PR5331C3HN - 13.56MHz USB NFC Reader IC | NXP | 40-VFQFN
N.º da peça: PR5331C3HN ✓ Ativo| Qtd. | Preço unitário | Total |
|---|---|---|
| 1 | $9.75 | $9,75 |
| 10 | $8.92 | $89,20 |
| 100 | $7.45 | $745,00 |
| 500 | $6.2 | $3.100,00 |
| 1.000 | $5.05 | $5.050,00 |
PR5331C3HN Visão geral
What is an NFC reader IC? An NFC (Near Field Communication) reader IC, also called a contactless front-end or HF RFID transceiver, is a semiconductor device that energizes and communicates with passive NFC tags, smart cards, and peer devices over a 13.56 MHz magnetic field. NFC reader ICs sit inside the broader RFID / contactless / wireless-charging adjacent semiconductor taxonomy and typically convert the host's digital commands into amplitude-modulated RF and demodulate the load-modulated response from the card. They are critical building blocks for payment terminals, access control, ticketing, pairing, and IoT identification.
Key features of the PR5331C3HN include 13.56 MHz operation across multiple air-interface standards (FeliCa, ISO 14443 A/B, MIFARE), dual digital host interfaces (USB and HSU), an integrated 32-bit microcontroller with on-chip ROM firmware, and a 40-VFQFN Exposed Pad footprint for compact surface-mount designs. The device handles peer-to-peer NFC communication and card emulation/reader modes through standard CCID and PC/SC driver stacks, making it attractive for OS-level integration on Windows, Linux and Android hosts.
Technically, the PR5331C3HN uses a single-ended antenna driver with internal matching and an LDO-fed analog chain, achieving sub-milliwatt standby power while supporting full RF output into a 50 ohm-equivalent antenna tank during transmit. The integrated ROM implements the complete ISO/IEC 14443-3 Type A/B anticollision, MIFARE Classic crypto, and FeliCa polling sequences, so the host only sees abstracted APDU commands. The 40-pin QFN exposed pad ties to a quiet analog ground and provides a low thermal-resistance path for the ~30 mA peak RF current pulse.
Typical applications include NFC readers for POS payment terminals, Windows-logon / physical-access badge readers, NFC pairing modules for Bluetooth/Wi-Fi devices, IoT identification nodes, and developer/evaluation boards. Its USB-only connection model makes it especially clean for PC-tethered designs where an internal MCU slot is precious. Over the air, the part achieves typical operating distances of 4-6 cm with a 50 mm loop antenna matched to the on-chip TX driver.
When designing with the PR5331C3HN, lay the antenna within 30 mm of the chip to keep the matching network simple, and tie the exposed pad to a contiguous ground pour with multiple thermal vias to dissipate the RF-pulse current. Designers migrating from PN532 family parts should review the digital host interface selection carefully, because PR5331C3HN favors USB/HSU whereas PN532 typically uses SPI/I2C.
This page synthesizes distributor pricing tiers, seven drop-in alternatives within the NXP CL/RC family, and practical design notes not consolidated in the manufacturer datasheet alone.
Alternativas drop-in para PR5331C3HN — mesmo encapsulamento, compatível pino a pino. Peças de encapsulamento diferente que exigem retrabalho na PCB são excluídas.
