The PT2253A is a remote control encoder utilizing CMOS Technology specially designed for use with the PT2272 remote control decoder series. It encodes data and address codes into a form suitable for RF modulation. The device contains an oscillator, address/data input pins, and a transmission enable pin. It's a cost-effective solution for various remote control applications.

Applications:

• Car alarms
• Remote control toys
• Remote door controls
• Wireless security systems
• Garage door openers

Features:

• CMOS Technology
• Low power consumption
• High noise immunity
• Minimal external components
• Up to 12 address bits and 4 data bits
• Transmission enable pin for power saving
• Oscillator using a resistor

Benefits:

• Extended battery life due to low power consumption
• Reliable operation in noisy environments
• Reduced system cost due to minimal external components
• Flexible address and data configuration options
• Easy integration into existing remote control systems

Additional Details:

The PT2253A operates with a supply voltage typically between 3V and 15V. It is crucial to use appropriate encoding resistors to establish the correct frequency for transmission. The address and data inputs are typically configured using DIP switches or jumpers. The device transmits data only when the transmission enable pin is activated. It’s designed for one-way communication, working specifically with the PT2272 decoder to establish a remote control link. The oscillator frequency is determined by an external resistor. Proper selection of the resistor is critical for the encoder to operate effectively and communicate correctly with the paired decoder.

The chip's primary function is to encode the address and data information into a serial stream suitable for transmission via an RF or IR link. The decoder, like the PT2272, then receives this stream, decodes the address, and if the address matches, outputs the data. This constitutes a typical remote control system.