LF 125 kHzNXP

HITAG µ

Name: NXP HITAG µ
Brand: NXP

The NXP HITAG µ is an LF 125 kHz RFID tag IC, with HITAG µ: 128 bits total (4 blocks); HITAG µ Advanced: 512 bits (16 blocks); HITAG µ Advanced+: 1760 bits (55 blocks). Up to 10,000 erase/write cycles, 10 years data retention, operating at 100-150 kHz (LF), under ISO 11784, ISO 11785 (Animal ID); designed for ISO/IEC 14223; Reader Talks First (RTF) with anti-collision Transponder Talks First (TTF).

Next-gen ultra-compact HITAG, ISO 18000-2

Official Datasheet ↗

Frequency

100-150 kHz (LF)

Protocol

ISO 11784, ISO 11785 (Animal ID); designed for ISO/IEC 14223; Reader Talks First (RTF) with anti-collision, Transponder Talks First (TTF)

Memory

HITAG µ: 128 bits total (4 blocks); HITAG µ Advanced: 512 bits (16 blocks); HITAG µ Advanced+: 1760 bits (55 blocks). Up to 10,000 erase/write cycles, 10 years data retention

Interface

RF contactless (inductive coupling); integrated resonance capacitor 210 pF ±3% or 280 pF ±5%

Temp Range

-40°C to +85°C (junction), -55°C to +125°C (storage)

Form Factor

Sawn gold-bumped 8" wafer (550×550 µm die), HVSON2 (SOT899-1, 3×2×0.85 mm), SOT-1122 (XSON3, 1×1.45×0.5 mm)

Full Specifications

Manufacturer	NXP
Frequency Category	LF 125 kHz
Frequency	100-150 kHz (LF)
Protocol	ISO 11784, ISO 11785 (Animal ID); designed for ISO/IEC 14223; Reader Talks First (RTF) with anti-collision, Transponder Talks First (TTF)
Memory	HITAG µ: 128 bits total (4 blocks); HITAG µ Advanced: 512 bits (16 blocks); HITAG µ Advanced+: 1760 bits (55 blocks). Up to 10,000 erase/write cycles, 10 years data retention
Interface	RF contactless (inductive coupling); integrated resonance capacitor 210 pF ±3% or 280 pF ±5%
Temperature Range	-40°C to +85°C (junction), -55°C to +125°C (storage)
Form Factor	Sawn gold-bumped 8" wafer (550×550 µm die), HVSON2 (SOT899-1, 3×2×0.85 mm), SOT-1122 (XSON3, 1×1.45×0.5 mm)
Security	48-bit Unique Identification Number (UID); 32-bit password with memory lock functionality and password-protected read/write regions

Engineering Brief

The HITAG µ family comprises ultra-compact, low-cost LF transponder ICs operating at 100–150 kHz with full ISO 11784/11785 compliance and optional ISO/IEC 14223 support. Available in three memory sizes (128 to 1760 bits EEPROM), the devices integrate a tuned resonance capacitor (210 or 280 pF) and support both Transponder Talks First and Reader Talks First modes with fast anti-collision (1 or 16 slots). Security features include a 48-bit UID and 32-bit password with granular memory locking. Designed for extreme miniaturization (550 µm die) and harsh environments, HITAG µ targets animal ID, laundry tracking, industrial logistics, and brand authentication.

Typical Applications

Standards & Compliance

Frequently Asked Questions

What memory sizes are available in the HITAG µ family?

The HITAG µ family offers three memory configurations: HITAG µ with 128 bits (4 blocks), HITAG µ Advanced with 512 bits (16 blocks), and HITAG µ Advanced+ with 1760 bits (55 blocks). All variants support up to 10,000 erase/write cycles with 10 years data retention.

Is the HITAG µ compliant with ISO 11784 and ISO 11785 animal identification standards?

Yes, the HITAG µ family is fully compliant with ISO 11784 and ISO 11785 standards for animal identification. It also supports ISO/IEC 14223 protocols and operates at 100-150 kHz low frequency.

What is the integrated resonance capacitor value in HITAG µ chips?

HITAG µ chips integrate a resonance capacitor available in two variants: 210 pF ±3% or 280 pF ±5%. This integrated component eliminates the need for external tuning capacitors, enabling extreme miniaturization down to 550 µm die size.

Does the HITAG µ support anti-collision for reading multiple tags?

Yes, the HITAG µ supports fast anti-collision with 1 or 16 slots in Reader Talks First (RTF) mode. It also supports Transponder Talks First (TTF) mode for flexible reader-tag communication scenarios.

What security features does the HITAG µ provide?

The HITAG µ includes a 48-bit Unique Identification Number (UID) and 32-bit password protection. It offers memory lock functionality and password-protected read/write regions for secure data access control.

What are typical applications for HITAG µ transponder ICs?

HITAG µ is designed for animal identification, laundry and textile tracking, industrial logistics, asset tracking, and brand authentication. Its ultra-compact size (550 µm die) and harsh environment durability make it ideal for applications requiring miniaturization and long-term reliability.

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