PTN3222HMJ - 1-Port eUSB2 to USB2 Redriver 480Mbps XQFN-12 | NXP
MPN: PTN3222HMJ ✓ Active| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $1.42 | $1.42 |
| 10 | $1.28 | $12.80 |
| 100 | $1.05 | $105.00 |
| 500 | $0.88 | $440.00 |
| 1,000 | $0.74 | $740.00 |
| 3,000 | $0.62 | $1,860.00 |
PTN3222HMJ Overview
What is a redriver? A redriver (signal repeater) is an analog PHY booster that sits between a transmitter and a receiver and restores signal amplitude, edge rate, and common-mode DC levels that have been degraded by lossy PCB traces, flex cables, or connectors. Redrivers are protocol-aware only at the analog level; they do not decode packets. Compared with retimers, redrivers add lower latency and consume less power, making them well-suited for short-reach links inside phones, tablets, laptops, and docking stations where the SoC integrates the USB2 controller but the physical interface must reach an external connector.
Key features include selectable equalizer gain, transmit de-emphasis, and output swing tuning controlled through I2C or pin straps. The PTN3222HMJ supports USB2 Link Power Management (LPM) L1/L2 states, autonomous behavior when no I2C host is present, and hot-plug detection. Two power rails are required: VDD3V3 (3.3 V) and VDD1V8 (1.8 V). Internal low-dropout regulators and level shifters isolate the eUSB2 domain from the USB2 domain, allowing direct connection to advanced-process-node SoCs whose I/O cells operate below 1.8 V.
The PTN3222HMJ uses an analog CTLE (continuous-time linear equalizer) on each receiver path and a programmable driver on each transmit path, providing adaptive compensation without protocol intervention. Per USB-IF compliance, the device meets USB2 High-Speed near-end and far-end signal-quality masks across typical mobile-platform loss budgets of 6-9 dB at 240 MHz.
Typical applications include smartphones with internal USB-C ports, tablets, laptops, 2-in-1 detachables, docking stations, automotive infotainment USB subsystems, and any compact SoC design that must bridge an advanced-process eUSB2 die pad to a legacy USB2 connector over a lossy mid-board trace.
Designers should allocate 50 ohms controlled-impedance routing on both eUSB2 and USB2 differential pairs, place 100 nF decoupling on each VDD pin within 1 mm of the package, and avoid via stubs on the high-speed path. For pin-strap configurations, leave unused strap pins floating or tie to ground per the datasheet's configuration table.
This page synthesizes distributor pricing, drop-in alternatives, application guidance, and design notes not consolidated in the manufacturer datasheet.
Drop-in alternatives for PTN3222HMJ — same package, pin-to-pin compatible. Different-package parts requiring PCB rework are excluded.
Quick Comparison Tool — Select alternative parts for side-by-side comparison:
PTN3222UK/AZ
✅ Drop-In📋 Reference alternative (not in catalog)
PTN3222HM
✅ Drop-In📋 Reference alternative (not in catalog)
PTN3222HK
✅ Drop-In📋 Reference alternative (not in catalog)
PTN36043AUK
✅ Drop-In📋 Reference alternative (not in catalog)
TUSB211IRWBR
✅ Drop-In📋 Reference alternative (not in catalog)
PTN3222HMJ Specifications
| Function | 1-port eUSB2 to USB2 redriver (repeater) |
| Number of Channels | 1 |
| Data Rate (High Speed) | 480 Mbps |
| Data Rate (Full Speed) | 12 Mbps |
| Data Rate (Low Speed) | 1.5 Mbps |
| Supported Roles | Host repeater, device repeater, dual-role repeater |
| USB Compliance | USB2 compliant; eUSB2 conformant |
| Link Power Management | L1, L2 (USB2 LPM) |
| Supply Voltage VDD3V3 | 3.3 V (typical) |
| Supply Voltage VDD1V8 | 1.8 V (typical) |
| Package | XQFN-12 (1.75 mm x 2.2 mm, 0.4 mm pitch) |
| Mounting Type | Surface Mount |
| RoHS Status | Compliant |
| Configuration Interface | I2C and pin-strap |
PTN3222HMJ Pin Configuration
| Pin 1 | VDD1V8 — 1.8 V supply for eUSB2 domain |
| Pin 2 | eUSB2_DN — eUSB2 differential data negative (to SoC) |
| Pin 3 | eUSB2_DP — eUSB2 differential data positive (to SoC) |
| Pin 4 | GND — Ground |
| Pin 5 | REF_RES — External reference resistor |
| Pin 6 | SDA — I2C data (or configuration strap) |
| Pin 7 | SCL — I2C clock (or configuration strap) |
| Pin 8 | VDD3V3 — 3.3 V supply for USB2 domain |
| Pin 9 | USB2_DP — USB2 differential data positive (to connector) |
| Pin 10 | USB2_DN — USB2 differential data negative (to connector) |
| Pin 11 | GND — Ground |
| Pin 12 | NC — Not connected (per datasheet) |
Typical Applications
PTN3222HMJ is suitable for 6 applications: Smartphone USB-C Port Interface, Tablet and 2-in-1 Detachable Designs, Laptop and Ultrabook USB-C Implementation, Docking Station USB2 Downstream Ports, Automotive Infotainment USB Subsystems, IoT Gateway with USB2 Peripheral Connectivity.
