NXP Semiconductors
TJA1104AHN - MACsec ASIL B 100BASE-T1 Automotive PHY | NXP
MPN: TJA1104AHN ✓ Active
In Stock
Ships in 1-3 business days
36-pin HVQFN with exposed pad Package
Contact
for pricing
MOQ: 1 |
Price updated: 2026-10-19
Volume Pricing
| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $0 | $0.00 |
| 10 | $0 | $0.00 |
| 100 | $0 | $0.00 |
| 500 | $0 | $0.00 |
| 1,000 | $0 | $0.00 |
ℹ️ All prices are in USD
TJA1104AHN Overview
The NXP Semiconductors TJA1104AHN is a MACsec-enabled, ASIL B compliant automotive Ethernet 100BASE-T1 PHY transceiver with MII, RMII and RGMII MAC interface support, housed in a 36-pin HVQFN package with exposed pad (suffix /0J tape-and-reel ordering code TJA1104AHN/0J).
A 100BASE-T1 PHY (physical layer transceiver) is the device that converts the digital media access controller (MAC) data of an automotive Ethernet controller into a single unshielded twisted-pair signal per IEEE 802.3bw (100 Mbit/s over one pair). Within the in-vehicle network hierarchy, the PHY sits between the switch or microcontroller MAC and the automotive Ethernet wiring harness, making it a foundational element of zonal and domain controller architectures.
Key features include hardware-based MACsec (IEEE 802.1AE) link-layer security, making the TJA1104 the first MACsec-enabled device in NXP's 100BASE-T1 automotive PHY family; functional safety design according to ISO 26262 meeting ASIL B; and OPEN Alliance TC-10 compliant wake-up forwarding over the Ethernet data line for low-power sleep architectures.
The TJA1104 complies with state-of-the-art conformance test specifications and provides enhanced monitoring and diagnostic features, supporting safety-critical domains such as ADAS sensor fusion, front cameras, and central gateway controllers where in-vehicle network security and functional safety must coexist.
Typical applications include secure automotive Ethernet backbones, gateway ECUs, ADAS camera and radar modules, and zonal controllers that require MACsec encryption without a separate security companion chip.
Design consideration: the TJA1104 is pin-to-pin drop-in compatible with the TJA1103 and TJA1120, allowing platform designs to scale security levels without PCB respin; verify MACsec-specific supply and reference-clock requirements against the manufacturer datasheet.
This page synthesizes distributor availability data, NXP drop-in compatibility statements, alternatives analysis, and design guidance not consolidated in the manufacturer datasheet. Pricing shown as of 2026-10-19 where available.
A 100BASE-T1 PHY (physical layer transceiver) is the device that converts the digital media access controller (MAC) data of an automotive Ethernet controller into a single unshielded twisted-pair signal per IEEE 802.3bw (100 Mbit/s over one pair). Within the in-vehicle network hierarchy, the PHY sits between the switch or microcontroller MAC and the automotive Ethernet wiring harness, making it a foundational element of zonal and domain controller architectures.
Key features include hardware-based MACsec (IEEE 802.1AE) link-layer security, making the TJA1104 the first MACsec-enabled device in NXP's 100BASE-T1 automotive PHY family; functional safety design according to ISO 26262 meeting ASIL B; and OPEN Alliance TC-10 compliant wake-up forwarding over the Ethernet data line for low-power sleep architectures.
The TJA1104 complies with state-of-the-art conformance test specifications and provides enhanced monitoring and diagnostic features, supporting safety-critical domains such as ADAS sensor fusion, front cameras, and central gateway controllers where in-vehicle network security and functional safety must coexist.
Typical applications include secure automotive Ethernet backbones, gateway ECUs, ADAS camera and radar modules, and zonal controllers that require MACsec encryption without a separate security companion chip.
Design consideration: the TJA1104 is pin-to-pin drop-in compatible with the TJA1103 and TJA1120, allowing platform designs to scale security levels without PCB respin; verify MACsec-specific supply and reference-clock requirements against the manufacturer datasheet.
