PT2272-M4 Decoder IC (DIP-18) 🔐

The PT2272-M4 is a high-reliability, low-power remote control decoder IC in a DIP-18 package, engineered for use with the PT2262 encoder family. Designed for ASK/OOK RF modules (e.g., 315/433 MHz) and general digital transmission, it delivers robust decoding for wireless control applications. Ideal for both electronics hobbyists and engineers, it interfaces cleanly with Arduino, Raspberry Pi (with level shifting), and other microcontroller platforms.

Key Features ⭐

• M4 momentary outputs: 4 independent data outputs (D0–D3) that stay active only while a valid transmission is received.
• High reliability and durability: CMOS design with excellent noise immunity for stable operation in real-world environments.
• Low power consumption: Optimized for battery-powered receivers and embedded systems.
• Wide operating voltage: Works effectively across a broad voltage range of approximately 4–15 V DC (typ. 5 V).
• PT2262-compatible: Decodes data encoded by PT2262/SC2262 encoders with matching oscillator settings.
• Tri-state address decoding: 12 address pins (A0–A11) enable up to 3^12 unique address combinations for interference-resistant links.
• Valid Transmission (VT) output: Indicates when a correct code is received—perfect for gating logic or triggering microcontrollers.
• Simple timing: On-chip oscillator set by an external resistor (Rosc), matched to the encoder for reliable decoding.
• Through-hole package: Standard DIP-18 for easy prototyping and integration into electronics projects and modules.

Specifications 📐

• Model: PT2272-M4
• Function: 4-channel momentary code decoder for PT2262/SC2262
• Package: DIP-18, 2.54 mm (0.1 in) lead pitch
• Operating Voltage (VDD): ~4–15 V DC (typical use at 5 V)
• Outputs: D0–D3, CMOS/TTL-compatible, active-high
• Address Inputs: 12 tri-state lines (A0–A11): High, Low, or Floating
• Indicator: VT (Valid Transmission) active-high
• Oscillator: External resistor (Rosc) required; match to PT2262 encoder timing
• Compatibility: Works with ASK/OOK RF receiver modules (e.g., 315/433 MHz), IR, or wired digital links using PT2262

Pin Highlights 🧭

• D0–D3: 4 decoded data outputs (momentary action)
• VT: Valid Transmission indicator
• A0–A11: Address pins (tri-state) for code matching
• VDD/GND: Power supply pins
• OSC: Oscillator pin for external timing resistor

Interfacing with Microcontrollers 🔗

• Arduino (5 V): Directly connect D0–D3 and VT to digital inputs; common ground required. Ideal for decoding wireless remote buttons.
• Raspberry Pi (3.3 V): Use level shifting (resistor dividers or a buffer) when the PT2272-M4 is powered at 5 V, as Pi GPIOs are not 5 V tolerant.
• General microcontroller: TTL/CMOS-compatible outputs simplify integration in custom electronics components and modules.

Typical Applications 🚪🔔

• Remote control systems for lighting, fans, and appliances
• Garage door openers
• Vehicle alarm systems and keyless entry receivers
• Residential security systems and access control
• Wireless doorbell systems
• General-purpose wireless control and RF receiver projects

Why Choose the PT2272-M4? 💡

• Engineered for reliability with excellent noise immunity and stable decoding
• Low power operation makes it perfect for battery-powered receivers
• Flexible voltage range and simple timing reduce design complexity
• Prototyping-friendly DIP package for breadboards and perfboards
• Seamless with Arduino and Raspberry Pi for quick RF remote integration

Whether you’re building a secure wireless control module or integrating an RF receiver with a microcontroller, the PT2272-M4 offers a robust, low-power, and cost-effective solution for modern electronics projects.