JHL8440-S-RKFK - Thunderbolt 4 Quad Port Controller | Intel
N.º da peça: JHL8440-S-RKFK ✓ Ativo| Qtd. | Preço unitário | Total |
|---|---|---|
| 1 | $28.5 | $28,50 |
| 10 | $26.95 | $269,50 |
| 100 | $24.75 | $2.475,00 |
| 500 | $22.4 | $11.200,00 |
| 1.000 | $19.95 | $19.950,00 |
| 3.000 | $18.1 | $54.300,00 |
JHL8440-S-RKFK Visão geral
Background Knowledge: A Thunderbolt 4 controller is a high-speed I/O interface IC that aggregates multiple industry-standard protocols - USB, DisplayPort, PCI Express, and Thunderbolt - onto a single USB Type-C connector. In the broader IC taxonomy, a Thunderbolt 4 controller is a specialized type of interface controller (an I/O Controller Interface IC) that sits between a system CPU/GPU and an external Type-C port, performing protocol translation, lane mapping, and power-role negotiation. Intel's Goshen Ridge family (JHL8440/JHL8540/JHL8340) and the older Titan Ridge (JHL7440/JHL7540/JHL7340) constitute the two principal generations of discrete Thunderbolt controllers. Compared with USB3 controllers, Thunderbolt 4 controllers expose 40 Gbps of bidirectional bandwidth and mandate stricter device-class certification by Intel.
Key features include four PCIe Gen3 lanes for downstream tunneling, dual DisplayPort 1.4a inputs supporting 8K video aggregation, integrated USB4 v2 routing logic, DMA-based tunneling for USB 3.2 Gen2x1 (10 Gbps), and Intel VT-d compatible DMA protection for downstream security. The quad-port variant supports one upstream host port and up to four downstream device-side ports, enabling multi-display docking configurations. Compliance with Thunderbolt 4 mandates USB4 Gen3x2 (20 Gbps) minimum, mandatory DMA protection, and 32 Gbps PCIe tunnel reservation.
Architecture: The JHL8440 is built on a low-power process and uses a hardened Type-C PHY plus a multi-protocol mux fabric. Boot firmware is hosted on an attached SPI flash; SMBus is used for host attach. Power delivery (PD 3.0) is mediated through a companion PD controller such as the JHL8040. The 'S-RKFK' suffix denotes the tape-and-reel, FC-CSP (Flip-Chip Chip-Scale Package) variant supplied on production reels.
Typical applications include Thunderbolt 4 docks, premium notebooks, mini-PCs, high-end motherboards, single-cable docking stations with multi-display support, and PCIe external enclosures (eGPU / NVMe). Lower-port-count variants (JHL8340, JHL8540) target two-port hosts.
Design consideration: Use the JHL8440 only when the system requires four Thunderbolt ports; the dual-port JHL8340 saves cost and PCB area in compact two-port designs. Validate PCIe lane mapping against the platform's internal topology because misrouted Gen3 lanes can halve effective throughput.
This page synthesizes Intel ARK specifications, cross-reference notes for the Goshen Ridge family, and dock-design guidance not bundled in the manufacturer datasheet.
Alternativas drop-in para JHL8440-S-RKFK — 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:
JHL8340-S-RKFK
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JHL8540-S-RKFK
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JHL7440-S-RKFK
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JHL7540-S-RKFK
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JHL8040-S-RKFK
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JHL8440-S-RKFK Especificações
| Product Collection | Thunderbolt 4 Controller (Goshen Ridge) |
| Marketing Status | Launched |
| Total Throughput | 40 Gbps bidirectional (USB4 Gen3x2 / TB4) |
| Downstream Ports | 4 (Quad Port Device) |
| PCIe Support | PCIe Gen3, 4 lanes downstream tunnel |
| DisplayPort Support | DisplayPort 1.4a (2 inputs, HBR3 8.1 Gbps) |
| USB Compatibility | USB4, USB 3.2 Gen2x1, USB 3.0/2.0 |
| Thunderbolt Compatibility | Thunderbolt 4 / Thunderbolt 3 |
| DMA Protection | Intel VT-d compatible |
| PD Support | USB Power Delivery 3.0 (via companion PD IC) |
| Encapsulamento | FC-CSP (Flip-Chip Chip-Scale Package), T&R |
| Soldering / Mounting | Surface Mount, BGA-style flip-chip |
| Status RoHS | Compliant |
| Companion PD Controller | JHL8040 (recommended) |
Guia de Configuração de Pinos do JHL8440-S-RKFK fc-csp (flip-chip chip-scale package), t&r
Configuração de pinos para JHL8440-S-RKFK (pacote fc-csp (flip-chip chip-scale package), t&r). A numeração dos pinos, funções e diagramas de conexão estão definidos no datasheet do fabricante. Consulte-o para o footprint exato e diretrizes de soldagem.
Nenhum dado detalhado de pinagem disponível para JHL8440-S-RKFK.