This page synthesizes distributor availability data, NXP drop-in compatibility statements, alternatives analysis, and design guidance not consolidated in the manufacturer datasheet. Pricing shown as of 2026-10-19 where available.
Drop-in alternatives for TJA1104AHN — 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:
No drop-in alternatives available for this product.
Request AlternativesTJA1104AHN Specifications
| Product Type | Automotive Ethernet 100BASE-T1 PHY Transceiver |
| Data Rate | 100 Mbit/s (100BASE-T1, IEEE 802.3bw) |
| Security Feature | MACsec enabled (IEEE 802.1AE hardware encryption) |
| Functional Safety | ISO 26262 design, ASIL B compliant |
| Wake-up Feature | OPEN Alliance TC-10 compliant wake-up forwarding over Ethernet data line |
| MAC Interface Support | MII / RMII / RGMII |
| Channels | 1 |
| Package | 36-pin HVQFN with exposed pad |
| Mounting Type | Surface Mount |
| Automotive Qualification | AEC-Q100 |
| Drop-in Compatibility | TJA1103, TJA1120 |
| Diagnostics | Enhanced monitoring and diagnostic features |
| Application Domain | Automotive Ethernet, ADAS, gateways |
| RoHS Status | Compliant |
TJA1104AHN 36-pin hvqfn with exposed pad Pin Configuration Guide
Pin configuration for TJA1104AHN (36-pin hvqfn with exposed pad 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 TJA1104AHN.
Refer to the datasheet for full pin configuration.
Typical Applications
TJA1104AHN is suitable for 3 applications: Embedded Systems, IoT Devices, Industrial Control.
Embedded Systems
Core processing in embedded applications using TJA1104AHN.
IoT Devices
Smart connected devices powered by TJA1104AHN.
Industrial Control
Automation and control systems using TJA1104AHN.
What is the TJA1104AHN?
The TJA1104AHN is a NXP Semiconductors MACsec-enabled, ASIL B compliant automotive Ethernet 100BASE-T1 PHY transceiver with MII/RMII/RGMII support. It is the first MACsec-enabled device in NXP's 100BASE-T1 automotive Ethernet PHY family, is designed according to ISO 26262 to meet ASIL B, and integrates OPEN Alliance TC-10 compliant wake-up forwarding over the Ethernet data line, per NXP's official product page.
What is the price of TJA1104AHN?
Verified unit pricing for the TJA1104AHN/0J was not available in the distributor data captured as of 2026-10-19, so this page lists quote-on-request pricing. The part is distributed through DigiKey (order code 568-TJA1104AHN/0JTR-ND), Mouser, Arrow, and Newark; check those distributors for current live pricing and stock before ordering.
Where to buy TJA1104AHN online?
The TJA1104AHN can be purchased from authorized distributors including DigiKey, Mouser, Arrow.com, and Newark, all of which list the TJA1104AHN/0J variant. DigiKey stocks it under order number 568-TJA1104AHN/0JTR-ND (tape and reel). For production volumes, XAIPART offers quote-based sourcing. Availability and pricing should be confirmed with each distributor as of your order date.
Is TJA1104AHN in stock and what is the lead time?
Distributor stock status for the TJA1104AHN/0J varies by region; DigiKey, Mouser, Arrow, and Newark all list the part, indicating active distribution channels. Exact stock quantity and lead time were not captured in the verified data as of 2026-10-19. Check the distributor product pages directly for real-time inventory and lead-time estimates before committing to a production schedule.
What is the difference between TJA1104 and TJA1103?
The TJA1104 adds hardware-based MACsec (IEEE 802.1AE) link-layer security, which the TJA1103 does not have. According to NXP, the TJA1104 is drop-in compatible with the TJA1103, so both share the same package footprint and pin configuration, enabling a scalable platform design where MACsec-capable nodes use the TJA1104 and cost-sensitive non-security nodes use the TJA1103 without a PCB respin.
TJA1104 vs TJA1120 - which should I choose?
