Interface ICs
Subcategories
Products (3,400+)
LAN8742A-CZ - 10/100 Ethernet PHY, RMII, 24-SQFN | Microchip (Tape & Reel)
The Microchip LAN8742A-CZ is a low-power 10BASE-T/100BASE-TX Ethernet PHY transceiver with variable I/O voltage, packaged in a 24-pin SQFN (4x4 mm) and supplied on tape and reel. It supports MII and RMII MAC interfaces, operates from a 1.8V to 3.3V variable I/O supply, and is IEEE 802.3 / 802.3u compliant. The device integrates auto-negotiation, auto-polarity correction, and HP Auto-MDIX, eliminating the need for crossover cables. It is well-suited for consumer, embedded, and industrial Ethernet applications. A PHY (physical layer transceiver) is a key element of any Ethernet link: it sits between the MAC controller and the magnetic transformer/RJ-45, handling line encoding/decoding, link training, and electrical signaling over twisted-pair copper. PHY transceivers are part of the broader category of Ethernet interface ICs, which include MAC controllers, switches, and integrated MAC+PHY SoCs. The LAN8742A specifically implements the 10/100 Mbps copper PHY only; higher-speed Gigabit (1000BASE-T) PHYs use multi-level signaling (PAM) and more pins. Key features of the LAN8742A-CZ include Wake-On-LAN support for system-level sleep modes, cable diagnostics for fault detection, and flexPWR flexible power technology for low-power operation. The variable I/O voltage (1.8V-3.3V) allows direct connection to low-voltage MCUs without level shifters. The HP Auto-MDIX feature automatically detects and compensates for TX/RX pair swaps, allowing either straight-through or crossover cables to be used interchangeably. Architecturally, the LAN8742A employs DSP-based echo and crosstalk cancellation to achieve robust 100BASE-TX performance over Cat5 cable. The on-chip PHY includes an integrated termination network and uses energy detect plus power-down modes to meet modern standby-power requirements. MII and RMII MAC interfaces are selectable via strap pins, allowing the same part to be paired with virtually any MCU or SoC MAC. Typical applications include IoT gateways, industrial Ethernet nodes, embedded web servers, building automation controllers, IP cameras, and consumer electronics requiring a wired network connection. The wide 1.8V-3.3V I/O range and low power consumption also make it attractive for battery-powered Ethernet-enabled devices. When designing with the LAN8742A-CZ, follow the Microchip LAN8742 QFN Routing Checklist for proper PCB layout - the analog ground plane and 50-ohm impedance-controlled differential pairs are critical for radiated emissions and signal integrity compliance. Decoupling capacitors must be placed adjacent to each power pin, and the magnetics must be specified to IEEE 802.3 isolation and return-loss specifications. This page synthesizes distributor pricing, drop-in same-BLAN alternatives, and Microchip application-note design notes not found in the manufacturer datasheet alone - giving engineers a single, decision-ready reference.