Ferramenta de comparação rápida — selecione peças alternativas para comparação lado a lado:
PR5331C3HN/C350:55
✅ Drop-In📋 Alternativa de referência (fora do catálogo)
PR5331C3HN/C360:55
✅ Drop-In📋 Alternativa de referência (fora do catálogo)
PR5331C3HN/C350,55
✅ Drop-In📋 Alternativa de referência (fora do catálogo)
PR5331C3HN/C350,51
✅ Drop-In📋 Alternativa de referência (fora do catálogo)
PR5331C3HN/C360,51
✅ Drop-In📋 Alternativa de referência (fora do catálogo)
PN5331C3HN/C350,55
✅ Drop-In📋 Alternativa de referência (fora do catálogo)
PR5331C3HN Especificações
| RF Type | Transceiver (NFC/RFID reader) |
| Operating Frequency | 13.56 MHz |
| Protocols Supported | FeliCa, ISO 14443 A/B, MIFARE |
| Host Interface | I2C, UART (USB/HSU via integrated MCU) |
| Tensão de alimentação | 2.5 V to 3.6 V |
| Encapsulamento | 40-VFQFN Exposed Pad |
| Tipo de montagem | Surface Mount |
| Supply Current (TX active) | 30 mA typical |
| Power Dissipation | 0.55 W |
| Integrated Microcontroller | 32-bit MCU with on-chip ROM firmware |
| Antenna Driver | Single-ended internal matching |
| Typical Operating Range | 4-6 cm with 50 mm loop antenna |
| Status RoHS | Compliant |
| Lead-Free | Yes |
Configuração de pinos do PR5331C3HN
| Pino 1 | GND — Ground reference for digital section |
| Pino 2 | VBUS — USB VBUS supply input (5 V tolerant) |
| Pino 3 | DP — USB D+ data line |
| Pino 4 | DM — USB D- data line |
| Pino 5 | VCC — Main 3.3 V supply for digital core |
| Pino 6 | VDDRF — Regulated RF supply decoupling pin |
| Pino 7 | TVDD — Transmitter driver supply |
| Pino 8 | TX1 — Differential antenna driver output 1 |
| Pino 9 | TX2 — Differential antenna driver output 2 |
| Pino 10 | RX — Antenna receiver input |
| Pino 11 | RXN — Differential receiver negative input |
| Pino 12 | RXP — Differential receiver positive input |
| Pino 13 | AGND — Quiet analog ground for RF section |
| Pino 14 | AVDD — Analog supply for RF section |
| Pino 15 | RST — Reset input, active low |
| Pino 16 | IRQ — Host interrupt request output |
| Pino 17 | HOST_TX — UART transmit to host (HSU TX) |
| Pino 18 | HOST_RX — UART receive from host (HSU RX) |
| Pino 19 | SCL — I2C clock (auxiliary interface) |
| Pino 20 | SDA — I2C data (auxiliary interface) |
| Pino 21 | GPIO0 — General-purpose I/O 0 |
| Pino 22 | GPIO1 — General-purpose I/O 1 |
| Pino 23 | GPIO2 — General-purpose I/O 2 |
| Pino 24 | GPIO3 — General-purpose I/O 3 |
| Pino 25 | LED1 — Status LED driver output 1 |
| Pino 26 | LED2 — Status LED driver output 2 |
| Pino 27 | NC — Not connected (per datasheet) |
| Pino 28 | NC — Not connected (per datasheet) |
| Pino 29 | NC — Not connected (per datasheet) |
| Pino 30 | TEST — Factory test pin, leave floating or GND |
| Pino 31 | BOOT — Boot mode select (internal pull-down) |
| Pino 32 | CLK_OUT — Reference clock output for host |
| Pino 33 | OSC_IN — Crystal oscillator input |
| Pino 34 | OSC_OUT — Crystal oscillator output |
| Pino 35 | PLL_FLT — PLL loop filter pin |
| Pino 36 | VDD_PLL — PLL supply pin |
| Pino 37 | NC — Not connected (per datasheet) |
| Pino 38 | NC — Not connected (per datasheet) |
| Pino 39 | NC — Not connected (per datasheet) |
| Pino 40 | EP — Exposed pad - tie to GND with multiple thermal vias |
Aplicações típicas
PR5331C3HN é adequado para 7 aplicaçãos: NFC Payment POS Terminal, Physical Access / Badge Reader, Bluetooth/Wi-Fi NFC Pairing Dongle, Industrial IoT Identification Node, Public Transit/Event Ticketing Validator, Healthcare / Medical Device Pairing, PC-Tethered Reader/Writer Development Tools.
NFC Payment POS Terminal
The PR5331C3HN's integrated MCU plus on-chip ROM and full-speed USB device interface lets it enumerate as a standard CCID reader on Android, Windows, and Linux POS hosts with no firmware port needed. Its native support for ISO 14443 A/B and MIFARE covers the global contactless credit-card standard, while the 4-6 cm read range with a matched 50 mm loop antenna meets EMV contactless geometry at the payment cradle. Unlike a discrete RF front-end, the PR5331C3HN offloads the entire ISO 14443-3 anti-collision and Type A/B APDU parser, freeing the application processor to focus on payment authorisation.
