JHL7440-S-LMHZ - Thunderbolt 3 Controller, Dual Port BGA | Intel
MPN: JHL7440-S-LMHZ ✓ Active| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $48.5 | $48.50 |
| 10 | $44.2 | $442.00 |
| 100 | $39.1 | $3,910.00 |
| 500 | $34.65 | $17,325.00 |
| 1,000 | $30.95 | $30,950.00 |
JHL7440-S-LMHZ Overview
A Thunderbolt 3 controller is a high-speed protocol-aggregating interface IC that consolidates multiple peripheral buses (PCI Express, DisplayPort, USB) into a single USB-C cable carrying up to 40 Gbps of combined traffic. Controllers such as the JHL7440 sit between a host system's PCIe/DisplayPort/USB controllers and an external Type-C connector, performing protocol multiplexing, link training, power delivery negotiation (USB PD), and tunneled-stream management. The JHL7440 specifically implements Alpine Ridge-generation features including DP 1.4 alt-mode and USB PD 3.0, and in the Dual Port configuration can drive two Thunderbolt 3 ports from a single chip.
Key distinguishing features of the JHL7440-S-LMHZ include 40 Gbps Thunderbolt 3 line rate per port, integrated DisplayPort 1.4 receiver capable of 8K HDR outputs via HBR3 (8.1 Gbps per lane, 32.4 Gbps aggregated), PCIe 3.0 x4 host upstream interface, USB 3.1 Gen 2 (10 Gbps) downstream support, and integrated USB Power Delivery 3.0 controller. The 337-ball FC-CSP package utilizes an exposed-die land-grid array for the shortest possible signal paths to the high-speed SerDes, which is essential for multi-Gbps link training.
Typical applications include Thunderbolt 3 docking stations, NVMe SSD enclosures that saturate 40 Gbps pipes, 8K DisplayPort adapters and video capture cards, high-end workstation motherboards, and eGPU enclosures. The Dual Port configuration is especially popular in docking stations where one port connects to a host laptop and the other to downstream peripherals.
When designing with the JHL7440, PCB layout must allocate separate reference-clock domains, keep the high-speed TX/RX pairs length-matched within sub-millimeter tolerances, and provide a clean PCIe 3.0 host connection - any signal-integrity issue at 10+ Gbps will surface as Thunderbolt link-training failures.
This page synthesizes verified distributor pricing, drop-in alternatives, and practical Thunderbolt 3 design considerations not found in any single distributor catalog.
Drop-in alternatives for JHL7440-S-LMHZ — same package, pin-to-pin compatible. Different-package parts requiring PCB rework are excluded.
Variants in this series
Same-series models that are drop-in compatible with JHL7440-S-LMHZ (same form factor and footprint) — differing in DisplayPort Support, Package, USB Power Delivery, USB Support.
Quick Comparison Tool — Select alternative parts for side-by-side comparison:
JHL7440-S-LMHZ
✅ Drop-In✓ In Stock
$30.95 / Unit
View Datasheet →JHL7440-S-LMCP
✅ Drop-In ⚠️ Specs Unverified📋 Reference alternative (not in catalog)
JHL7440-S-MMDQ
✅ Drop-In ⚠️ Specs Unverified📋 Reference alternative (not in catalog)
JHL7440
✅ Drop-In✓ In Stock
$17.6 / Unit
View Datasheet →JHL7440-S-LMDP
✅ Drop-In ⚠️ Specs Unverified📋 Reference alternative (not in catalog)
JHL7440-S-LMGS
✅ Drop-In ⚠️ Specs Unverified📋 Reference alternative (not in catalog)
JHL7440-S-LMHZ Specifications
| Product Type | Thunderbolt 3 Controller IC |
| Series | JHL7440 (Alpine Ridge) |
| Configuration | Dual Port Device |
| Thunderbolt Line Rate | 40 Gbps (bi-directional, per port) |
| USB Support | USB 3.1 Gen 2 (10 Gbps), USB 2.0 |
| DisplayPort Support | DP 1.4, HBR3 (8.1 Gbps/lane), 8K HDR capable |
| PCIe Host Interface | PCIe 3.0 (up to x4) |
| USB Power Delivery | USB PD 3.0 integrated |
| Package | FC-CSP BGA-337 (10.7 x 10.7 mm) |
| Mounting Type | Surface Mount (BGA) |
| Lead Free / RoHS | Yes (RoHS compliant) |
| Tray Packaging | Tray (per JLCPCB and PCB Electronics listings) |
JHL7440-S-LMHZ fc-csp bga-337 (10.7 x 10.7 mm) Pin Configuration Guide
Pin configuration for JHL7440-S-LMHZ (fc-csp bga-337 (10.7 x 10.7 mm) package). Pin numbering, functions, and connection diagrams are defined in the manufacturer datasheet. Refer to it for the exact footprint and soldering guidelines.
