ENC424J600T-I/ML - 10/100 Ethernet Controller | Microchip
MPN: ENC424J600T-I/ML ✓ ActiveENC424J600T-I/ML Overview
An Ethernet controller is an interface IC that connects a host processor to a physical Ethernet network. In the product hierarchy, this stand-alone controller integrates functions otherwise divided among a network interface controller, media-access control, and physical-layer transceiver. ENC424J600 is designed for embedded systems whose host MCU or processor lacks an economical Ethernet interface, allowing network connectivity to be added through SPI or a parallel host bus.
Key features include an integrated 10/100 Base-T PHY, hardware cryptographic security engines, factory-programmed unique MAC addressing, packet-filtering functions, and support for auto-negotiation. The manufacturer documentation identifies a 24 Kbyte on-chip RAM buffer. These functions allow the controller to filter incoming traffic and support network management requirements while keeping host-side configuration relatively straightforward.
The ENC424J600 architecture combines a high-speed receive-path ADC, DSP-based waveform decoding, MAC functions, and PHY circuitry in one package. IEEE 802.3-compatible Ethernet operation covers 10 Mbps and 100 Mbps links, while auto-negotiation allows the PHY to participate in selecting the common link rate with the connected network equipment. The 3.3 V supply range also aligns with many embedded processor platforms.
Typical uses include industrial Ethernet gateways, embedded network appliances, programmable controllers, serial-to-Ethernet equipment, and compact monitoring systems. The controller is especially useful when a host processor already has SPI or parallel-interface resources and the board needs an autonomous 10/100 Ethernet endpoint rather than a high-speed multi-gigabit interface.
PCB implementation requires careful high-speed layout around the PHY, magnetics, clocks, and supply rails. The exposed thermal pad should be connected to the ground plane with an appropriate thermal-via arrangement, and the Ethernet magnetics and transmission-line geometry should follow the manufacturer's reference layout. Verify regulatory Ethernet compliance in the final product because controller-level IEEE support does not replace system-level EMC testing.
This product record combines the verified Microchip product information with distributor availability data, package details, and practical design guidance. It also distinguishes a genuine same-package replacement from related variants that require a different footprint, helping engineers compare procurement choices without assuming that a similar Ethernet controller is pin-compatible.
Drop-in alternatives for ENC424J600T-I/ML — 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 ENC424J600T-I/ML (same form factor and footprint) — differing in Package, Packet Filtering, Auto-Negotiation, Supply Current, Supply Voltage Range.
ENC424J600-I/ML
✅ Drop-InContact for price
View Datasheet →ENC424J600T-I/ML Specifications
| Product Type | Stand-alone 10/100 Base-T Ethernet controller |
| Ethernet Standards | IEEE 802.3 10Base-T and 100Base-TX |
| Data Rates | 10 Mbps and 100 Mbps |
| Integrated Functions | MAC and 10/100 Base-T PHY |
| Host Interface | SPI or parallel interface |
| Supply Voltage Range | 3.0 V to 3.6 V |
| Supply Current | 96 mA |
| On-Chip RAM Buffer | 24 Kbyte |
| Auto-Negotiation | Supported |
| Packet Filtering | Supported |
| Cryptographic Security Engines | Hardware implemented |
| Factory-Programmed MAC Address | Unique MAC address |
| Package | 44-VQFN exposed-pad, 8 mm x 8 mm |
| Mounting Type | Surface mount |
| Packaging | Tape and reel |
ENC424J600T-I/ML 44-vqfn exposed-pad, 8 mm x 8 mm Pin Configuration Guide
Pin configuration for ENC424J600T-I/ML (44-vqfn exposed-pad, 8 mm x 8 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 ENC424J600T-I/ML.
Refer to the datasheet for full pin configuration.
Typical Applications
ENC424J600T-I/ML is suitable for 6 applications: Industrial Ethernet Gateway, Serial-to-Ethernet Network Adapter, Embedded Monitoring and Control Node, Programmable Automation Controller, Network Appliance Management Interface, Remote Equipment Telemetry Unit.
Industrial Ethernet Gateway
The ENC424J600T-I/ML fits an industrial gateway that terminates a legacy 10/100 Ethernet link on a microcontroller-based board. Its integrated MAC and PHY reduce the need for a separate Ethernet transceiver, while SPI provides a practical host connection for processors without native Ethernet support. The controller supports 10 Mbps and 100 Mbps links, IEEE 802.3 10Base-T and 100Base-TX operation, and auto-negotiation, making it suitable for gateways handling legacy industrial traffic. Its 3.0 V to 3.6 V operating range and 96 mA specified supply current align with many embedded 3.3 V systems. The application still requires verification of the controller's operating-temperature grade and compliance of the complete Ethernet channel.
Recommended
Serial-to-Ethernet Network Adapter
ENC424J600T-I/ML can provide the network-facing section of a serial-to-Ethernet adapter when the host converts data received over SPI into Ethernet frames. The integrated MAC, PHY, packet-filtering capability, and 24 Kbyte RAM buffer support an autonomous 10/100 Ethernet endpoint while the host handles protocol conversion. Using the SPI interface avoids requiring a host with a dedicated Ethernet MAC and preserves the controller's ability to support both 10Base-T and 100Base-TX links through auto-negotiation. Since the verified power figure is 96 mA at the stated 3.0 V to 3.6 V supply range, board-level power budgeting should include the controller, magnetics, LEDs, and host circuitry.
