HCS500T/SM Microchip Integrated Circuit (Small Outline Packages) In Stock
HCS500T/SM is a Microchip KEELOQ rolling-code encoder IC designed for secure remote keyless entry systems. It operates from 2.0 V to 6.3 V, encodes a 66-bit transmission with a 32-bit hopping code, and ships in an 8-pin SOIC package for compact RF transmitter modules.
- Manufacturer
- Microchip
- Package
- Small Outline Packages
- Pin Count
- 8
- Lifecycle
- ACTIVE
- Datasheet
- HCS500T/SM Datasheet PDF
- Category
- Integrated Circuit
- Price
- From $3.0300(MOQ 2100)
- 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 HCS500T/SM?
- KEELOQ rolling-code algorithm generating unique 66-bit encoded transmissions
- Operating supply range of 2.0 V to 6.3 V for battery-powered remotes
- 32-bit hopping code for high-security replay-attack prevention
- 8-pin SOIC package enabling compact RF transmitter PCB designs
- Compatible with HCS3xx/5xx decoder family for system-level pairing
What is HCS500T/SM used for?
HCS500T/SM is widely used in automotive remote keyless entry fobs, garage door openers, and building access control transmitters where rolling-code security is required. It is also found in industrial wireless command systems and home automation remotes that need a low-power, battery-operated transmitter with proven anti-replay protection.
What are the specifications of HCS500T/SM?
| Pbfree Code | Yes |
| JESD-30 Code | R-PDSO-G8 |
| JESD-609 Code | e3 |
| Number of Functions | 1 |
| Package Body Material | PLASTIC/EPOXY |
| Package Equivalence Code | SOP8,.25 |
| Package Shape | RECTANGULAR |
| Package Style | SMALL OUTLINE |
| Peak Reflow Temperature (Cel) | 260 |
| Qualification Status | Not Qualified |
| Supply Current-Max | 2.4mA |
| Supply Voltage-Nom | 5V |
| Surface Mount | YES |
| Technology | CMOS |
| Telecom IC Type | DATA ENCRYPTION CIRCUIT |
| Temperature Grade | COMMERCIAL |
| Terminal Finish | MATTE TIN |
| 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 3 |
| ECCN | EAR99 |
| HTS Code | 8542.31.00.01 |
| Country of Origin | Thailand |
Where can I find the HCS500T/SM datasheet?
HCS500T/SM Datasheet DownloadOfficial datasheet from Microchip
What are equivalent replacements for HCS500T/SM?
Compatible alternatives and drop-in replacements for HCS500T/SM:
Frequently Asked Questions
What security mechanism does HCS500T/SM use to prevent replay attacks in remote keyless entry systems?
HCS500T/SM uses the KEELOQ rolling-code algorithm to generate a unique 66-bit encoded word for every button press. The 32-bit hopping code portion changes with each transmission, making replay attacks ineffective because a captured code cannot be reused to unlock the system.
What supply voltage range supports HCS500T/SM in a coin-cell-powered remote fob design?
The device operates across a 2.0 V to 6.3 V supply range, which is directly compatible with common CR2032 coin cells (3 V nominal) and standard AA alkaline cells (1.5 V × 2 = 3 V). This wide range accommodates battery discharge from full charge down to near-depletion without a regulator.
How does the SOIC-8 footprint of HCS500T/SM compare to a DIP-8 alternative for space-constrained transmitter PCBs?
The SOIC-8 body measures approximately 5 mm × 4 mm versus a DIP-8 footprint of about 10 mm × 7.5 mm, giving roughly a 70% area reduction. This makes HCS500T/SM in the SM (SOIC) package the preferred choice when the PCB must fit inside a thin key-fob housing under 4 mm thick.
Which Microchip decoder ICs are compatible with HCS500T/SM for a matched transmitter-receiver pair?
HCS500T/SM is designed to pair with Microchip HCS3xx and HCS5xx series KEELOQ decoder ICs, such as the HCS512 and HCS362, which implement the same rolling-code synchronization window of up to 16 out-of-sync presses before resynchronization is required.
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| 10500+ | $3.1700 | $33285.00 |
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