No detailed pinout data available for JHL7440-S-LMHZ.
Refer to the datasheet for full pin configuration.
Typical Applications
JHL7440-S-LMHZ is suitable for 7 applications: Thunderbolt 3 Docking Stations, 40 Gbps NVMe SSD Enclosures, 8K DisplayPort Adapters, External GPU (eGPU) Enclosures, Workstation Motherboards, Thunderbolt 3 Video Capture Cards, Thunderbolt 3 KVM Switches and Sharing Devices.
Thunderbolt 3 Docking Stations
The JHL7440-S-LMHZ Dual Port configuration is the industry-standard controller for TB3 docking stations. With 40 Gbps per port, integrated PCIe 3.0 x4 upstream, and DP 1.4 alt-mode, one chip can drive two downstream TB3 ports plus the host link - dropping BOM cost versus two single-port controllers. Designers route the PCIe 3.0 edge to the host chipset, expose the dual Type-C ports to the user, and rely on the integrated USB PD 3.0 controller for laptop charging up to 100 W. Compared to the single-port JHL7340, this part halves the controller count for dual-port docks.
Recommended
40 Gbps NVMe SSD Enclosures
In NVMe SSD enclosures the JHL7440-S-LMHZ bridges an M.2 PCIe 3.0 x4 SSD to the Thunderbolt 3 host at line rate. Real-world benchmarks (Acasis TBU401, JEYI) sustain ~3 GB/s read throughput on a JHL7440-based enclosure - roughly 50% faster than the 20 Gbps ASM2464PD-based USB4 enclosures. The Dual Port variant lets OEM designs expose one TB3 upstream and one downstream daisy-chain port, so the enclosure can sit in a chain with a monitor. Thermal design is non-trivial: at sustained 40 Gbps the controller dissipates several watts and needs a thermal pad to the enclosure chassis.
Recommended
8K DisplayPort Adapters
Thunderbolt 3 to dual DisplayPort adapters leverage the JHL7440's DP 1.4 receiver and HBR3 (8.1 Gbps/lane) to drive two 4K HDR displays, or one 8K HDR display at 60 Hz. Reference designs such as the Wavlink WL-UTA21D use the JHL7440 to convert a single TB3 input into two DP 1.4 outputs with HDCP 2.2 support for protected content. Designers must preserve the DP alt-mode AUX/DDC channels in PCB layout; the controller's integrated DPCD buffer minimises external parts.
Recommended
External GPU (eGPU) Enclosures
eGPU enclosures depend on the JHL7440-S-LMHZ's PCIe 3.0 x4 tunnel to deliver the lane budget a discrete GPU needs. With DP 1.4 alt-mode simultaneously carried over the same USB-C cable, the GPU can drive an attached monitor through the enclosure without a separate display-port cable. The Dual Port variant allows one port to the host and a daisy-chain port for additional TB3 devices, which is essential for storage + GPU combinations.
Recommended
Workstation Motherboards
High-end workstation and content-creation motherboards integrate the JHL7440-S-LMHZ to expose two native Thunderbolt 3 ports - eliminating the need for a TB3 add-in card. The PCIe 3.0 x4 upstream interface plugs directly into the PCH, and the integrated USB PD 3.0 controller supports laptop charging on the front-panel Type-C connector. Workstation-class boards value the dual-port configuration because it halves the PCB area used for TB3 versus two single-port controllers.
Recommended
Thunderbolt 3 Video Capture Cards
Professional video-capture cards use the JHL7440-S-LMHZ to ingest two simultaneous DisplayPort 1.4 streams (one 8K or two 4K HDR sources) and tunnel them to a workstation via 40 Gbps Thunderbolt 3. The integrated DP 1.4 receiver with HBR3 (32.4 Gbps aggregate) and the controller's bandwidth headroom make it ideal for uncompressed 4K60 capture workflows. Design teams typically combine the JHL7440 with an HDMI-to-DP bridge chip and a PCIe DMA controller for host DMA.
Recommended
Thunderbolt 3 KVM Switches and Sharing Devices
Some KVM and peripheral-sharing products use the JHL7440-S-LMHZ Dual Port controller to share a high-end workstation between two laptops, with both laptops connecting via TB3 and the workstation peripherals (display, USB, storage) downstream. The 40 Gbps per port and integrated USB 3.1 Gen 2 hub logic enable transparent switching with sub-second device re-enumeration. Compared to lower-bandwidth USB-only KVMs, TB3-based designs preserve full SSD throughput and DP 1.4 video between hosts.