Recommended
Embedded Monitoring and Control Node
The ENC424J600T-I/ML is appropriate for a compact monitoring node that publishes sensor or equipment data over a 10/100 Ethernet network. Its integrated MAC and PHY avoid a discrete Ethernet interface, while SPI allows a sensor-oriented microcontroller to handle acquisition and formatting independently of network traffic. Packet filtering can limit unwanted incoming traffic at the controller, and the 24 Kbyte RAM buffer provides a defined internal resource for Ethernet handling. The 10 Mbps and 100 Mbps data-rate support is adequate for typical telemetry, configuration, and supervisory traffic. For deployments spanning a wide ambient-temperature range, verify the missing operating-temperature specification and qualify the assembled node for its intended industrial environment.
Recommended
Programmable Automation Controller
The ENC424J600T-I/ML can add Ethernet communications to a programmable automation controller without requiring a processor-integrated Ethernet MAC. Its SPI or parallel host interface supports different embedded architectures, while the integrated PHY provides a direct 10/100 Base-T network endpoint. IEEE 802.3 support, auto-negotiation, and packet filtering are useful for industrial systems that must interoperate with both 10 Mbps and 100 Mbps infrastructure. The controller's 3.3 V-class supply range allows integration with standard embedded logic, subject to the host's own power sequencing. Design the Ethernet section with the manufacturer's magnetics and layout recommendations because internal controller compliance does not establish EMC performance of the complete programmable controller.
Recommended
Network Appliance Management Interface
ENC424J600T-I/ML can serve as a dedicated management-network interface in a larger appliance whose main processor focuses on primary control functions. A 10/100 Ethernet controller allows the management channel to remain separate from other high-speed connectivity while still supporting common Ethernet management infrastructure. The integrated MAC and PHY, hardware cryptographic security engines, factory-programmed unique MAC address, and packet-filtering features support secure, manageable communication at the edge. SPI provides a clean separation between the management controller and the appliance's main processor. The solution is most appropriate where 100 Mbps is sufficient and legacy 10Base-T interoperability is valuable, not where modern multi-gigabit management traffic is required.
Recommended
Remote Equipment Telemetry Unit
The ENC424J600T-I/ML supports a remote telemetry unit that sends operational measurements over standard 10/100 Ethernet rather than a proprietary serial network. The controller's integrated MAC and PHY reduce board area, and its SPI interface is suitable for a low-power acquisition processor that packages sensor data before transmission. Support for both 10Base-T and 100Base-TX through auto-negotiation improves compatibility with existing plant networks, while packet filtering provides a basic mechanism for controlling accepted traffic. Its specified 96 mA supply current should be included in the power budget alongside Ethernet magnetics and status LEDs. Before field deployment, confirm the temperature grade, Ethernet isolation requirements, surge exposure, and regulatory test results of the completed telemetry unit.
Recommended
Recommended Products Summary
Engineering reference data for ENC424J600T-I/ML — comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | ENC424J600-I/ML |
|---|---|---|
| Package | 44-VQFN exposed-pad, 8 mm x 8 mm | 44-VQFN exposed-pad, 8 mm x 8 mm |
| Brand | Microchip Technology | Microchip Technology |
| Controller Type | Stand-alone 10/100 Base-T Ethernet controller | Stand-alone Fast Ethernet controller |
| Integrated Functions | MAC and 10/100 Base-T PHY | MAC and PHY |
| Host Interface | SPI or parallel interface | SPI or parallel interface |
| Ethernet Data Rates | 10 Mbps and 100 Mbps | 10Base-T and 100Base-TX |
Key Differentiators
- Standalone Ethernet integration (vs ENC424J600-I/ML)
- Legacy industrial-network compatibility (vs ENC28J60/SS)
- PCB footprint differentiation (vs ENC424J600T-I/PT)
Design Notes
Use the Microchip DS39935B reference layout for the Ethernet PHY and magnetics interface. Place the 3.0 V to 3.6 V supply bypass capacitors close to the controller's supply pins, connect the exposed pad to ground through multiple thermal vias, and preserve controlled-impedance routing from the PHY to the isolation components. Do not treat the package exposed pad as an interchangeable substitute for a specified analog or digital ground pin without consulting the complete pin table.
Keep the Ethernet trace path between ENC424J600T-I/ML and its isolation magnetics short and continuous, and follow the manufacturer's component-placement and impedance guidance. Maintain a clear keepout around the Ethernet section, minimize test-point stubs, and avoid unrelated high-speed switching nodes beneath the controlled-impedance region. These measures reduce reflections and help preserve the margin expected from an IEEE 802.3 10Base-T and 100Base-TX design.
Budget the specified 96 mA controller supply current at the applicable operating conditions, but add magnetics, LEDs, isolation components, and any PHY-support circuitry separately. The controller accepts a 3.0 V to 3.6 V supply, so the system rail must remain inside that range across tolerance, startup, and transient conditions. Confirm that the 24 Kbyte RAM buffer's communication workload and host SPI activity do not create a host-side processing bottleneck.
Do not substitute ENC424J600T-I/PT for the /ML part: the /PT uses a 44-TQFP package, whereas ENC424J600T-I/ML uses a 44-VQFN exposed-pad package. Also do not assume ENC28J60/SS is a drop-in equivalent because its package and Ethernet feature set differ. For a production replacement to ENC424J600-I/ML, verify ordering information, temperature grade, exposed-pad construction, firmware expectations, and every pin assignment against the current manufacturer datasheet.
Compliance Information
The supplied verified data identifies IEEE 802.3 10Base-T and 100Base-TX support but does not provide RoHS, REACH, AEC-Q100, lead-free, halogen-free, or conflict-minerals declarations. AEC-Q100 is not applicable because this is a general-purpose Ethernet interface controller rather than an identified automotive-qualified ordering code.
