ENC424J600-I/ML 10/100 Ethernet Controller | Microchip
MPN: ENC424J600-I/ML ✓ Active| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $6.187 | $6.19 |
| 10 | $0 | $0.00 |
| 100 | $0 | $0.00 |
| 500 | $0 | $0.00 |
| 1,000 | $0 | $0.00 |
ENC424J600-I/ML Overview
What is an Ethernet controller? An Ethernet controller is an interface IC that connects an embedded processor or microcontroller to an Ethernet physical network. This particular device combines a Media Access Control layer, or MAC, with a physical-layer transceiver, or PHY, allowing a host processor to exchange Ethernet traffic through SPI or a parallel host interface. It supports the IEEE 802.3 requirements applicable to 10Base-T and 100Base-TX Ethernet, including optional auto-negotiation behavior described by the manufacturer.
The ENC424J600 family is intended to reduce the host-side implementation burden of a wired Ethernet connection. The manufacturer describes a low-cost stand-alone controller with packet filtering and a factory-programmed unique MAC address in product-page results. The supplied search data also identifies a 24-Kbyte on-chip RAM buffer for the family, while the ENC624J600 family shares the broader 10/100 Ethernet controller positioning. Exact feature availability for this orderable MPN should be confirmed in the manufacturer datasheet.
The controller is relevant to embedded systems that need 10/100 Ethernet connectivity without implementing the physical network interface directly. Its SPI interface is useful for microcontrollers with limited parallel I/O, while the parallel interface can serve systems with an external bus. The -45°C to +85°C operating range covers industrial temperature requirements, subject to the complete electrical and qualification limits in the datasheet.
Typical uses include industrial monitoring equipment, embedded control systems, data-acquisition units, factory interfaces, and network-connected embedded products. The Ethernet PHY requires appropriate magnetics, routing, termination, and layout implementation; the controller does not eliminate the need for a compliant external network interface.
For a new design, verify the exact package dimensions, pin names, exposed-pad connection, clock requirements, host protocol, and recommended magnetic components in the Microchip datasheet. The 3 V supply range and -45°C to +85°C rating are useful starting constraints, but they should not replace review of absolute maximum ratings, timing, reset behavior, and Ethernet system requirements.
Drop-in alternatives for ENC424J600-I/ML — same package, pin-to-pin compatible. Different-package parts requiring PCB rework are excluded.
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Request AlternativesENC424J600-I/ML Specifications
| Product Type | Stand-alone 10/100 Base-T Ethernet controller |
| Ethernet Support | 10Base-T and 100Base-TX Ethernet |
| Data Rate | 10 Mbps |
| Supply Voltage Range | 3 V to 3.6 V |
| Supply Current | 117 mA |
| Operating Temperature Range | -45°C to +85°C |
| Package | 44-QFN |
| Package Dimensions | 8 mm x 8 mm |
| Integrated MAC | Yes |
| Integrated PHY | Yes |
| Host Interface | SPI or parallel interface |
| Standard Compliance | IEEE 802.3 applicable to 10Base-T and 100Base-TX Ethernet |
| Auto-Negotiation | Supported |
| Packet Filtering | Multiple packet filtering schemes |
| Unique MAC Address | Factory preprogrammed unique MAC address |
| On-Chip RAM Buffer | 24 Kbyte |
ENC424J600-I/ML 8 mm x 8 mm Pin Configuration Guide
Pin configuration for ENC424J600-I/ML (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 ENC424J600-I/ML.
Refer to the datasheet for full pin configuration.
Typical Applications
ENC424J600-I/ML is suitable for 6 applications: Industrial Monitoring Equipment, Embedded Data Acquisition, Factory Automation Gateways, Networked Sensor Controllers, Embedded Network HMI, Telecommunications Support Equipment.
Industrial Monitoring Equipment
The ENC424J600-I/ML fits industrial monitoring equipment that needs a compact wired 10/100 Ethernet data path. Its integrated MAC and PHY reduce the number of network-interface functions required beside the host processor, while the 3 V to 3.6 V supply range and -45°C to +85°C specification provide useful environmental boundaries. A typical design connects the controller through SPI to a microcontroller, adds Ethernet magnetics and regulated decoupling, and uses firmware to manage interrupts, buffering, link status, and telemetry. The controller does not replace industrial surge protection, isolation, or qualification; those measures must be selected according to the installation environment and interface requirements.
Recommended
Embedded Data Acquisition
For embedded data-acquisition equipment, ENC424J600-I/ML provides a standard 10/100 Ethernet interface for transferring measurement data to a host, gateway, or service equipment. The SPI option is particularly useful when the data-acquisition controller has limited external bus pins, while the parallel option can serve systems with an existing host interface. Designers should budget for packet buffering, interrupt latency, firmware protocol handling, and Ethernet physical-layer implementation. The verified specifications establish 10 Mbps data-rate information, 117 mA supply current, and the 3 V to 3.6 V supply range, but application-specific throughput and timing must be validated in firmware and hardware.