Recommended
Recommended Products Summary
Engineering reference data for JHL7440-S-LMHZ — comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | JHL7440-S-LMCP | JHL7440-S-MMDQ | JHL7440 | JHL7440-S-LMDP | JHL7440-S-LMGS |
|---|---|---|---|---|---|---|
| Brand | Intel | Intel | Intel | Intel | Intel | Intel |
| Package | FC-CSP BGA-337 (10.7 x 10.7 mm) | FC-CSP BGA-337 - same | FC-CSP BGA-337 - same | FC-CSP BGA-337 - same | FC-CSP BGA-337 - same | FC-CSP BGA-337 - same |
| Configuration | Dual Port Device | Dual Port Device | Dual Port Device | Dual Port Device | Dual Port Device | Dual Port Device |
| Thunderbolt Line Rate (per port) | 40 Gbps | 40 Gbps | 40 Gbps | 40 Gbps | 40 Gbps | 40 Gbps |
| DisplayPort Support | DP 1.4 (HBR3) | DP 1.4 (HBR3) | DP 1.4 (HBR3) | DP 1.4 (HBR3) | DP 1.4 (HBR3) | DP 1.4 (HBR3) |
| PCIe Host Interface | PCIe 3.0 up to x4 | PCIe 3.0 up to x4 | PCIe 3.0 up to x4 | PCIe 3.0 up to x4 | PCIe 3.0 up to x4 | PCIe 3.0 up to x4 |
| USB Power Delivery | USB PD 3.0 | USB PD 3.0 | USB PD 3.0 | USB PD 3.0 | USB PD 3.0 | USB PD 3.0 |
| RoHS Compliant | Yes | Yes | Yes | Yes | Yes | Yes |
Key Differentiators
- Single-chip Dual Port Thunderbolt 3 (vs DSL6540 (single-port Alpine Ridge))
- Higher bandwidth than USB4-only controllers (vs ASM2464PD (USB4 SSD controller))
- Integrated USB PD 3.0 with 100 W charging (vs RTS5490 (USB4 hub controller))
- DisplayPort 1.4 alt-mode with HBR3 (vs JHL7340 (single-port TB3 sibling))
Design Notes
The JHL7440's high-speed SerDes pairs (Thunderbolt TX/RX up to 10.3125 GHz fundamental) require length-matched differential routing within +/- 0.05 mm tolerance, controlled-impedance 85-ohm differential traces (sometimes 90 ohms per Intel reference), and a continuous reference plane on layer 2 - split-reference planes will cause link-training failures at 40 Gbps. Estimate: a 1 mm trace mismatch at 10 GHz produces roughly 10 ps of skew, exceeding the budget for TB3 link training.
Estimated: at sustained 40 Gbps operation across both ports, the JHL7440 dissipates approximately 3-5 W depending on tunnel-mix. Without a thermal pad to the enclosure chassis or chassis-coupler the controller junction temperature may exceed 100C in a closed dock. Recommend a 3 W/mK thermal interface material and at least 100 mm² of copper pour on the top side under the BGA keep-out area for acceptable production margins.
The JHL7440 requires multiple supply rails (typically 0.9 V core, 1.8 V analog, 3.3 V I/O, and a Thunderbolt AUX 3.3 V) - each must be decoupled with 0.1 µF X7R capacitors placed within 1 mm of the BGA balls, plus bulk decoupling near the regulator output. Power-up sequencing requires core rails before analog; failure to sequence correctly causes latch-up. Use Intel's reference PDN layout from the Thunderbolt 3 developer schematic as the authoritative example.
TB3 link training is sensitive to crosstalk between adjacent differential pairs - recommended pair-to-pair spacing is at least 3x the trace width. Avoid routing TB3 traces across package boundaries; add guard vias stitching the reference plane around each high-speed bundle. Reference the Intel Thunderbolt 3 layout checklist and any USB-IF compliance test fixtures before taping out the board.
Do not confuse the JHL7440 (Alpine Ridge, second-gen TB3) with the JHL7540 (Titan Ridge, third-gen TB3) - although both use BGA-337 packages, the firmware, register map, USB PD revision, and DP alt-mode implementation are different. A JHL7540 firmware flashed onto a JHL7440 will brick the controller. Also beware of counterfeit JHL7440 chips sold on grey-market channels; always procure from authorized distributors (Mouser, JLCPCB) and verify the laser-etched lot code matches Intel's official records.
Compliance Information
RoHS and lead-free compliance confirmed by JLCPCB and PCB Electronics distributor listings (Intel -LMHZ suffix designates the RoHS-compliant configuration). REACH, AEC-Q100, halogen-free, and conflict-minerals status is NOT listed in the verified distributor data; these should be confirmed directly from Intel compliance letters for production deployment. AEC-Q100 not applicable - this is a commercial Thunderbolt controller IC.
