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NXP Semiconductors HT2MOA4S20/E/3/RJ
- Part No.:
- HT2MOA4S20/E/3/RJ
- Manufacturer:
- NXP Semiconductors
- Category:
- RFID, RF Access, Monitoring ICs
- Package:
- MOA4, Smart Card Module
- Datasheet:
-
HT2MOA4S20/E/3/RJ.pdf
- Description:
- IC RFID TRANSP 125KHZ PLLMC
- Quantity:
- Payment:
- Shipping:
Inventory:12,201
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Product details
Overview
HT2MOA4S20/E/3/RJ from NXP Semiconductors is a contactless 125 kHz HITAG 2 transponder IC in SOT500-2 (PLLMC) package, featuring 256-bit EEPROM (128-bit user memory), mutual authentication, and configurable public-mode A/B/C operation for RFID identification. It operates without internal battery, draws power via inductive coupling, and supports encrypted read/write in crypto mode or password mode.
For engineers reviewing the HT2MOA4S20/E/3/RJ datasheet, HT2MOA4S20/E/3/RJ pinout, HT2MOA4S20/E/3/RJ application, or HT2MOA4S20/E/3/RJ equivalent, key selection factors include its ISO 11784/11785 compliance for animal ID, PIT-compatible public-mode C, 10-year data retention, 100,000 write cycles, and dual Biphase/Manchester coding for robust RF link integrity in industrial tracking systems.
Technical Context
The HT2MOA4S20/E/3/RJ implements a fully integrated analog RF front-end with ASK modulation, on-chip voltage regulator, charge pump, and digital sequencer - enabling autonomous operation from magnetic field energy alone. Its digital control block handles half-duplex communication, memory access arbitration, and cryptographic state management per configuration page settings.
Memory organization is fixed at 8 pages × 32 bits, with page-level read/write protection enforced by EEPROM flags. Mode selection (public-mode A/B/C, password, or crypto) is determined solely by the 8-bit configuration byte in Page 3, and no external components are required beyond the resonant coil.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Operating Frequency | 125 kHz - Enables compatibility with standard low-frequency RFID readers and coil designs used in industrial and livestock systems. |
| Total Memory Size | 256 bit - Structured as 8 pages × 32 bits, supporting secure serial number (Page 0), secret keys (Pages 1–2 in crypto mode), and user-configurable data storage. |
| User Memory Capacity | 128 bit - Dedicated writable space across Pages 4–7, protected individually via memory flags to prevent unauthorized overwrite or readout. |
| Data Retention | 10 years at ≤55 °C - Guarantees long-term reliability of stored asset IDs, animal tags, or calibration data without refresh. |
| Write Endurance | 100,000 cycles - Supports repeated reprogramming in logistics or maintenance tracking applications where tag data changes frequently. |
| Read Coding Schemes | Biphase and Manchester - Ensures interoperability with legacy and modern RWDs; choice affects timing tolerance and noise immunity in noisy environments. |
| Modulation Type | ASK (Amplitude Shift Keying) - Standard for LF RFID; enables simple coil-based demodulation in cost-sensitive reader hardware. |
Pinout & Package
SOT500-2 (PLLMC) plastic leadless module carrier package, 35 mm wide tape format - designed for automated embedding into epoxy-encapsulated or injection-molded RFID tags; no exposed leads, optimized for coil integration and mechanical durability.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| LA / LB | Resonant Coil Interface | Differential RF port connecting directly to external LC tank; no external capacitors needed - input capacitance 189–231 pF sets resonant frequency with coil inductance. |
Key Features
| Feature | Design Value |
|---|---|
| Mutual Authentication | Enables secure bidirectional verification between HT2MOA4S20/E/3/RJ and RWD before data exchange - prevents cloning and replay attacks in high-value asset tracking. |
| Configurable Public Modes | Three factory-selectable read-only modes (A/B/C) allow drop-in replacement of MIRO, μEM H400x, ISO-compliant animal tags, or PCF793x PIT transponders without reader firmware changes. |
| Selective Memory Protection | Per-page read/write lock bits let designers isolate sensitive configuration (Page 3) or secret keys (Pages 1–2) from user-accessible memory (Pages 4–7), enforcing layered security policies. |
| No External Components Required | Full RF interface, regulation, and sequencing integrated - eliminates BOM cost and layout area for discrete diodes, capacitors, or regulators in compact tag designs. |
| HALT Function for Multi-Tag Operation | Allows RWD to selectively deactivate HT2MOA4S20/E/3/RJ after reading, enabling reliable anti-collision in dense tag environments like warehouse pallets or livestock pens. |