Choose the TJA1104 when in-vehicle network security is required, because it integrates MACsec hardware encryption; choose the TJA1120 when security is not needed and you want the established, cost-optimized solution. Per NXP's product page, the TJA1104 is drop-in compatible with the TJA1120, meaning the same PCB footprint supports either device - a key advantage for one-platform, multiple-security-tier automotive Ethernet programs.
What is the best drop-in replacement for TJA1104AHN?
There is no direct drop-in replacement that adds MACsec; the TJA1104 is uniquely the first MACsec-enabled NXP 100BASE-T1 automotive PHY. However, if MACsec is not required, NXP's TJA1103 and TJA1120 are officially drop-in compatible with the TJA1104 in the same package and pin configuration, per NXP's product page. Use these only when link-layer security can be dropped from the design.
Is TJA1104AHN suitable for ADAS camera applications?
Yes. The TJA1104AHN is well suited to ADAS camera and sensor modules because it combines ASIL B functional safety (ISO 26262) with enhanced monitoring and diagnostic features, and its single-pair 100BASE-T1 link reduces harness weight and cost. Hardware MACsec encryption additionally protects sensor-to-processor links in security-conscious vehicle architectures, per NXP product documentation.
Where can I download the TJA1104AHN datasheet PDF?
The TJA1104AHN datasheet PDF can be downloaded from the official NXP product page at nxp.com/part/TJA1104AHN, which links to the latest product information and documentation. Datasheet aggregators such as Octopart and DigChip also mirror the document. Always use the NXP official page to ensure you have the current, authenticated revision rather than an outdated copy.
Is TJA1104AHN AEC-Q100 qualified?
Yes. Distributor listings, including Arrow.com, describe the TJA1104AHN/0J as an automotive AEC-Q100 qualified part. Combined with its ISO 26262 ASIL B functional safety design, this qualification targets direct deployment in automotive electronic control units, gateways, ADAS nodes, and zonal controllers that demand automotive-grade reliability screening.
What MAC interface options does the TJA1104AHN support?
The TJA1104AHN supports MII, RMII, and RGMII media independent interfaces for connection to the Ethernet MAC of a host microcontroller, switch, or SoC. This flexibility per the NXP product description lets designers pair the PHY with a wide range of automotive hosts and re-use one PHY across platforms that use different MAC interface widths and clocking schemes.
How does the TJA1104 wake-up forwarding work?
The TJA1104 integrates OPEN Alliance TC-10 compliant wake-up forwarding over the Ethernet data line. This means a wake pattern received on the single twisted pair is recognized and forwarded to the system while the rest of the node remains in a low-power sleep state, enabling power-optimized domain and zonal architectures without a dedicated wake-up line, according to NXP's product page.
What are the key specifications of TJA1104AHN that engineers should know?
Key facts: NXP TJA1104AHN is a single-channel 100BASE-T1 automotive Ethernet PHY transceiver; it is MACsec enabled (first in NXP's 100BASE-T1 family), designed to ISO 26262 ASIL B, supports MII/RMII/RGMII interfaces, integrates OPEN Alliance TC-10 wake-up forwarding, is AEC-Q100 automotive qualified, comes in a 36-pin HVQFN exposed-pad package, and is drop-in compatible with TJA1103 and TJA1120, per NXP documentation.
What can replace TJA1104AHN in a design?
Replacement depends on whether MACsec security is required. With MACsec required, no verified cross-brand pin-compatible substitute appears in the available data - stay with the TJA1104 family. Without MACsec, NXP's TJA1103 and TJA1120 are official drop-in compatible alternatives in the same package. Broadcom and Marvell offer automotive 100BASE-T1 PHYs, but no pin-compatible cross-brand drop-in was verified in the retrieved data.
What is the best automotive Ethernet PHY with MACsec for gateways?
For automotive Ethernet gateways that need link-layer security at 100 Mbit/s, the NXP TJA1104 is a leading choice: it is the first MACsec-enabled device in NXP's 100BASE-T1 PHY family, meets ISO 26262 ASIL B, and its drop-in compatibility with TJA1103/TJA1120 lets one gateway platform cover secure and non-secure ports. According to NXP's product page, it also passes state-of-the-art conformance test specifications.
1 / 1