Consulte a ficha técnica para a configuração completa dos pinos.
Aplicações típicas
JHL8440-S-RKFK é adequado para 7 aplicaçãos: Thunderbolt 4 Docking Stations, Premium Notebooks and Mobile Workstations, Mini-PC and Small-Form-Factor Desktops, eGPU and External PCIe Enclosures, High-End Motherboards and Add-in Cards, Single-Cable Docking for Prosumer Setups, Pro-AV Production Racks and Capture Stations.
Thunderbolt 4 Docking Stations
The JHL8440 is the canonical quad-port TB4 dock controller. With four downstream Type-C ports, PCIe Gen3 x4 tunneling, and dual DisplayPort 1.4a aggregation, it supports dual 4K60 or single 8K external display outputs over a single upstream cable. Its 40 Gbps aggregate bandwidth comfortably handles daisy-chained NVMe enclosures, eGPU boxes, and high-resolution panels simultaneously. Intel TB4 certification requires VT-d DMA protection, which the JHL8440 enforces at the hardware level - critical for enterprise dock deployments where downstream PCIe devices (Wi-Fi, Ethernet, NVMe) must not compromise the host kernel.
Recomendado
Premium Notebooks and Mobile Workstations
Although the JHL8440 is quad-port (overkill for a typical laptop's two Type-C ports), it appears in flagship mobile workstations where multiple downstream ports are exposed via a multi-port side hub. Its integrated USB4 and Thunderbolt 3 backward compatibility protects users' investment in TB3 peripherals. The FC-CSP package consumes minimal PCB area, important for thin-and-light chassis. For typical two-port laptops, however, the JHL8340 dual-port variant is the more cost-effective selection while preserving TB4 cert and VT-d protection.
Recomendado
Mini-PC and Small-Form-Factor Desktops
Mini-PCs with two rear Type-C ports paired with two front ports are an ideal market for the JHL8440. The 40 Gbps bandwidth supports a charging upstream Type-C cable (PD 3.0 passthrough via JHL8040 companion), dual 4K monitor outputs, and integrated PCIe NVMe over a downstream port - all without adding a PCIe switch or external GPU. The Intel TB4 certification guarantees at least PCIe 32 Gbps reservation, important when the host CPU only allocates 4 PCIe lanes for the entire Type-C subsystem.
Recomendado
eGPU and External PCIe Enclosures
External PCIe enclosures (NVMe RAID towers, GPU boxes, video-capture racks) need the JHL8440's PCIe Gen3 x4 tunnel to support a full-bandwidth downstream device. The chip's mandatory VT-d DMA protection - required for TB4 certification - blocks malicious DMA from rogue downstream PCIe peripherals, making it suitable for enterprise and government use cases. The quad-port topology allows one downstream port dedicated to the eGPU while other ports serve keyboards, mice, and displays.
Recomendado
High-End Motherboards and Add-in Cards
Premium ATX motherboards, content-creator motherboards, and Thunderbolt add-in cards (AIC) for desktop boards use the JHL8440 to expose TB4 on the rear IO without requiring a separate PCIe card chassis. Its FC-CSP package integrates cleanly onto compact AIC PCBs. With TB4 certification guaranteeing downstream and upstream TB4 ports, builders get standardized full feature support - including mandatory 8K display tunneling via DP 1.4a HBR3 inputs.
Recomendado
Single-Cable Docking for Prosumer Setups
Prosumers and content creators want a single USB Type-C cable delivering video, data, network, and 100W charging. The JHL8440 handles this with its 40 Gbps link, dual DP1.4a tunnel, PCIe Gen3 x4 for NVMe/Ethernet, and USB4 protocol. The integrated USB 3.2 tunneling at 10 Gbps ensures legacy USB peripherals operate transparently through the dock. Designers typically implement the JHL8040 as the PD 3.0 companion for cable-orientation and role-swap handling; the JHL8440 never arbitrates PD itself but routes VBUS under JHL8040 control.
Recomendado
Pro-AV Production Racks and Capture Stations
Broadcast and pro-AV installations with multiple external capture cards, RAID arrays, and monitor feeds benefit from the JHL8440's PCIe Gen3 x4 tunnel and quad-port topology. The TB4 cert guarantees at least one PCIe 32 Gbps lane available even with USB and DisplayPort concurrent traffic, important when multiple SDI capture cards or large NVMe arrays are simultaneously streaming. The FC-CSP package is easy to integrate into dense 1U rack-blade designs.
Recomendado
Resumo dos produtos recomendados
Dados de referência de engenharia para JHL8440-S-RKFK — comparação, orientação de projeto e informações de conformidade.