LAN8742A-CZ-TR - 10/100 Ethernet PHY, RMII, 24-SQFN | Microchip
The Microchip LAN8742A-CZ-TR is a low-power 10BASE-T/100BASE-TX Ethernet PHY transceiver with variable I/O voltage, packaged in a 24-pin SQFN (4x4 mm) and supplied on tape and reel. It supports MII and RMII MAC interfaces, operates from a 1.8V to 3.3V variable I/O supply, and is IEEE 802.3 / 802.3u compliant. The device integrates auto-negotiation, auto-polarity correction, and HP Auto-MDIX, eliminating the need for crossover cables. It is well-suited for consumer, embedded, and industrial Ethernet applications. A PHY (physical layer transceiver) is a key element of any Ethernet link: it sits between the MAC controller and the magnetic transformer/RJ-45, handling line encoding/decoding, link training, and electrical signaling over twisted-pair copper. PHY transceivers are part of the broader category of Ethernet interface ICs, which include MAC controllers, switches, and integrated MAC+PHY SoCs. The LAN8742A specifically implements the 10/100 Mbps copper PHY only; higher-speed Gigabit (1000BASE-T) PHYs use multi-level signaling (PAM) and more pins. Key features of the LAN8742A-CZ-TR include Wake-On-LAN support for system-level sleep modes, cable diagnostics for fault detection, and flexPWR flexible power technology for low-power operation. The variable I/O voltage (1.8V-3.3V) allows direct connection to low-voltage MCUs without level shifters. The HP Auto-MDIX feature automatically detects and compensates for TX/RX pair swaps, allowing either straight-through or crossover cables to be used interchangeably. Architecturally, the LAN8742A employs DSP-based echo and crosstalk cancellation to achieve robust 100BASE-TX performance over Cat5 cable. The on-chip PHY includes an integrated termination network and uses energy detect plus power-down modes to meet modern standby-power requirements. MII and RMII MAC interfaces are selectable via strap pins, allowing the same part to be paired with virtually any MCU or SoC MAC. Typical applications include IoT gateways, industrial Ethernet nodes, embedded web servers, building automation controllers, IP cameras, and consumer electronics requiring a wired network connection. The wide 1.8V-3.3V I/O range and low power consumption also make it attractive for battery-powered Ethernet-enabled devices. When designing with the LAN8742A-CZ-TR, follow the Microchip LAN8742 QFN Routing Checklist for proper PCB layout - the analog ground plane and 50-ohm impedance-controlled differential pairs are critical for radiated emissions and signal integrity compliance. Decoupling capacitors must be placed adjacent to each power pin, and the magnetics must be specified to IEEE 802.3 isolation and return-loss specifications. This page synthesizes distributor pricing, drop-in same-BLAN alternatives, and Microchip application-note design notes not found in the manufacturer datasheet alone - giving engineers a single, decision-ready reference.
LAN8742AI-CZ - 10/100 Ethernet PHY | Microchip Technology
The Microchip Technology LAN8742AI-CZ is a small-footprint RMII 10/100 Fast Ethernet transceiver with HP Auto-MDIX, cable diagnostics, Wake-on-LAN functionality, and flexPWR technology in a 24-SQFN package. It is designed for consumer, embedded, and industrial Ethernet equipment requiring a compact single-port Ethernet physical layer solution. The device supports 10BASE-T and 100BASE-TX operation, auto-negotiation, auto-polarity correction, and direct or crossover cable connections through HP Auto-MDIX. An Ethernet PHY, also called a physical-layer transceiver, converts digital data into electrical signals for transmission over twisted-pair cabling and converts received signals into data for the host controller. The LAN8742AI-CZ sits between an Ethernet transformer or magnetics and an RMII-compatible embedded host. In the hierarchy of network interfaces, it is a physical-layer IC within the Ethernet transceiver and interface-controller category. The LAN8742AI-CZ offers a 1.8 V to 3.3 V operating range, as identified for this part in the supplier listing. Its integrated low-power features and Wake-on-LAN capability suit systems that need to reduce activity during idle periods. Auto-negotiation automatically establishes the best supported speed and duplex mode, while auto-polarity correction prevents incorrect operation when cable polarity is reversed. HP Auto-MDIX removes the requirement to distinguish straight-through and crossover cables at the connector. The LAN8742AI-CZ is also described as supporting cable diagnostics, which can help embedded equipment identify wiring faults during installation or field maintenance. Its small 4 x 4 mm SQFN package supports compact PCB layouts, but the exposed pad and high-speed interface require careful thermal, grounding, and signal-integrity implementation. Microchip provides a dedicated LAN8742 QFN routing checklist that specifies connecting the exposed digital-ground pad to an internal ground plane with a 2 x 2 grid of four power vias. Typical applications include industrial Ethernet controllers, embedded Linux systems, network appliances, consumer electronics, USB-to-Ethernet equipment, and IoT gateways. The RMII interface is particularly appropriate for microcontrollers and application processors that provide a parallel Ethernet MAC interface. Selection should consider magnetics compatibility, firmware driver support, cable-diagnostic behavior, operating-temperature requirements, and the precise board-level implementation guidance. For reliable operation, follow the manufacturer datasheet for pin assignments, external component values, crystal or clock requirements, and layout clearances. Treat the exposed pad as a thermal and electrical connection rather than an unused lead. Validate the completed board for RMII timing, Ethernet magnetics integration, return-loss performance, radiated emissions, and cable insertion before production. This page combines the manufacturer part information, supplier listings, package details, interface capabilities, drop-in family options, and practical PCB guidance into a focused engineering reference. It also distinguishes confirmed electrical characteristics from parameters that still require the manufacturer datasheet for final design verification.
