ICODE SLIX vs Tag-it HF-I Standard

NXP ICODE SLIX offers 112 bytes user memory with password-protected EAS, while TI Tag-it HF-I provides 256 bytes with per-block locking. Both ISO 15693 13.56 MHz chips.

Side-by-side specs

Frequency

ICODE SLIX: 13.56 MHz
Tag-it HF-I Standard: 13.56 MHz

Protocol

ICODE SLIX: ISO/IEC 15693-3, ISO/IEC 15693-2, ISO/IEC 18000-3
Tag-it HF-I Standard: ISO/IEC 15693, ISO/IEC 18000-3

Memory

ICODE SLIX: 1024 bits organized in 32 blocks of 4 bytes each (896 bits user memory, 128 bits configuration area)
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: RF (contactless)
Tag-it HF-I Standard: RF (contactless)

Temp Range

ICODE SLIX: -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: Wafer (SL2S2002FUD, SL2S2102FUD: 120 μm, bumped), XSON3 SOT1122 (1 x 1.45 x 0.5 mm), MOA8 SOT500-4 (35 mm tape)
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: Unique 64-bit UID (non-alterable), 32-bit EAS/AFI password protection, lock mechanism for user memory blocks, DSFID, AFI, and EAS
Tag-it HF-I Standard: Individual block locking (user lock and factory lock per block), irreversible write protection

Spec	ICODE SLIX	Tag-it HF-I Standard
Frequency	13.56 MHz	13.56 MHz
Protocol	ISO/IEC 15693-3, ISO/IEC 15693-2, ISO/IEC 18000-3	ISO/IEC 15693, ISO/IEC 18000-3
Memory	1024 bits organized in 32 blocks of 4 bytes each (896 bits user memory, 128 bits configuration area)	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 (SL2S2002FUD, SL2S2102FUD: 120 μm, bumped), XSON3 SOT1122 (1 x 1.45 x 0.5 mm), MOA8 SOT500-4 (35 mm tape)	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	Unique 64-bit UID (non-alterable), 32-bit EAS/AFI password protection, lock mechanism for user memory blocks, DSFID, AFI, and EAS	Individual block locking (user lock and factory lock per block), irreversible write protection

Verdict

Choose ICODE SLIX if you need Electronic Article Surveillance (EAS) functionality with password protection and privacy features in a compact memory footprint. This chip provides 896 bits (112 bytes) of user memory organized in 32 blocks of 4 bytes each, operating at 13.56 MHz on ISO 15693 and ISO 18000-3 protocols. The ICODE SLIX includes a 32-bit password for EAS and AFI (Application Family Identifier) protection, plus individual block locking mechanisms. Its unique 64-bit non-alterable UID ensures traceability, while the EAS feature makes it suitable for retail anti-theft systems and inventory management where alarm functionality is required. The additional 128-bit configuration area allows for flexible application setup without consuming user memory space. Choose Tag-it HF-I Standard if you require double the user memory capacity with granular write protection per block. This chip delivers 2048 bits (256 bytes) of user memory in 64 blocks of 4 bytes each, also operating at 13.56 MHz following ISO 15693 and ISO 18000-3 standards. Each block can be independently locked with both user-accessible and factory lock options, providing irreversible write protection ideal for applications requiring permanent data storage like library book tracking, document authentication, or supply chain applications with extensive data requirements. The Tag-it HF-I lacks password-based access control and EAS functionality but compensates with significantly larger memory capacity. Both chips include 64-bit UID, DSFID (Data Storage Format Identifier), and AFI support, but the Tag-it prioritizes storage over security features.

FAQ

What is the memory difference between ICODE SLIX and Tag-it HF-I?

ICODE SLIX provides 896 bits (112 bytes) of user memory in 32 blocks, while Tag-it HF-I Standard offers 2048 bits (256 bytes) in 64 blocks. Tag-it HF-I has more than double the user memory capacity.

Do both chips support ISO 15693 protocol?

Yes, both NXP ICODE SLIX and TI Tag-it HF-I Standard fully support ISO/IEC 15693 and ISO/IEC 18000-3 protocols, operating at 13.56 MHz frequency with contactless RF interface.

Which chip has better security features for access control?

ICODE SLIX offers superior access control with 32-bit password protection for EAS and AFI features, while Tag-it HF-I provides only individual block locking without password-based authentication. ICODE SLIX is better suited for applications requiring controlled access to data.

Sourcing ICODE SLIX or Tag-it HF-I Standard in volume?

Roxtron builds custom RFID and NFC products around both ICODE SLIX 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.