Smartphone USB-C Port Interface
The PTN3222HMJ bridges the sub-1 V eUSB2 die pad of a smartphone application processor to an external USB-C receptacle over 2-5 cm of mid-board routing. Its 480 Mbps High-Speed capability preserves USB2 signaling for charging, ADB debugging, and OTG peripherals, while integrated level translation eliminates the discrete translator that older designs required. Programmable equalization recovers the 6-9 dB of loss typical of mobile-platform flex-and-PCB stacks, restoring USB-IF High-Speed eye margins at the connector.
Recommended
Tablet and 2-in-1 Detachable Designs
Tablets and detachable 2-in-1 PCs route USB2 from the SoC to side-mounted USB-C ports across 8-15 cm of internal routing that exceeds native USB2 loss budgets at 240 MHz. The PTN3222HMJ's CTLE equalizer and programmable de-emphasis recover signal integrity across this longer channel, while its small 1.75x2.2 mm XQFN-12 footprint fits beside the SoC on the main PCB. Dual-role repeater support simplifies designs that alternate between host and device operation through a single port.
Recommended
Laptop and Ultrabook USB-C Implementation
Modern laptops route USB2 from a sub-1 V SoC pad through a multilayer main board to side or rear USB-C connectors, often passing through board-to-board connectors that add 1-2 dB of loss. The PTN3222HMJ sits adjacent to the SoC and reconditions the eUSB2 transmit signal before it travels to the connector, ensuring USB2 High-Speed eye compliance at the receptacle. Pin-strap configuration avoids I2C host overhead, simplifying BIOS/firmware dependencies for cost-sensitive ultrabook SKUs.
Recommended
Docking Station USB2 Downstream Ports
Docking stations aggregate multiple USB2 downstream ports from a single upstream USB-C or proprietary connector, often using long internal cables or flex assemblies. The PTN3222HMJ drives each downstream port from the docking SoC, restoring high-speed edge rates that would otherwise degrade across the internal harness. Its host-repeater mode ensures that connected peripherals enumerate correctly even when the upstream host is a USB-C alternate-mode source.
Recommended
Automotive Infotainment USB Subsystems
In automotive infotainment head units, the SoC sits on the main PCB while USB-C receptacles are panel-mounted several centimeters away on the dashboard. The PTN3222HMJ reconditions USB2 high-speed signals across this lossy internal path, supporting CarPlay, Android Auto, and USB media playback at 480 Mbps. The industrial temperature grade suits most cabin environments, while the integrated Link Power Management L1/L2 states minimize quiescent draw when no device is connected, preserving battery life in parked-vehicle scenarios.
Recommended
IoT Gateway with USB2 Peripheral Connectivity
Industrial IoT gateways and edge nodes often include USB2 host ports for configuration, firmware update, or legacy peripheral support. The PTN3222HMJ enables a compact gateway design where the main processor operates from a sub-1 V core voltage but still exposes a fully compliant USB2 host or device port over a few centimeters of PCB routing. The redriver's small XQFN-12 package and pin-strap configurability minimize BOM and firmware burden for cost-sensitive industrial SKUs.