LAN9115-MT - 10/100 Ethernet Controller, 3.3V | Microchip
The Microchip Technology LAN9115-MT is a single-chip 10/100 Ethernet controller with a nominal 3.3 V supply, clock frequency up to 25 MHz, and a 100-pin TQFP package measuring 14 x 20 mm. It integrates an Ethernet controller and Base-T/TX PHY behind a 16-bit parallel interface for embedded systems requiring medium-performance network connectivity. The device is positioned as a cost-conscious, flexible Ethernet solution that reduces the component count compared with separate controller and physical-layer devices. An Ethernet controller is an interface IC that connects an embedded processor or programmable logic device to a physical Ethernet network. The controller manages higher-level station functions, while the integrated PHY handles the physical signaling required for 10BASE-T and 100BASE-TX links. Within the semiconductor hierarchy, this device is a network interface controller, a communications interface IC, and a system-level Ethernet connectivity component. Verified product information identifies the LAN9115 as a full-featured single-chip 10/100 Ethernet controller intended for 16-bit embedded applications. Its parallel interface supports integration with processors that use a memory-mapped bus rather than a dedicated PCI interface. The supplied distributor classification also identifies a Base-T/TX PHY, while the product description emphasizes price-performance balance for medium-performance requirements. The LAN9115 combines MAC-oriented controller functionality and physical-layer connectivity in one package. This consolidation can simplify PCB routing and reduce the number of external interface components, but the Ethernet magnetics, connector, termination, clock source, decoupling network, and firmware support remain essential parts of a working network subsystem. Its 3.3 V operation also places it in the supply domain of many embedded processors, FPGAs, and industrial controllers. Typical uses include industrial control equipment, embedded gateways, factory data acquisition, instrumentation, building automation, serial-to-Ethernet products, and compact embedded servers. The LAN9115 is most appropriate where 10/100 Ethernet is sufficient and a 16-bit host interface is preferable to a PCI-based architecture. It can also form the network foundation for supervisory systems that exchange configuration, status, and diagnostic data. Board design should reserve careful attention to the 25 MHz clock requirement, 3.3 V power distribution, PHY-to-magnetics routing, and manufacturer-recommended decoupling and layout practices. Because the verified snippets do not provide a complete timing, register, electrical-limit, or absolute-maximum specification set, designers should consult the official manufacturer datasheet before finalizing clock tolerances, impedance, magnetics selection, or software configuration. This page consolidates verified product identity, package, interface, supply, and sourcing information into a practical selection record. It also distinguishes verified facts from unavailable details rather than guessing, while directing engineers to the official datasheet and authorized distributor listings for design validation and current commercial availability.