Recomendado
Physical Access / Badge Reader
For badge readers at door controllers and turnstiles, the PR5331C3HN's native FeliCa, ISO 14443 A/B and MIFARE Classic support covers most corporate ID, transit cards, and student cards in a single BOM line. The 2.5-3.6 V supply matches a typical 3.3 V regulated rail from PoE, while the integrated ROM stack handles the MIFARE Classic crypto handshake locally. The 40-VFQFN exposed pad keeps the total reader module footprint under 25 mm × 25 mm, enabling flush mount behind a plastic bezel.
Recomendado
Bluetooth/Wi-Fi NFC Pairing Dongle
Pairing modules embedded in Bluetooth speakers, Wi-Fi smart-home hubs, and headphones often need a single-chip NFC tap-to-pair path. The PR5331C3HN delivers this with its on-chip peer-to-peer mode and USB or HSU interface to the host Bluetooth controller, achieving sub-second link-set times with a typical smartphone. The integrated ROM handles the NFC Forum NPP and SNEP framing and presents them as APDUs over USB CDC-ACM.
Recomendado
Industrial IoT Identification Node
Asset-tracking and tool-identification nodes on the factory floor use the PR5331C3HN to read MIFARE Ultralight or ISO 14443 tags on parts, totes, and consumables. Its 30 mA peak RF current draw makes it suitable for battery-assisted operation with duty-cycled polling, and its UART link integrates into the XAIPART-listed MC9S08 host family referenced for industrial IoT. The 40-VFQFN exposed pad keeps the node under 20 mm × 20 mm for inline mounting.
Recomendado
Public Transit/Event Ticketing Validator
Ticketing validators need to read both closed-loop MIFARE DESFire transit cards and open-loop EMV contactless cards at high throughput. The PR5331C3HN's integrated ISO 14443-4 layer plus on-chip DESFire handling fits this bill without an external crypto co-processor, while its 30 mA peak allows a 50 mm loop antenna to clear gate-mounted antennas during rapid swipe-as-you-go motion. The 40-VFQFN exposed pad and 3.3 V supply drop cleanly into existing gate-controller boards.
Recomendado
Healthcare / Medical Device Pairing
Medical pumps, infusion devices, and diagnostic wearables often need operator-pairing or accessory-identification via NFC. The PR5331C3HN's integrated MCU and on-chip ROM simplify IEC 62304 and FDA 21 CFR Part 820 firmware-change control, because the on-chip NFC stack is locked to NXP's released ROM. The 40-VFQFN exposed pad and 2.5-3.6 V supply fit typical 3.3 V medical device rails, and the part draws under 30 mA peak during RF transmit for battery-powered designs.
Recomendado
PC-Tethered Reader/Writer Development Tools
Designers building Linux/Android/Windows test rigs and dev kits need a tethered NFC reader that appears as a standard CCID device with no extra drivers beyond the OS stack. The PR5331C3HN qualifies for this use case because its USB full-speed device interface and integrated ROM firmware enumerate as a CCID-class reader, allowing libnfc, NXP NCI drivers, and PC/SC stacks to communicate without bespoke host glue. The 4-6 cm range with a printed-loop antenna on a 2-layer dev board gives repeatable bench characterization.
Recomendado
Resumo dos produtos recomendados
Dados de referência de engenharia para PR5331C3HN — comparação, orientação de projeto e informações de conformidade.
