HCS301-I/SN Microchip Integrated Circuit (Small Outline Packages) In Stock
The HCS301-I/SN from Microchip Technology is a KEELOQ code-hopping encoder IC designed for secure remote keyless entry systems. It generates encrypted rolling codes with a 64-bit key for high-security access control. Housed in an 8-pin SOIC package, it is widely used in automotive and building entry applications.
- Manufacturer
- Microchip
- Package
- Small Outline Packages
- Pin Count
- 8
- Lifecycle
- ACTIVE
- Datasheet
- HCS301-I/SN Datasheet PDF
- Category
- Integrated Circuit
- Price
- From $1.3100(MOQ 1)
- Temp Range
- -40.0°C to 85.0°C
- RoHS
- Compliant
- Lead Time
- 3–7 business days
- Shipping
- DHL Express · Worldwide
What are the key features of HCS301-I/SN?
- KEELOQ rolling-code encryption with 64-bit key prevents replay attacks in remote keyless entry systems
- On-chip EEPROM stores the encryption key and serial number without external memory
- Low operating voltage and sleep-mode current optimise battery life in handheld remote transmitters
- 8-pin SOIC package simplifies PCB integration with industry-standard footprint
What is HCS301-I/SN used for?
The HCS301-I/SN is primarily designed for automotive remote keyless entry (RKE) and garage door opener transmitters that require strong cryptographic security against code-grabbing and replay attacks. It is also used in building access control systems, industrial wireless controls, and any application demanding authenticated one-way RF transmission. Its compact SOIC-8 footprint and low power consumption make it a natural fit for battery-operated handheld transmitter fobs.
What are the specifications of HCS301-I/SN?
| Pbfree Code | Yes |
| Manufacturer Package Code | SOIC-8 |
| Reach Compliance Code | Compliant |
| Factory Lead Time | 18Weeks |
| YTEOL | 8 |
| 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 |
| Screening Level | TS 16949 |
| Supply Current-Max | 12mA |
| Supply Voltage-Nom | 6.6V |
| Surface Mount | YES |
| Telecom IC Type | DATA ENCRYPTION CIRCUIT |
| Temperature Grade | INDUSTRIAL |
| Terminal Finish | Matte Tin (Sn) |
| Terminal Form | GULL WING |
| Terminal Pitch | 1.27mm |
| Terminal Position | DUAL |
| 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 HCS301-I/SN datasheet?
HCS301-I/SN Datasheet DownloadOfficial datasheet from Microchip
What are equivalent replacements for HCS301-I/SN?
Compatible alternatives and drop-in replacements for HCS301-I/SN:
Frequently Asked Questions
What encryption method does the HCS301-I/SN use?
The HCS301-I/SN uses Microchip's proprietary KEELOQ code-hopping algorithm with a 64-bit encryption key, generating a new rolling code with every button press to protect against replay and code-grabbing attacks in remote keyless entry applications.
What package does the HCS301-I/SN come in?
It is packaged in an 8-pin SOIC (Small Outline Integrated Circuit) package with a 0.25-inch body width, fully compatible with standard SMT assembly processes and widely available PCB footprints for remote transmitter module designs.
What are the typical applications of the HCS301-I/SN?
Typical applications include automotive remote keyless entry fobs, garage and gate door openers, building access control transmitters, alarm system arming remotes, and any battery-operated RF transmitter requiring encrypted authentication with up to 64-bit KEELOQ security.
Is the HCS301-I/SN RoHS compliant?
Yes, the HCS301-I/SN carries a Pb-free designation (JESD-609 Code e3) and is RoHS compliant, making it suitable for use in consumer electronics, automotive systems, and other products subject to lead-free manufacturing requirements in the EU and other regions.
Does the HCS301-I/SN require external EEPROM?
No, the HCS301-I/SN integrates on-chip EEPROM to store the 64-bit encryption key, the 28-bit serial number, and other configuration data, which eliminates the need for external memory components and simplifies the overall transmitter circuit design.
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More from Microchip
| Qty. | Unit Price | Ext. Price |
|---|---|---|
| 1+ | $1.6300 | $1.63 |
| 75+ | $1.6000 | $120.00 |
| 100+ | $1.5100 | $151.00 |
| 1000+ | $1.3900 | $1390.00 |
| 5000+ | $1.3100 | $6550.00 |
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