LAN9116-MT - 10/100 Ethernet Controller | Microchip
Microchip LAN9116-MT is a single-chip 10/100 Ethernet controller with a parallel CPU interface for embedded systems requiring integrated network connectivity, flexible integration, and controlled system cost. It supports 10 Mbps and 100 Mbps Ethernet operation and interfaces with 16-bit or 32-bit embedded processors. The device is supplied in a 100-pin TQFP package measuring 14 x 20 mm. Its combination of an Ethernet controller, 10/100 Base-T/TX physical-layer interface, parallel host interface, and low host-CPU overhead makes it suitable for industrial controllers, embedded gateways, network management equipment, and compact connected products. An Ethernet controller is an interface IC that connects a processor or embedded system to an Ethernet network. In the hardware hierarchy, a network interface controller includes the Ethernet MAC, host-facing bus interface, and physical-layer functions required for copper Ethernet communication. The LAN9116 family combines these functions in one device, reducing the number of external interface components needed when an embedded product requires 10/100 Ethernet rather than only a lower-level transceiver. According to the Microchip LAN9116 datasheet, the controller is intended for embedded applications where performance, flexibility, integration ease, and system cost control are important. Its architecture targets 32-bit applications with medium-to-high performance requirements, while the parallel interface also supports connection to many 16-bit embedded processors. The documented 10/100 Base-T/TX capability allows a system to negotiate 10 Mbps or 100 Mbps operation, while the integrated controller architecture reduces the processing burden imposed on the host CPU. The LAN9116-MT belongs to the LAN9116 product family and is offered as a 100-pin TQFP implementation. Its parallel host interface is intended to connect with embedded processor buses rather than using the serial interfaces associated with many newer Ethernet controllers. This makes it relevant to established embedded processor platforms where a proven parallel bus, compact 14 x 20 mm package, and integrated 10/100 Ethernet function can simplify a board-level design without requiring a separate PHY. Typical applications include industrial Ethernet gateways, programmable controllers, factory automation equipment, embedded routers, print servers, set-top boxes, and network-enabled test equipment. The device is also appropriate for compact industrial control systems in which a 16-bit or 32-bit host processor needs deterministic access to Ethernet packet data. Designers should evaluate host-bus timing, magnetics selection, connector integration, and reference-circuit layout against the complete manufacturer datasheet before releasing production hardware. The primary design consideration is that the LAN9116-MT integrates substantial networking functionality around a parallel host interface. Designers should use the manufacturer reference schematic and placement checklist as the basis for routing the processor interface, supplying the required clock and reset circuitry, and placing magnetics close to the physical-layer section. Input and output constraints, crystal requirements, termination, and decoupling must be verified directly from the manufacturer datasheet rather than inferred from the distributor description. This page consolidates the verified manufacturer description, distributor package information, family comparisons, and practical selection guidance for LAN9116-MT. It also identifies where verified drop-in alternatives are not established, helping engineers distinguish documented family alternatives from unverified claims while reducing design, sourcing, and integration risk.
LAN9117-MD - 10/100 Ethernet Controller | Microchip
The Microchip LAN9117-MD is a high-performance, single-chip 10/100 non-PCI Ethernet controller designed for embedded systems, with a 16-bit CPU interface and integrated Ethernet controller functionality. The verified product information identifies it as a member of the LAN9118 family and emphasizes efficient interfacing with most 16-bit embedded CPUs, low CPU overhead, and suitability for medium- to high-performance applications. It is packaged as an Ethernet interface controller from the LAN9117 family; the exact package designation, pin count, voltage ratings, and full electrical limits require confirmation from the manufacturer datasheet. What is an Ethernet controller? An Ethernet controller is an integrated circuit that manages the hardware and protocol functions required for a host system to communicate over an Ethernet network. In the LAN9117-MD, the 10/100 designation refers to support for 10 Mb/s and 100 Mb/s Ethernet operation, while the non-PCI description identifies its host-side integration approach. The device is intended to reduce CPU involvement in network traffic and simplify embedded Ethernet connectivity. The most important verified feature is the 16-bit host-interface orientation. The product data states that the LAN9117 efficiently interfaces with most 16-bit embedded CPUs and uses a low-CPU-overhead architecture. It also belongs to the LAN9118 family, which provides useful context for firmware and hardware design work involving related SMSC Ethernet controllers. The product is marketed for embedded applications where performance, flexibility, ease of integration, and system-cost control are priorities. LAN9117-MD is suitable for industrial control, embedded instrumentation, network-connected test equipment, and compact embedded platforms that need 10/100 Ethernet without a PCI bus. Compared with a software-heavy network interface, a dedicated Ethernet controller can offload protocol and hardware tasks, reducing the burden placed on the host processor. The actual throughput, media interface, clock requirements, supply voltage, and electrical timing must be checked against the official datasheet before schematic capture. A key design consideration is confirming the exact package footprint and pin compatibility before substituting any part. The available migration guidance explicitly states that the LAN9211 is not a drop-in replacement for the LAN9117 because it uses a different package and requires a new PCB. This distinction is important when comparing Ethernet controllers by function rather than by mechanical interchangeability. This product page consolidates the verified LAN9117-MD role, family information, 10/100 Ethernet capability, 16-bit embedded-CPU interface, sourcing references, and migration cautions into a practical component-selection resource. Numeric electrical limits, pricing, pinout assignments, lifecycle details, and validated drop-in alternatives remain dependent on manufacturer or distributor data.