Recommended
Recommended Products Summary
Engineering reference data for PTN3222HMJ — comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | PTN3222UK/AZ | PTN3222HM | PTN3222HK | PTN36043AUK | TUSB211IRWBR |
|---|---|---|---|---|---|---|
| Package | XQFN-12 (1.75x2.2 mm, 0.4 mm pitch) | WLCSP-12 (1.55x1.18 mm, 0.35 mm pitch) | XQFN-12 (1.75x2.2 mm) - same | XQFN-12 (1.75x2.2 mm) - same | WLCSP-12 | XQFN-12 (1.6x1.6 mm) |
| Brand | NXP Semiconductors | NXP Semiconductors | NXP Semiconductors | NXP Semiconductors | NXP Semiconductors | Texas Instruments |
| Function | eUSB2 to USB2 redriver | eUSB2 to USB2 redriver | eUSB2 to USB2 redriver | eUSB2 to USB2 redriver | USB-C redriver (USB3.2-capable) | USB2 redriver (no eUSB2 receive) |
| Maximum Data Rate | 480 Mbps (USB2 High Speed) | 480 Mbps | 480 Mbps | 480 Mbps | 10 Gbps (USB3.2) | 480 Mbps |
| eUSB2 Receive Path | Yes (sub-1 V SoC pad support) | Yes | Yes | Yes | Yes (NXP USB-C eUSB2) | No - requires external level translator |
| Supply Rails | VDD3V3 + VDD1V8 | VDD3V3 + VDD1V8 | VDD3V3 + VDD1V8 | VDD3V3 + VDD1V8 | VDD3V3 + VDD1V8 | Single 3.3 V |
| Configuration Interface | I2C + pin-strap | I2C + pin-strap | I2C + pin-strap | I2C + pin-strap | I2C + pin-strap | Pin-strap only |
| Approx. Unit Price (qty 1000) | $0.74 USD | $0.78 USD (estimated, similar tier) | $0.72 USD (estimated same die) | $0.74 USD (estimated same die) | $1.20 USD (estimated, USB3 part) | $0.95 USD (TI USB2 redriver) |
Key Differentiators
- Integrated eUSB2 voltage-level translation (vs TUSB211IRWBR)
- Dual-role repeater support (vs PTN3222UK/AZ)
- USB2 L1 and L2 Link Power Management (vs TUSB211IRWBR)
- I2C plus pin-strap configurability (vs TUSB211IRWBR)
Design Notes
Route eUSB2 and USB2 differential pairs with 90-ohm differential impedance and keep intra-pair skew under 4 ps to preserve USB2 High-Speed eye margins. Place the PTN3222HMJ within 5 mm of the SoC eUSB2 pad to minimize stub length on the high-speed path. Avoid via stubs on both differential pairs; if layer transitions are unavoidable, use micro-via-in-pad construction.
Decouple VDD3V3 and VDD1V8 with 100 nF X7R ceramic capacitors placed within 1 mm of each supply pin. Add a 4.7 uF bulk capacitor on each rail near the redriver to suppress transient droop during USB2 LPM exit events. Sequence VDD1V8 before or simultaneously with VDD3V3 to avoid latch-up of internal level shifters.
Do not leave REF_RES floating; the external reference resistor (typically 10 kohm 1%) sets internal bias currents and must be tied to ground as shown in the datasheet reference schematic. Misconfiguration of pin straps when not using I2C can lock the redriver in an unintended gain mode, so verify strap states against the PTN3222 datasheet configuration table before PCB fab release.
Estimated: at 480 Mbps, 6 dB of channel loss at 240 MHz produces approximately 35-40 ps of jitter through a typical FR-4 stackup. The PTN3222HMJ's CTLE recovers 3-5 dB of this loss, restoring the USB-IF High-Speed eye mask with 10-15% margin. For channels longer than 10 cm, simulate with the IBIS-AMI model before committing to layout.
Compliance Information
RoHS and REACH compliant per NXP product page. AEC-Q100 not qualified for the HMJ variant - contact NXP for automotive-grade PTN3222 family members. Halogen-free status not explicitly stated in verified web data; flagged unknown.
