Keszoox
EV1527 / HS1527 Wireless Encoder IC — SOP-8, OTP, 20-Bit Address, 433MHz RF (10-Pack)
EV1527 / HS1527 Wireless Encoder IC SOP-8, OTP, 20-Bit Address, 433MHz RF (10-Pack)
Couldn't load pickup availability
EV1527 / HS1527 Wireless Encoder IC — SOP-8, OTP, 20-Bit Address, 433MHz RF (10-Pack)
The EV1527 (also known as HS1527 and PT2262-compatible) is a CMOS OTP (one-time programmable) encoder IC designed for 433MHz RF remote control transmitter applications. It encodes a 20-bit address and 4-bit data into a serial pulse-width modulated signal, which is then transmitted via an ASK/OOK RF module. It is the standard encoder IC used in garage door remotes, wireless alarm systems, and DIY RF remote control projects.
Key Specifications
| Parameter | Value |
|---|---|
| Package | SOP-8 (SMD) |
| Address Bits | 20-bit (OTP programmable) |
| Data Bits | 4-bit |
| Encoding | Pulse-width modulation (PWM), ASK/OOK compatible |
| Supply Voltage | 1.5–12V |
| Oscillator | External resistor (typical: 4.7MΩ for 433MHz) |
| Transmission Frequency | 433.92MHz (with matching RF module) |
| Quantity | 10 pieces |
Why Choose EV1527 / HS1527?
- 20-bit OTP address — over 1 million unique codes, minimizing interference between nearby remotes
- Wide supply range 1.5–12V — works with coin cells, AA batteries, and 12V systems
- SOP-8 SMD — compact footprint for custom PCB remote control transmitters
- Compatible with EV1527 decoders — pairs with RX480E, SYN480R, and EV1527-protocol relay receivers
- 10-pack value — sufficient for multiple remote builds and repair stock
Compatible With
- RF Modules: FS1000A 433MHz ASK transmitter module, XD-FST
- Decoder ICs: EV1527 decoder, RX480E, SYN480R, PT2272
- Receiver modules: XY-MK-5V, RXB6, SRX882
- Systems: Garage door openers, wireless doorbells, 433MHz alarm sensors
Frequently Asked Questions
Q: What is the difference between EV1527, HS1527, and PT2262?
A: EV1527 and HS1527 are functionally identical — different brand names for the same OTP encoder with 20-bit address + 4-bit data. PT2262 is an older CMOS encoder with a similar protocol but uses a different pin configuration (18-pin DIP) and address/data bit allocation. EV1527 receivers will decode EV1527/HS1527 signals but may not decode PT2262 signals without adjustment.
Q: How do I set the address on the EV1527?
A: The 20-bit address is set by connecting the A0–A19 address pins to VDD (logic 1) or VSS (logic 0). Since it is OTP, the address is fixed after programming. For a re-programmable alternative, use the PT2262 with external DIP switches.
Q: What oscillator resistor value do I need for 433MHz operation?
A: Use a 4.7MΩ resistor between the OSC1 and OSC2 pins. This sets the internal oscillator frequency, which determines the RF pulse timing. The actual 433.92MHz carrier is generated by the external RF transmitter module, not the EV1527 itself.
Package Contents
- 10× EV1527 / HS1527 Wireless Encoder IC (SOP-8)