LAN9117-MT 10/100 Ethernet Controller | Microchip
The Microchip Technology LAN9117-MT is a single-chip 10/100 Ethernet controller with an integrated Base-T/TX PHY, parallel host interface, and 100-pin TQFP package. The verified distributor listing identifies support for 10/100 Base-T/TX networking and a parallel interface. It is designed for embedded systems requiring wired Ethernet without a separate external Ethernet transceiver. An Ethernet controller is an interface IC that connects an embedded processor or programmable controller to a physical Ethernet network. Within the broader semiconductor hierarchy, the LAN9117-MT belongs to the Ethernet controller family, network interface controllers, interface ICs, and communications semiconductors. By combining controller and physical-layer functions, it can reduce component count while preserving a parallel processor-facing integration path. The verified product information identifies 10 Mbps and 100 Mbps operation, a 3.3 V supply requirement, a 100-pin TQFP package, and a single-chip architecture. The -MT ordering suffix is associated with a tray package in the available distributor record. Other detailed electrical limits, host-interface timing, register features, media-type behavior, and environmental ratings were not included in the supplied verified excerpts and therefore are not asserted here. Typical uses include embedded industrial controllers, data-acquisition systems, building-automation equipment, access-control terminals, test instruments, and compact embedded servers. A parallel host interface can suit processors and controllers that do not include an integrated Ethernet MAC, while the integrated PHY simplifies the connection between the digital host bus and the analog magnetics interface. The primary design consideration is footprint verification: the DigiKey listing describes a 100-TQFP package measuring 14 mm by 14 mm, while another distributor excerpt states 14 mm by 20 mm. Engineers must confirm the exact ordering-code drawing and land pattern against the authoritative manufacturer package documentation before layout release. The -MT suffix and tray packaging must also be confirmed with the current manufacturer datasheet. This page combines verified manufacturer and distributor descriptions with explicit engineering caveats. It does not infer unavailable electrical, timing, thermal, or compliance values, and it separates confirmed product identity from details that still require datasheet-level verification.
LAN9118-MT 10/100 Ethernet Controller | Microchip
The Microchip Technology LAN9118-MT is a single-chip 10/100 Base-T/TX Ethernet controller with a 32-bit external parallel interface, a 3.3 V supply, and a 100-pin TQFP package. It combines an Ethernet controller and PHY for embedded systems requiring local network connectivity without a separate PCI bus controller. The device supports 10 Mbps and 100 Mbps Ethernet operation and is identified by the commercial temperature-grade -MT ordering suffix. An Ethernet controller is an interface integrated circuit that connects an embedded processor or microcontroller to a physical Ethernet network. The LAN9118 family belongs to the broader hierarchy of Ethernet controller -> network interface controller -> interface IC -> semiconductor. Integrating the controller and PHY supports embedded product designs for industrial controls, communications equipment, data acquisition, and networked peripherals, while the parallel host interface gives the host processor direct register and data access. The verified product information identifies a 32-bit external data bus, a 7-bit address bus, a 25 MHz clock capability, a 3.3 V supply, and a 100-pin TQFP package. The 100-pin package exposes the substantial parallel host interface required by the non-PCI architecture. The LAN9118-MT is therefore most appropriate where an embedded system has enough I/O and board area for a high-pin-count parallel interface rather than a compact serial Ethernet controller. The part is described as a high-performance single-chip 10/100 non-PCI Ethernet controller. Its combined controller and PHY architecture can reduce the number of external network-interface components compared with a separated MAC and physical-layer design. Ethernet magnetics and the RJ45 connector remain external, and