HCS515/SL Microchip Integrated Circuit (Small Outline Packages) In Stock
Microchip HCS515/SL is a KEELOQ rolling code decoder IC for secure RF remote control systems operating from 2.0 V to 5.5 V supply in a 14-pin SOIC package. It decodes 66-bit encrypted KEELOQ transmissions for keyless entry and access control applications. Available in stock worldwide with competitive pricing.
- Manufacturer
- Microchip
- Package
- Small Outline Packages
- Pin Count
- 14
- Lifecycle
- ACTIVE
- Datasheet
- HCS515/SL Datasheet PDF
- Category
- Integrated Circuit
- Price
- From $2.5000(MOQ 1)
- Temp Range
- ?°C to 70.0°C
- RoHS
- Compliant
- Lead Time
- 3–7 business days
- Shipping
- DHL Express · Worldwide
What are the key features of HCS515/SL?
- On-chip KEELOQ hopping code decryption authenticates 66-bit encrypted RF transmissions against replay and code-grabbing attacks
- Wide 2.0 V to 5.5 V operating voltage supports both 3.3 V and 5 V microcontroller-based keyless entry receiver systems
- 14-pin SOIC-14 package integrates encoder/decoder logic with serial EEPROM interface to store up to 1024 learned transmitter codes
What is HCS515/SL used for?
The HCS515/SL is primarily used in automotive remote keyless entry (RKE) receivers and residential garage door opener controllers where rolling-code encryption prevents replay attacks. It decodes KEELOQ-encrypted 66-bit transmissions from HCS300 and HCS301 family key fobs, enabling secure one-way RF authentication at 315 MHz or 433 MHz. The device also suits industrial access control panels and alarm system receivers requiring tamper-resistant wireless authentication with up to 1024 paired transmitters.
What are the specifications of HCS515/SL?
| Pbfree Code | Yes |
| Manufacturer Package Code | SOIC-14 |
| Factory Lead Time | 6Weeks |
| YTEOL | 8 |
| JESD-30 Code | R-PDSO-G14 |
| JESD-609 Code | e3 |
| Number of Functions | 1 |
| Package Body Material | PLASTIC/EPOXY |
| Package Equivalence Code | SOP14,.25 |
| Package Shape | RECTANGULAR |
| Package Style | SMALL OUTLINE |
| Peak Reflow Temperature (Cel) | 260 |
| Qualification Status | Not Qualified |
| Screening Level | TS 16949 |
| Supply Current-Max | 2mA |
| Supply Voltage-Nom | 5V |
| Surface Mount | YES |
| Technology | CMOS |
| Telecom IC Type | DATA ENCRYPTION CIRCUIT |
| Temperature Grade | COMMERCIAL |
| Terminal Finish | Matte Tin (Sn) |
| Terminal Form | GULL WING |
| Terminal Pitch | 1.27mm |
| Terminal Position | DUAL |
| Time@Peak Reflow Temperature-Max (s) | 40 |
| Package | Small Outline Packages |
Compliance & Regulatory
| RoHS Status | Compliant |
| Lead-Free | Yes (Pb-Free) |
| Moisture Sensitivity Level | MSL 1 |
| ECCN | EAR99 |
| HTS Code | 8542.31.00.01 |
| Country of Origin | Thailand |
Where can I find the HCS515/SL datasheet?
HCS515/SL Datasheet DownloadOfficial datasheet from Microchip
What are equivalent replacements for HCS515/SL?
Compatible alternatives and drop-in replacements for HCS515/SL:
Frequently Asked Questions
What encryption scheme does HCS515/SL use and how does it prevent replay attacks in keyless entry systems?
The HCS515/SL implements KEELOQ rolling-code encryption using a 64-bit secret manufacturer key and a 16-bit synchronization counter. Each transmission generates a unique 32-bit encrypted hop code, so an attacker capturing one 66-bit transmission cannot replay it as the receiver advances its expected counter value by up to 128 counts ahead of the last accepted code.
How many paired transmitter key fobs can HCS515/SL store and what is the supply voltage range?
The HCS515/SL can store up to 1024 paired transmitter serial numbers in its serial EEPROM interface, supporting large fleets of key fobs in multi-unit residential or commercial access control installations. The device operates from a 2.0 V to 5.5 V supply, making it compatible with both 3.3 V and 5 V receiver circuit designs.
Which RF transmitter ICs are compatible with HCS515/SL for building a KEELOQ remote control system?
The HCS515/SL is designed to decode transmissions from Microchip HCS300, HCS301, HCS320, and HCS360 family KEELOQ encoder ICs. These transmitters generate 66-bit KEELOQ packets over OOK-modulated RF carriers at 315 MHz or 433 MHz, and HCS515/SL decodes the serial bitstream from the RF demodulator output operating at 3.3 V or 5 V logic levels.
For a garage door opener using HCS515/SL, how does the 14-pin SOIC package simplify receiver board integration?
The 14-pin SOIC-14 package of HCS515/SL integrates the full KEELOQ decode engine, EEPROM interface, and output driver logic into a 8.65 mm x 3.9 mm footprint, eliminating the need for a separate microcontroller to perform decryption. This reduces the receiver PCB to fewer than 20 external components including the RF demodulator, decoupling capacitors, and connector, cutting production cost by approximately 30% compared to MCU-based implementations.
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More from Microchip
| Qty. | Unit Price | Ext. Price |
|---|---|---|
| 1+ | $2.7900 | $2.79 |
| 25+ | $2.7300 | $68.25 |
| 100+ | $2.6900 | $269.00 |
| 1000+ | $2.6000 | $2600.00 |
| 5000+ | $2.5000 | $12500.00 |
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