ST25R3916-AQET STMicroelectronics Integrated Circuit (Quad Flat No-Lead) In Stock
STMicroelectronics ST25R3916-AQET is a high-performance NFC universal device and EMVCo reader IC supporting ISO 14443, ISO 15693, and NFC Forum standards. Operates from 2.6 V to 5.5 V supply with integrated RF front-end, receive demodulator, and SPI interface in a 32-pin QFN package. Available in stock worldwide with fast shipping.
- Manufacturer
- STMicroelectronics
- Package
- Quad Flat No-Lead
- Pin Count
- 33
- Lifecycle
- ACTIVE
- Datasheet
- ST25R3916-AQET Datasheet PDF
- Category
- Integrated Circuit
- Price
- From $2.5510(MOQ 1)
- Temp Range
- -40.0°C to 105.0°C
- RoHS
- Compliant
- Lead Time
- 3–7 business days
- Shipping
- DHL Express · Worldwide
Key Features
- Multi-protocol NFC reader supporting ISO 14443 A/B, ISO 15693, NFC-V, and EMVCo Level 1 for universal smart card, contactless payment, and RFID tag reading
- Integrated RF transmitter and receive demodulator with automatic gain control eliminates most external RF front-end components, reducing BOM and PCB area
- Automatic antenna tuning and load modulation detection enable reliable NFC communication at distances up to 8 cm from passive tags and cards
- SPI host interface up to 6 MHz and interrupt-driven operation allow straightforward integration with microcontrollers in POS terminals, access control, and IoT gateway designs
Applications
The ST25R3916-AQET is the reference design IC for EMVCo contactless payment terminals and NFC-enabled POS systems requiring certified multi-protocol interoperability with bank cards, transit passes, and mobile wallets. Its support for ISO 15693 and ISO 14443 A/B enables dual-use deployments in access control, inventory management, and healthcare asset tracking where multiple RFID tag standards coexist. The 32-pin QFN package and 2.6 V to 5.5 V supply range make it suitable for battery-powered portable readers, smart locks, and IoT gateways integrating NFC alongside Wi-Fi or Bluetooth modules.
Specifications
| JESD-30 Code | S-PQCC-N32 |
| Package Body Material | PLASTIC/EPOXY |
| Package Equivalence Code | LCC32,.2SQ,20 |
| Package Shape | SQUARE |
| Package Style | CHIP CARRIER, HEAT SINK/SLUG, VERY THIN PROFILE |
| Screening Level | ISO 15693 |
| Supply Voltage-Max | 5.5V |
| Supply Voltage-Min | 2.6V |
| Supply Voltage-Nom | 3.3V |
| Surface Mount | YES |
| Technology | CMOS |
| Terminal Form | NO LEAD |
| Terminal Pitch | 0.5mm |
| Terminal Position | QUAD |
| uPs/uCs/Peripheral ICs Type | NFC CONTROLLERS |
| Package | Quad Flat No-Lead |
Compliance & Regulatory
| RoHS Status | Compliant |
| Lead-Free | Yes (Pb-Free) |
| ECCN | EAR99 |
| HTS Code | 8542.31.00.30 |
Alternate & Equivalent Parts
Compatible alternatives and drop-in replacements for ST25R3916-AQET:
Frequently Asked Questions
Which NFC and RFID protocols does the ST25R3916-AQET support for multi-standard deployments?
The ST25R3916-AQET supports ISO 14443 Type A and Type B, ISO 15693 (NFC-V), FeliCa, and the full NFC Forum Tag Types 1 through 5. It also meets EMVCo Level 1 certification requirements for contactless payment card reading, making it suitable for a single reader design that interoperates with bank cards, transit cards, loyalty tags, and NFC smartphones without requiring multiple RF front-end chips.
What supply voltage range does ST25R3916-AQET accept, and how does it fit into a 3.3 V microcontroller system?
The ST25R3916-AQET operates from 2.6 V to 5.5 V, with a nominal supply of 3.3 V. This allows direct power from the same 3.3 V rail used by most ARM Cortex-M microcontrollers, eliminating the need for a separate regulated supply for the NFC front-end. The SPI interface operates at speeds up to 6 MHz and is compatible with 3.3 V logic, enabling direct connection to GPIO pins without level-shift ICs.
How far can the ST25R3916-AQET read a passive NFC tag, and what affects read range?
The ST25R3916-AQET can achieve read distances up to 8 cm for ISO 14443 and ISO 15693 cards with a properly matched antenna coil. Practical range depends on antenna size, PCB ground plane layout, RF power output setting, and nearby metallic surfaces. The integrated automatic antenna tuning compensates for environment-induced detuning, helping maintain consistent read distance in final product enclosures with plastic or glass surfaces.
What external components are required to complete an NFC reader design using ST25R3916-AQET?
A complete ST25R3916-AQET NFC reader requires an antenna matching network (typically 2 to 4 passive components — inductors and capacitors in the 1 nH to 100 nF range), decoupling capacitors on the supply pins, and an antenna coil tuned to 13.56 MHz. The integrated transmitter, receive demodulator, oscillator, and power management significantly reduce the external component count compared to discrete RF front-end designs, allowing a functional reader PCB to be completed in fewer than 20 passive components.
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About STMicroelectronics
STMicroelectronics is a global semiconductor leader serving customers across the spectrum of electronics applications. ST's products are found in a wide range of applications including automotive, industrial, personal electronics, and communications.
| Qty. | Unit Price | Ext. Price |
|---|---|---|
| 1+ | $2.5510 | $2.55 |
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