the final signal-integrity and layout implementation must follow the manufacturer hardware guidance. The provided verification also identifies IEEE 802.3 and IEEE 802.3u compliance in a product comparison source. Typical uses include embedded Ethernet gateways, industrial monitoring equipment, serial-to-Ethernet systems, test instruments, and control systems that require 10/100 connectivity. The parallel interface makes the LAN9118-MT most attractive to designs with a processor bus capable of supporting the required data width and pin count. It is less suitable for highly constrained systems that favor a serial Ethernet interface or a smaller package. Designers should verify the complete pinout, voltage tolerances, clock requirements, decoupling, reset behavior, magnetics selection, and PCB routing against the manufacturer datasheet before layout release. The verified search results identify the manufacturer LAN9118 product page and multiple datasheet mirrors, but do not provide every electrical timing, pin-level, or lifecycle value needed for a complete production design.
LAN91C110-PU - 10/100 Ethernet Controller | Microchip
The Microchip LAN91C110-PU is a 10/100 Base-TX Fast Ethernet controller with a generic 16/32-bit host interface, packaged in a 144-pin TQFP measuring 20 mm by 20 mm. It is designed for second-generation Fast Ethernet PC Card adapters and other non-PCI connectivity products. The controller implements the Media Access Control portion of the Ethernet protocol, placing Ethernet framing and medium-access functions in a dedicated interface IC. An Ethernet controller is a semiconductor that manages frame transmission and reception between a host processor and a network medium. The LAN91C110-PU provides a hardware interface suitable for systems whose CPU or system bus is not based on PCI. By using a generic parallel host interface, it can be connected to compatible processors and bus bridges without requiring a PCI-specific interface architecture. The principal feature set includes support for 10/100 Base-T/TX networking, a selectable 16-bit or 32-bit host interface, and an integrated Ethernet MAC function. The parallel interface provides a practical connection point for embedded systems, industrial controllers, legacy computer systems, and custom communications equipment. Its 144-pin TQFP package supports the numerous digital host, clock, reset, media, and power connections required by the controller and its external physical-layer interface. The LAN91C110-PU separates network-medium handling from the host-side system bus. The MAC processes Ethernet frame activity while the generic 16/32-bit interface transfers control and data information to the host processor. This division of responsibilities is particularly useful when a system already has an established embedded bus architecture but requires standards-based 10/100 Ethernet connectivity rather than a PCI peripheral arrangement. Typical applications include Fast Ethernet PC Card adapters, embedded control systems, industrial data-acquisition equipment, legacy network upgrades, and custom host-bus designs. It can also suit embedded Linux platforms and other processor-based equipment requiring a parallel Ethernet connection. System-level clocking, physical-layer connectivity, magnetic-interface components, and host-bus timing remain part of the complete design rather than functions implied solely by the controller IC. Designers should review the manufacturer datasheet before assigning signals because the complete 144-pin assignment, operating limits, interface timing, clock requirements, and recommended external networks must be followed exactly. PCB layout should preserve the required short paths, appropriate grounding, and controlled clock and data-routing geometry. Host firmware must also initialize the controller and configure its medium-access and host-interface operation according to the manufacturer procedure. This page organizes the confirmed device identity, package information, host-interface capabilities, use cases, sourcing path, and design considerations into an engineering-focused reference. It also distinguishes the controller's documented role from the additional PHY, magnetics, firmware, and bus-interface engineering required to build a complete Ethernet-connected product.
