ICODE SLIX vs ST25TV512

ICODE SLIX offers 896-bit user memory with 32-bit password protection, while ST25TV512 provides 512-bit memory with advanced TruST25 digital signature and tamper detection.

Side-by-side specs

Frequency
ICODE SLIX
13.56 MHz
ST25TV512
13.56 MHz
Protocol
ICODE SLIX
ISO/IEC 15693-3, ISO/IEC 15693-2, ISO/IEC 18000-3
ST25TV512
ISO/IEC 15693, NFC Forum Type 5
Memory
ICODE SLIX
1024 bits organized in 32 blocks of 4 bytes each (896 bits user memory, 128 bits configuration area)
ST25TV512
512 bits (64 bytes) EEPROM user memory
Interface
ICODE SLIX
RF (contactless)
ST25TV512
RF (contactless)
Temp Range
ICODE SLIX
-40°C to +85°C (junction temperature)
ST25TV512
-40°C to +85°C
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)
ST25TV512
UFDFPN5 (1.7×1.4 mm), sawn/bumped wafer (75 µm or 120 µm)
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
ST25TV512
Two 32-bit passwords (or one 64-bit), TruST25 digital signature, Kill mode, Untraceable mode, password encryption, tamper detect (optional), EAS

Verdict

Choose ICODE SLIX if you need larger memory capacity and straightforward ISO 15693 compliance. With 896 bits (112 bytes) of user memory organized in 32 blocks of 4 bytes each, it provides nearly double the storage of the ST25TV512. The chip includes a non-alterable 64-bit UID, 32-bit password protection for EAS/AFI functions, and block-level lock mechanisms for protecting specific memory regions. It operates at 13.56 MHz and conforms to ISO/IEC 15693-2, ISO/IEC 15693-3, and ISO/IEC 18000-3 standards, making it suitable for inventory management, supply chain tracking, and library systems where moderate security with larger data storage is required. The configuration area provides 128 bits for DSFID, AFI, and EAS settings, enabling basic anti-theft and application filtering capabilities. Choose ST25TV512 if you require advanced security features and privacy protection despite smaller memory capacity. With 512 bits (64 bytes) of EEPROM user memory, it offers approximately half the storage of ICODE SLIX but compensates with significantly enhanced security. The chip supports two independent 32-bit passwords or one 64-bit password, TruST25 digital signature for authentication, Kill mode for permanent deactivation, and Untraceable mode for privacy protection. It includes password encryption and optional tamper detection, making it suitable for pharmaceutical authentication, brand protection, and high-security applications. Operating at 13.56 MHz with ISO/IEC 15693 and NFC Forum Type 5 compliance, it ensures compatibility with standard NFC readers while providing EAS functionality. The digital signature capability is particularly valuable for verifying product authenticity in anti-counterfeiting applications where security outweighs memory requirements.

FAQ

What is the memory difference between ICODE SLIX and ST25TV512?

ICODE SLIX provides 896 bits (112 bytes) of user memory, while ST25TV512 offers 512 bits (64 bytes). ICODE SLIX has approximately 75% more user memory capacity.

Does ST25TV512 offer better security than ICODE SLIX?

Yes, ST25TV512 includes TruST25 digital signature authentication, Kill mode, Untraceable mode, password encryption, and optional tamper detection. ICODE SLIX provides basic 32-bit password protection and memory lock mechanisms but lacks advanced cryptographic features.

Are both chips compatible with ISO 15693 readers?

Yes, both operate at 13.56 MHz and support ISO/IEC 15693 protocol. ST25TV512 additionally supports NFC Forum Type 5 specification, while ICODE SLIX also conforms to ISO/IEC 18000-3 standard.

Sourcing ICODE SLIX or ST25TV512 in volume?

Roxtron builds custom RFID and NFC products around both ICODE SLIX and ST25TV512. Tell us your project — quantities, form factor, timeline — and we'll come back within 24 hours with pricing and lead times.