ICODE SLIX-L vs Tag-it HF-I Standard
NXP ICODE SLIX-L offers 32 bytes user memory with triple-password security, while TI Tag-it HF-I Standard provides 256 bytes user memory with per-block locking.
Side-by-side specs
Frequency
- ICODE SLIX-L
- 13.56 MHz
- Tag-it HF-I Standard
- 13.56 MHz
Protocol
- ICODE SLIX-L
- ISO/IEC 15693, ISO/IEC 18000-3
- Tag-it HF-I Standard
- ISO/IEC 15693, ISO/IEC 18000-3
Memory
- ICODE SLIX-L
- 512 bits (64 bytes) total, organized in 16 blocks of 4 bytes; 256 bits (32 bytes) user memory
- Tag-it HF-I Standard
- 2048 bits (256 bytes) user memory organized in 64 blocks of 32 bits (4 bytes) each, plus 64-bit UID, DSFID, AFI
Interface
- ICODE SLIX-L
- RF (contactless)
- Tag-it HF-I Standard
- RF (contactless)
Temp Range
- ICODE SLIX-L
- -40°C to +85°C (junction temperature)
- Tag-it HF-I Standard
- -40°C to +85°C operating, -40°C to +125°C storage
Form Factor
- ICODE SLIX-L
- Wafer (SL2S5002FUD: 520×484 µm, SL2S5102FUD: 520×607 µm, 120 µm thick), XSON3 package (SOT1122: 1×1.45×0.5 mm)
- Tag-it HF-I Standard
- Wafer (200 mm / 8 inch diameter, 265 µm thick after grinding), die size 1296 µm × 1116 µm, bumped (Ni/Au chemical bumps, 25 µm height)
Security
- ICODE SLIX-L
- 32-bit Privacy password with Privacy Mode, 32-bit Destroy password with irreversible DESTROY command, 32-bit EAS/AFI password for Electronic Article Surveillance and Application…
- Tag-it HF-I Standard
- Individual block locking (user lock and factory lock per block), irreversible write protection
| Spec | ICODE SLIX-L | Tag-it HF-I Standard |
|---|---|---|
| Frequency | 13.56 MHz | 13.56 MHz |
| Protocol | ISO/IEC 15693, ISO/IEC 18000-3 | ISO/IEC 15693, ISO/IEC 18000-3 |
| Memory | 512 bits (64 bytes) total, organized in 16 blocks of 4 bytes; 256 bits (32 bytes) user memory | 2048 bits (256 bytes) user memory organized in 64 blocks of 32 bits (4 bytes) each, plus 64-bit UID, DSFID, AFI |
| Interface | RF (contactless) | RF (contactless) |
| Temp Range | -40°C to +85°C (junction temperature) | -40°C to +85°C operating, -40°C to +125°C storage |
| Form Factor | Wafer (SL2S5002FUD: 520×484 µm, SL2S5102FUD: 520×607 µm, 120 µm thick), XSON3 package (SOT1122: 1×1.45×0.5 mm) | Wafer (200 mm / 8 inch diameter, 265 µm thick after grinding), die size 1296 µm × 1116 µm, bumped (Ni/Au chemical bumps, 25 µm height) |
| Security | 32-bit Privacy password with Privacy Mode, 32-bit Destroy password with irreversible DESTROY command, 32-bit EAS/AFI password for Electronic Article Surveillance and Application… | Individual block locking (user lock and factory lock per block), irreversible write protection |
Verdict
Choose the NXP ICODE SLIX-L if your application prioritizes cost savings, lower power consumption, and multi-layered password security over storage capacity. With 32 bytes of user memory organized in 16 blocks of 4 bytes, the ICODE SLIX-L delivers 8x less user memory than the Tag-it HF-I Standard but compensates with sophisticated access control: a 32-bit Privacy password that hides tag responses when activated, a 32-bit Destroy password for irreversible tag deactivation, and a 32-bit EAS/AFI password protecting Electronic Article Surveillance and Application Family Identifier functions. This three-tier password architecture makes it ideal for retail anti-theft systems, low-data item tracking, and scenarios where controlled tag deactivation matters more than extensive data logging. The reduced memory footprint also translates to lower tag cost and reduced power requirements, making it suitable for high-volume disposable applications like event tickets or single-use pharmaceutical tracking.
Choose the Texas Instruments Tag-it HF-I Standard if your application requires substantial onboard data storage and granular write-protection without password complexity. Its 256 bytes of user memory—organized in 64 blocks of 4 bytes each—provides 8x more storage than the ICODE SLIX-L, enabling detailed logging, supply chain records, or multi-step process data directly on the tag. Each of the 64 blocks supports individual locking (both user-settable and factory lock options), allowing you to permanently protect specific data blocks while leaving others writable—useful for progressive data capture in manufacturing or logistics where some fields (like origin data) must remain immutable while others (like inspection timestamps) get added downstream. The Tag-it HF-I Standard lacks password-based access control but includes DSFID (Data Storage Format Identifier) and AFI (Application Family Identifier) bytes for application-level filtering. This chip suits library management systems, asset tracking with detailed maintenance histories, or any use case where maximizing on-tag data storage and field-level write protection outweigh the need for password-based privacy features.
FAQ
What is the user memory difference between ICODE SLIX-L and Tag-it HF-I Standard?
ICODE SLIX-L provides 32 bytes (256 bits) of user memory in 16 blocks, while Tag-it HF-I Standard offers 256 bytes (2048 bits) in 64 blocks—8 times more storage capacity for data-intensive applications.
Which chip offers better security features for access control?
ICODE SLIX-L provides superior password-based security with three separate 32-bit passwords (Privacy, Destroy, and EAS/AFI), while Tag-it HF-I Standard relies on individual block locking without password protection but offers granular per-block write protection.
Are ICODE SLIX-L and Tag-it HF-I Standard interoperable in ISO 15693 systems?
Yes, both chips comply with ISO/IEC 15693 and ISO/IEC 18000-3 standards at 13.56 MHz, so they work with the same readers. However, their security features (passwords vs. block locks) and memory capacities (32 vs. 256 bytes) require different data management approaches.
Sourcing ICODE SLIX-L or Tag-it HF-I Standard in volume?
Roxtron builds custom RFID and NFC products around both ICODE SLIX-L and Tag-it HF-I Standard. Tell us your project — quantities, form factor, timeline — and we'll come back within 24 hours with pricing and lead times.