LAN91C111-NS - 10/100 Ethernet MAC+PHY | Microchip
Microchip Technology LAN91C111-NS is a mixed-signal 10/100 Mb/s Ethernet controller integrating a Media Access Controller and Physical Layer in a 128-pin QFP package. It implements the MAC and PHY portions of the CSMA/CD protocol, supports 10 Mbps and 100 Mbps operation, and provides a parallel host interface selectable as 32-bit, 16-bit, or 8-bit. An Ethernet MAC and PHY controller is an integrated network interface for embedded equipment. The MAC manages frame handling and the CSMA/CD protocol, while the PHY connects the digital controller to a 10/100 Base-T Ethernet physical layer. Combining both functions reduces system complexity, conserves board area, and allows an embedded processor to communicate through a parallel host bus rather than requiring a separate Ethernet PHY. The LAN91C111-NS supports dual-speed operation at 100 Mbps or 10 Mbps with AutoNegotiation, as described in the manufacturer application note. Its architecture includes 8 KB of dynamically configurable transmit and receive FIFO SRAM, helping decouple host-bus traffic from network-frame activity. The parallel interface can operate at 32, 16, or 8 bits, providing flexibility for embedded processors with different external-bus capabilities. For 100BASE-TX operation, the descrambler processes the scrambled data recovered from the medium, follows the IEEE 802.3 scrambling rules, aligns the data on correct 5B word boundaries, and passes it to the 4B5B decoder. This mixed-signal architecture supports both 10BASE-T and 100BASE-TX networking while maintaining a host-facing digital interface. The manufacturer identifies the device as suitable for third-generation embedded Fast Ethernet connectivity solutions. Typical uses include industrial automation controllers, embedded network gateways, factory data-acquisition equipment, building-control systems, print servers, and compact network-access appliances. The selectable host-bus width is especially useful when balancing throughput, PCB routing, and processor-bus compatibility. AutoNegotiation allows the controller to operate with 10 Mb/s or 100 Mb/s network links while reducing manual speed configuration. Design the power, ground, clock, magnetics, and network-line interface according to the manufacturer reference implementation. Preserve the recommended placement and decoupling of the Ethernet magnetic components and provide the specified oscillator and crystal arrangement to avoid timing or compliance problems. Validate the completed board for conducted emissions, immunity, and Ethernet link performance before production. This page organizes the controller's principal network functions, interface options, package characteristics, application guidance, and qualified same-footprint alternatives. It also highlights design considerations that help engineers distinguish protocol coverage, host-bus flexibility, FIFO behavior, and physical-layer implementation without treating the device as a generic Ethernet block.
LAN91C111-NU - 10/100 Ethernet MAC/PHY | Microchip
The Microchip LAN91C111-NU is a single-chip 10/100 Base-T Ethernet controller integrating a Media Access Control layer and Physical Layer in a 128-lead TQFP package. It supports 10 Mbps and 100 Mbps operation, provides an 8/16/32-bit parallel host interface, and includes an 8 KB dynamically configurable transmit and receive FIFO. The device combines digital host-facing logic with analog PHY functions for embedded Ethernet connectivity. An Ethernet MAC and PHY are the two principal layers required for a conventional 10/100 Ethernet connection. The MAC organizes frames and manages access to the network, while the PHY converts digital data into signals suitable for twisted-pair cabling. Integrating both functions into one controller reduces external component count and simplifies embedded network designs compared with separate MAC and PHY implementations. The LAN91C111-NU belongs to the broader interface IC and Ethernet controller hierarchy. Key features include 10/100 Mbps dual-speed operation, support for 8-bit, 16-bit, and 32-bit host bus configurations, and 8 KB of internal FIFO memory. The manufacturer describes the LAN91C111 as implementing the MAC and PHY portions of CSMA/CD and using a parallel host interface suited to embedded processors. Its mixed-signal construction places network termination and transceiver functions alongside the digital controller logic. The configurable host interface allows a design to balance throughput, wiring, and memory efficiency. An 8-bit bus can reduce the number of processor connections, while a 32-bit bus can transfer data more efficiently when the host bus and system timing support it. The internal transmit and receive FIFOs help decouple host access from network timing, although firmware, interrupt handling, and buffer configuration remain essential parts of a reliable driver design. Typical applications include embedded industrial controllers, print servers, set-top boxes, embedded Linux systems, instrument-control equipment, and compact network appliances. The integrated 10/100 Ethernet interface is useful when a system needs a deterministic parallel host connection rather than a serial network interface. It can also support legacy Fast Ethernet equipment where both 10 Mbps and 100 Mbps operation are required. Layout is the primary design consideration. Place the Ethernet magnetics, line-side protection, and PHY-related components close to the network connector, while keeping the parallel host bus away from sensitive analog network traces. Confirm power, clock, reset, transceiver, and host-interface requirements against the manufacturer datasheet before releasing the PCB layout. The package library does not contain a dedicated 128-lead TQFP drawing, so use the manufacturer pin-description table for assignments. This page combines the LAN91C111-NU device function, verified family variants, cross-reference findings, application guidance, and practical integration considerations. It also distinguishes true same-package options from unrelated Ethernet controllers that may require different hosts, PHYs, packages, or driver changes.