Guia de seleção
Comparação com alternativas
| Parâmetro | Este produto | JHL8340-S-RKFK | JHL8540-S-RKFK | JHL7440-S-RKFK | JHL7540-S-RKFK |
|---|---|---|---|---|---|
| Brand | Intel | Intel | Intel | Intel | Intel |
| Package | FC-CSP (T&R) | FC-CSP (T&R) - same family footprint | FC-CSP (T&R) - same family footprint | FC-CSP (T&R) - Titan Ridge footprint | FC-CSP (T&R) - Titan Ridge footprint |
| Family / Generation | Goshen Ridge / TB4 | Goshen Ridge / TB4 | Goshen Ridge / TB4 | Titan Ridge / TB3 | Titan Ridge / TB3 |
| Downstream Ports | 4 (Quad) | 2 (Dual) | 2 (Dual) | 4 (Quad) | 2 (Dual) |
| Total Throughput | 40 Gbps | 40 Gbps | 40 Gbps | 40 Gbps | 40 Gbps |
| PCIe Tunnel | Gen3 x4 (32 Gbps) | Gen3 x4 (32 Gbps) | Gen3 x4 (32 Gbps) | Gen3 x4 (32 Gbps) | Gen3 x4 (32 Gbps) |
| DisplayPort | DP 1.4a HBR3 x2 | DP 1.4a HBR3 x2 | DP 1.4a HBR3 x2 (PDA) | DP 1.4 HBR3 | DP 1.4 HBR3 |
| Thunderbolt Cert | TB4 (mandatory DMA, 32G PCIe min) | TB4 | TB4 (PDA premium) | TB3 (legacy) | TB3 (legacy) |
| USB Compatibility | USB4, USB 3.2, USB 3.0/2.0 | USB4, USB 3.2 | USB4, USB 3.2 | USB 3.1, USB 3.0/2.0 (TB3 era) | USB 3.1, USB 3.0/2.0 (TB3 era) |
| Approx Unit Price (qty 1) | $28.50 | $22.00 | $23.50 | $30.00 (EOL pricing) | $25.00 (EOL pricing) |
Principais diferenciais
- Quad-port Goshen Ridge TB4 controller (vs JHL8340-S-RKFK)
- Mandatory Intel TB4 certification with VT-d DMA protection (vs RTS5490 (Realtek USB4 hub))
- High-throughput PCIe Gen3 x4 tunnel for downstream peripherals (vs JHL7440-S-RKFK (Titan Ridge TB3 quad))
- Integrated DisplayPort 1.4a HBR3 with 8K support (vs JHL7540-S-RKFK (dual-port TB3))
Notas de projeto
Do not assume any Intel Thunderbolt 4 controller handles USB Power Delivery directly. The JHL8440 routes VBUS but does not negotiate PD voltages - that is the JHL8040 (or third-party PD controller) responsibility. Forgetting the companion PD IC leaves the upstream Type-C port unable to charge the host laptop at 100W. According to Intel TB4 dock reference designs, designers must include both controllers on the same I2C/SMBus management bus and serialize cable-orientation events.
The JHL8440's FC-CSP package requires controlled-impedance routing for all PCIe and USB4 high-speed lanes (85 ohm differential for PCIe, 90 ohm for USB4). Use length-matched serpentine traces within +/- 0.15 mm tolerance. Place the companion JHL8040 PD IC within 25 mm of the upstream Type-C connector to minimize VBUS bounce and PD-message latency. Maintain a solid ground plane under the IC's flip-chip BGA pads and avoid signal via stubs on layers L2/L3.
Estimated: At full 40 Gbps aggregate throughput across 4 ports with USB and DisplayPort active, the JHL8440's internal serializer/deserializer cores generate meaningful thermal load. Without a thermal via array under the FC-CSP land pads and at least 25 cm^2 of copper pour on each side of the IC, junction temperature can exceed 95C in enclosed dock chassis. Use the FC-CSP thermal pad to a copper heatsink stud for dock designs lacking airflow.
Goshen Ridge (JHL8440/JHL8340/JHL8540) and Titan Ridge (JHL7440/JHL7540/JHL7340) are NOT pin-compatible. Designers upgrading a TB3 dock to TB4 must respin the PCB; firmware binaries also differ. According to the Intel Embedded Connectivity community thread, the two families share conceptual function but have different FC-CSP pin maps and different mandatory feature requirements (TB4 cert mandates DMA protection; TB3 does not).
TI/Intel recommends placing the SPI flash within 25 mm of the JHL8440 to minimize bootloader SPI clock skew. Use a 4-layer stack-up (top signal, ground, power, bottom signal) with the JHL8440 placed top-side over a continuous reference ground. For TB4 cert, designers must validate PCIe Gen3 transmit pre-emphasis and de-emphasis settings via Intel's Thunderbolt compliance suite before submission; mismatched CTLE settings cause certification failures and dock-reset loops.
Informações de conformidade
RoHS compliant per Mouser/Arrow listings. Lead-free assembly per JEDEC J-STD-020; FC-CSP BGA-style package. AEC-Q100 not applicable for consumer/prosumer TB4 controllers.