Applications
| Animal Identification Tags | Industrial Asset Tracking |
|---|---|
Use Scenario: Implantable or ear-tag RFID devices deployed in cattle, sheep, or poultry for lifetime traceability across farms, slaughterhouses, and export documentation. IC Role / Device Role / Timing Role: Passive transponder providing ISO 11784/11785-compliant 32-bit read-only serial number and species-specific metadata in public-mode B. Use Value: Eliminates manual record entry errors and enables automated scanning at chutes or gates - critical for regulatory compliance and disease outbreak containment. |
Use Scenario: Reusable metal-mount RFID tags affixed to CNC machines, tooling carts, or calibration equipment in factory floors with EMI-rich environments. IC Role / Device Role / Timing Role: Secure, tamper-resistant identifier storing maintenance history and calibration dates in encrypted user memory (Pages 4–7) accessed only after mutual authentication. Use Value: Prevents unauthorized modification of service records while enabling fast, battery-free scan-and-log workflows using handheld LF readers. |
| Gas Cylinder Management | Casino Chip Authentication |
Use Scenario: Embedded tags inside aluminum or composite gas cylinders to track fill cycles, inspection dates, pressure ratings, and ownership across rental fleets. IC Role / Device Role / Timing Role: Read/write transponder operating in password mode (Page 1 holds RWD password), allowing authorized refill stations to update usage counters and expiry dates. Use Value: Enforces mandatory inspection intervals and prevents over-pressurized or expired cylinders from re-entering service - directly supporting safety regulation enforcement. |
Use Scenario: High-security RFID chips embedded in casino gaming chips to verify authenticity, denomination, and table assignment during automated chip counting and vault reconciliation. IC Role / Device Role / Timing Role: Crypto-mode transponder storing encrypted chip ID and session keys (Pages 1–2), authenticated per transaction to prevent counterfeiting or chip swapping. Use Value: Reduces revenue loss from counterfeit chips and enables real-time inventory visibility - meeting strict gaming commission audit requirements for chip provenance. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar contactless 125 kHz transponder applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| HT2DC20S20/F/R | SOT385-1 package (smaller footprint, different tape width); identical electrical specs and memory map. | Better suited for space-constrained tags where module width must be minimized; same functional behavior in all modes. | Select HT2DC20S20/F/R when PCB or encapsulation cavity size requires narrower module carrier. |
| HT2ICS2002W/V6F/R | Unpackaged wafer die on FFC tape; no molded body; requires custom bonding and encapsulation. | Targeted at high-volume OEMs integrating directly into proprietary tag substrates - not plug-and-play replaceable. | Choose HT2ICS2002W/V6F/R only for vertically integrated tag manufacturing with assembly capability. |
Compared with HT2DC20S20/F/R and HT2ICS2002W/V6F/R, the HT2MOA4S20/E/3/RJ offers standardized SOT500-2 packaging for rapid prototyping and contract manufacturing - balancing mechanical robustness, ease of handling, and full feature parity without wafer-level integration complexity.
Availability
HT2MOA4S20/E/3/RJ is available at Aetrix Electronics and suitable for livestock tracking, industrial asset management, and gas cylinder ID requiring stable component supply, long-term data retention, and ISO-compliant RFID interoperability.
Supply support for HT2MOA4S20/E/3/RJ includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.
Manufacturer
NXP Semiconductors is a global semiconductor company headquartered in Eindhoven, Netherlands, specializing in secure connectivity solutions for automotive, industrial, and IoT applications.
The HITAG product line delivers certified, standards-compliant passive RFID transponders focused on secure identification in demanding physical environments - designed specifically for animal ID, industrial tagging, and regulated asset tracking where reliability and tamper resistance are non-negotiable.
FAQ
What is the operating frequency and modulation scheme of the HT2MOA4S20/E/3/RJ?
The HT2MOA4S20/E/3/RJ operates at 125 kHz using ASK (Amplitude Shift Keying) modulation for uplink communication to the reader. Its analog front-end is optimized for inductive coupling with standard LF reader coils, and it supports both Biphase and Manchester coding schemes for downlink data reception - ensuring compatibility across legacy and modern RWD platforms without external tuning components.
