiple functions from key presses.
• Infrared (IR) Transmission: Employs IR light for wireless communication of control signals.
• Built-in Oscillator: Simplifies circuit design through integrated oscillator functionality.
• Customizable Encoding Codes: Supports the tailoring of encoding codes to meet specific product needs.
• Low Standby Current: Reduces power consumption during inactive periods.

Benefits

• Cost-Effective Solution: Offers a low-cost option for remote control encoding.
• Extended Battery Life: Low power consumption contributes to longer battery life in remote control devices.
• Reliable Performance: Guarantees stable operation and noise resistance thanks to CMOS technology.
• Simplified Integration: Allows for easy incorporation into remote control designs.
• Flexible Functionality: Supports customization of remote control operations as needed.

Additional Details

The PT2128C-C41 typically operates with a 3V power supply. The encoding format and the key assignments will depend on the specific application requirements. External components such as ceramic resonators or crystal oscillators are used to establish the carrier frequency of the IR signal. The output pin is connected to an IR LED, which handles the transmission of the encoded data. Commonly packaged in DIP or SOP formats, this IC enables effective and straightforward remote control functionality.