Recommended
Factory Automation Gateways
ENC424J600-I/ML is applicable to factory gateways that bridge serial or control data onto a 10/100 Ethernet network. The integrated MAC and PHY allow the gateway to avoid a separate Ethernet controller when the host already has a suitable SPI or parallel interface. A robust factory design still needs galvanic isolation or surge protection where required, carefully controlled Ethernet routing, suitable magnetic components, and a recovery strategy for cable or link faults. The stated -45°C to +85°C range supports consideration for industrial environments, but it does not replace the system's overall thermal, vibration, EMC, or safety qualification.
Recommended
Networked Sensor Controllers
The ENC424J600-I/ML can provide a wired network connection for a sensor controller that must report measurements over 10/100 Ethernet. In a sensor-oriented design, the Ethernet controller handles frame processing and physical-layer communication while the host manages sampling, calibration, buffering, and application data. SPI connectivity can simplify integration with small microcontrollers and reduce host pin usage. Designers should account for deterministic interrupt behavior, packet-buffer occupancy, network traffic bursts, and the controller's specified 117 mA supply current. External network magnetics and a qualified Ethernet layout remain necessary to achieve reliable physical-layer operation.
Recommended
Embedded Network HMI
ENC424J600-I/ML is suitable for embedded human-machine interfaces that need Ethernet connectivity for configuration, status reporting, or remote control. The controller can operate as a standalone Ethernet interface beside a host processor, and the SPI option is useful when the display controller has limited external interface pins. Firmware should define packet formats, authentication or filtering requirements, link recovery behavior, and update mechanisms appropriate to the HMI. The 44-QFN 8 mm x 8 mm package supports compact designs, but exposed-pad thermal performance, copper area, and the manufacturer's recommended layout must be evaluated under the product's actual heat and airflow conditions.
Recommended
Telecommunications Support Equipment
ENC424J600-I/ML can support low- and medium-rate management or service interfaces in telecommunications support equipment. Its integrated 10/100 Ethernet MAC and PHY reduces the external network-interface component count, while SPI or parallel host connectivity allows flexible attachment to a control processor. The supplied -45°C to +85°C specification supports consideration in extended-temperature equipment, although the final product must address EMC, surge, grounding, and isolation requirements. Because the verified results do not provide a complete telecom qualification, designers should use the manufacturer datasheet and system-level testing to confirm packet timing, clocking, reset behavior, and compliance.
Recommended
Recommended Products Summary
Engineering reference data for ENC424J600-I/ML — comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product |
|---|---|
| Brand | Microchip Technology |
| Package | 44-QFN, 8 mm x 8 mm |
| Ethernet Support | 10Base-T and 100Base-TX Ethernet |
| Data Rate | 10 Mbps |
| Supply Voltage Range | 3 V to 3.6 V |
| Supply Current | 117 mA |
| Operating Temperature Range | -45°C to +85°C |
| Host Interface | SPI or parallel interface |
| Integrated MAC and PHY | Yes |
| On-Chip RAM Buffer | 24 Kbyte |
| Single-Unit Price | $6.187 as of 2026-10-23 |
| Drop-In Replacement | No verified drop-in replacement found |
Key Differentiators
- Integrated MAC and PHY in one controller (vs DM9051)
- SPI or parallel host-interface choice (vs ENC424J600-I/PT)
- Specified industrial temperature operation (vs DM9051)
Design Notes
Use the Microchip ENC424J600 reference layout as the starting point for the 44-QFN footprint and Ethernet circuitry. Keep the controller's supply decoupling close to its power pins, preserve the manufacturer-recommended exposed-pad connection, and route Ethernet differential pairs as a controlled impedance pair. The verified data does not specify trace lengths, impedance values, or via counts, so obtain those values from the datasheet rather than estimating them.
Design the 3 V to 3.6 V rail with transient margin and verify the controller's 117 mA supply-current figure against the actual operating mode in the datasheet. Separate sensitive analog or clock supplies where applicable, and verify startup sequencing, reset release, and current limits before power is applied to a populated board. Do not infer maximum current or decoupling values from the distributor summary alone.
The biggest integration risks are treating a functional Ethernet alternative as a pin-compatible replacement and omitting the external physical network implementation. ENC424J600-I/PT is a related Microchip variant but uses a different package, while DM9051 has a different pinout and driver according to the supplied cross-reference data. Validate package land patterns, firmware, reset timing, PHY support, magnetics, and EMC requirements before committing to any substitution.
The 44-QFN package is compact and its exposed-pad thermal path must be considered in sustained Ethernet operation. Estimate junction temperature from actual input voltage, output behavior, ambient temperature, PCB copper area, and the datasheet thermal parameters. Because thermal resistance and exact power dissipation were not included in the verified web data, do not substitute generic QFN values; obtain the manufacturer thermal information and perform testing in the final enclosure.
Compliance Information
The verified web data confirms IEEE 802.3-related Ethernet specifications for 10Base-T and 100Base-TX, but it does not provide explicit RoHS, REACH, AEC-Q100, lead-free, halogen-free, or conflict-minerals statements. These fields remain unknown rather than inferred.