Guia de seleção
Comparação com alternativas
| Parâmetro | Este produto | PR5331C3HN/C350:55 | PR5331C3HN/C360:55 | PR5331C3HN/C350,55 | PR5331C3HN/C350,51 | PR5331C3HN/C360,51 | PN5331C3HN/C350,55 |
|---|---|---|---|---|---|---|---|
| Brand | NXP Semiconductors | NXP Semiconductors - same | NXP Semiconductors - same | NXP Semiconductors - same | NXP Semiconductors - same | NXP Semiconductors - same | NXP Semiconductors - same |
| Package | 40-VFQFN Exposed Pad | 40-VFQFN Exposed Pad - same | 40-VFQFN Exposed Pad - same | 40-VFQFN Exposed Pad - same | 40-VFQFN Exposed Pad - same | 40-VFQFN Exposed Pad - same | 40-VFQFN Exposed Pad - same |
| Operating Frequency | 13.56 MHz | 13.56 MHz | 13.56 MHz | 13.56 MHz | 13.56 MHz | 13.56 MHz | 13.56 MHz |
| Supply Voltage | 2.5 V to 3.6 V | 2.5 V to 3.6 V | 2.5 V to 3.6 V | 2.5 V to 3.6 V | 2.5 V to 3.6 V | 2.5 V to 3.6 V | 2.5 V to 3.6 V |
| Host Interface | USB / HSU / I2C / UART | USB / HSU / I2C / UART - same | USB / HSU / I2C / UART - same | USB / HSU / I2C / UART - same | USB / HSU / I2C / UART - same | USB / HSU / I2C / UART - same | USB / HSU / I2C / UART - same |
| Peak Current | 30 mA | 30 mA | 30 mA | 30 mA | 30 mA | 30 mA | 30 mA |
| Integrated MCU + ROM | Yes (32-bit) | Yes (32-bit) | Yes (32-bit) | Yes (32-bit) | Yes (32-bit) | Yes (32-bit) | Yes (32-bit, alternate firmware load) |
| Firmware Revision | Standard ROM baseline | Standard ROM baseline | Standard ROM baseline | Standard ROM baseline | Standard ROM baseline | Standard ROM baseline | Alternate firmware load - host driver may differ |
Principais diferenciais
- On-chip MCU with ROM firmware - no host-side protocol stack needed (vs SLRC663 (bare front-end))
- Plug-and-play USB full-speed device interface for tethered readers (vs PN532 (SPI/I2C only))
- Dual USB and HSU host links in a single 40-VFQFN footprint (vs PN5331C3HN (same package, alternate firmware))
Notas de projeto
The 40-VFQFN exposed pad must be soldered to a contiguous ground pour with at least 9 thermal vias (3×3 grid, 0.3 mm pitch, finished barrel 0.25 mm) to keep the die-to-ambient thermal rise under 25 °C during continuous RF transmit, which draws ~30 mA peak. Estimated: with theta_JA around 30 °C/W on a 4-layer board and 0.55 W dissipation, junction-to-ambient rise is approximately 16.5 °C - well within the datasheet limit, but only when the pad is properly stitched.
Place the antenna within 30 mm of the TX1/TX2 pins to minimize the loop-resistance on the 13.56 MHz tank. Avoid routing any digital traces across the antenna copper pour; keep at least 3 mm clearance. Add a pi-network footprint of 2 capacitors and 1 inductor on each TX line for production tuning of the matching circuit to the chosen antenna coil inductance (typical 1-3 µH). Datasheet reference: see the antenna matching section in NXP application note for CL/RC reader family.
Do not connect VBUS and VDD together without an inline Schottky or ferrite bead - the PR5331C3HN expects USB VBUS detection at the VBUS pin while the main regulator powers VCC. Bypass both with separate 100 nF + 4.7 µF ceramic capacitors within 1 mm of the pins. Do not leave TEST, BOOT, or the NC pins floating - they must be tied to their prescribed states (TEST floating or GND, BOOT to GND for normal operation) or the on-chip MCU may enter a test mode instead of the application ROM.
The USB DP/DM lines require a 27 Ω series resistor close to the IC plus a 90 Ω differential pull-up pair selected per USB 2.0 full-speed spec. Place these components within 5 mm of the IC pins and route DP/DM as a matched 90 Ω differential pair with reference ground plane beneath them - this is essential because USB-IF compliance fails at 480 Mbps and lower with poor differential matching, even though the NFC operation itself runs only at 13.56 MHz.
Add bulk capacitance of 22 µF tantalum or polymer on the 3.3 V VCC rail near the IC. The internal RF TX pump draws short current bursts at the carrier frequency, and insufficient bulk causes VCC droop which in turn detunes the matching network. A 10 µF ceramic + 100 nF ceramic parallel combination handles both low-frequency droop and high-frequency decoupling at the 13.56 MHz carrier.
Informações de conformidade
RoHS and lead-free per NXP product page. AEC-Q100 not applicable (consumer/industrial NFC reader IC). Halogen-free status not stated explicitly in source material - left as unknown.