Does the HT2MOA4S20/E/3/RJ require an external power source or battery?
No, the HT2MOA4S20/E/3/RJ is a fully passive transponder. It derives all operating power from the magnetic field generated by the Read Write Device via inductive coupling through the LA/LB coil interface. The on-chip voltage regulator and charge pump convert this RF energy into stable internal supply rails - eliminating the need for batteries, wiring, or external power management circuitry in the tag design.
How is memory organized and protected in the HT2MOA4S20/E/3/RJ?
The HT2MOA4S20/E/3/RJ contains 256 bits of EEPROM organized into eight 32-bit pages. Memory protection is implemented via programmable flags: Pages 0–3 hold serial number, keys, and configuration; Pages 4–7 store user data. Each page can be independently locked against read or write access using dedicated EEPROM bits - enabling granular security policies such as read-only serial number and encrypted write-only calibration data.
Which ISO standards does the HT2MOA4S20/E/3/RJ support for animal identification?
The HT2MOA4S20/E/3/RJ supports ISO 11784 and ISO 11785 in public-mode B, delivering full compliance for animal identification systems. In this mode, it provides a standardized 32-bit read-only serial number and adheres to the prescribed transmission protocol, frame structure, and data encoding - enabling seamless integration with certified livestock scanners and national traceability databases worldwide.
Can the HT2MOA4S20/E/3/RJ emulate legacy transponders like PCF793x?
Yes, the HT2MOA4S20/E/3/RJ supports PIT-compatible public-mode C, which emulates PCF793x transponders at the protocol and timing level. This allows direct replacement in existing immobilizer or access control systems without modifying reader firmware or coil design - preserving investment in legacy infrastructure while upgrading to a more secure, longer-lifecycle NXP device.
HT2MOA4S20/E/3/RJ Specifications
- Product attributes
- Attribute value
- Manufacturer:
- NXP Semiconductors
- Series:
- HITAG® 2
- Package/Case:
- MOA4, Smart Card Module
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Type:
- RFID Transponder
- Frequency:
- 125kHz
- Standards:
- ISO 11784, ISO 11785
- Interface:
- -
- Voltage - Supply:
- 6.5V
- Operating Temperature:
- -
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- PLLMC
HT2MOA4S20/E/3/RJ FAQ
1.How can I place an order for HT2MOA4S20/E/3/RJ through Aetrix?
Please submit a Request for Quotation (RFQ) for HT2MOA4S20/E/3/RJ on Aetrix. Our sales agent will provide a competitive quotation and guide you through the order confirmation once you accept the terms.
2.Are the price and stock information for HT2MOA4S20/E/3/RJ reliable?
The price and inventory of HT2MOA4S20/E/3/RJ are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for HT2MOA4S20/E/3/RJ is usually 5 days.
3.What payment methods are accepted for HT2MOA4S20/E/3/RJ?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for HT2MOA4S20/E/3/RJ transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for HT2MOA4S20/E/3/RJ?
HT2MOA4S20/E/3/RJ orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your HT2MOA4S20/E/3/RJ order is processed, you will receive an email with the shipment details and tracking number.
Note: Tracking information may take up to 24 hours to appear. Express delivery typically takes 3–5 business days.
5.How can I obtain technical support or documentation for HT2MOA4S20/E/3/RJ?
For technical support, including HT2MOA4S20/E/3/RJ datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your HT2MOA4S20/E/3/RJ requirements.
6.How does Aetrix verify that HT2MOA4S20/E/3/RJ is sourced from the original manufacturer or authorized distributors?
All HT2MOA4S20/E/3/RJ products on Aetrix are procured from qualified distributors and authorized channels. Our dedicated quality assurance team conducts strict verification, including traceability checks and, if necessary, third-party testing. This ensures that HT2MOA4S20/E/3/RJ meets industry standards.
7.What is the process for return or replacement of HT2MOA4S20/E/3/RJ?
All HT2MOA4S20/E/3/RJ units undergo pre-shipment inspection (PSI). If there is an issue with HT2MOA4S20/E/3/RJ, returns or replacements are accepted under the following conditions:
1.Quantity discrepancies, incorrect items, or visible external defects (such as breakage or corrosion), acknowledged by Aetrix.
2.The issue is reported within 90 days of delivery.
3.The HT2MOA4S20/E/3/RJ part is unused and in its original packaging.
Return procedure for HT2MOA4S20/E/3/RJ:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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