LAN91C113-NC 10/100 Ethernet MAC/PHY | Microchip Technology
The Microchip Technology LAN91C113-NC is a 16-bit 10/100 Base-T Ethernet single-chip MAC and PHY controller. It combines media-access control, physical-layer signaling, and a parallel host interface in one integrated circuit, reducing the component count required for embedded Ethernet connectivity. The controller is associated with the SMSC FEAST family and is identified in the manufacturer catalog as LAN91C113. An Ethernet MAC and PHY single-chip controller is an interface IC that connects an embedded host processor to a copper Ethernet network. The MAC handles Ethernet frame processing and host-facing data exchange, while the PHY converts between digital signaling and the physical signals used on 10/100 Base-T networks. In the broader semiconductor hierarchy, the device belongs to Ethernet controllers, interface controllers, integrated circuits, and networked embedded systems. The principal feature of the LAN91C113-NC is its combination of a 16-bit parallel host interface with an integrated 10/100 Ethernet MAC and PHY. This integration can simplify embedded networking designs that previously required separate Ethernet controller and physical-layer devices. The 16-bit interface provides a direct path between the controller and a compatible host processor, while on-chip Ethernet physical-layer functionality supports connection to a network transformer and magnetics. The LAN91C113 family is associated with SMSC's FEAST Fast Ethernet controller technology. Its architecture is intended to provide Ethernet connectivity in embedded systems where a non-PCI parallel interface is preferable to a PCI-based controller. The combined MAC and PHY arrangement also reduces board-level integration complexity by consolidating the digital controller and physical-layer transceiver into one package. Typical uses for this controller include industrial embedded platforms, data acquisition equipment, communications modules, embedded test systems, and legacy controller-based products being connected to 10/100 Ethernet. It is particularly relevant when the host processor already provides a 16-bit parallel bus and the design needs a dedicated Ethernet interface rather than an integrated network controller in the processor itself. Design work should begin with the manufacturer pin-description and reference-circuit sections, including the external clock, reset, magnetics, decoupling, and network-isolation requirements. PCB signal integrity is particularly important because the device combines parallel host signaling with Ethernet physical circuitry. Maintain the specified component placement and controlled impedance around the Ethernet network path, and use the manufacturer reference design as the basis for a first revision. This product page combines the device identity, catalog description, distributor records, package guidance, application analysis, and engineering design notes into one purchasing resource. It also distinguishes direct ordering information from replacement analysis so engineers can assess fit, interface compatibility, and board-level integration before committing a design.
LAN91C113-NS - 100Mbps Ethernet Controller | Microchip
Microchip Technology LAN91C113-NS is a 100 Mbps Ethernet controller with integrated 10/100 Base-T/TX PHY and a parallel MII interface, supplied in a 128-QFP package. The device supports a 2.97 V minimum supply voltage, operates at 3.3 V, and is specified for a 0°C to 85°C temperature range. Its integrated MAC and PHY combine Ethernet packet processing and physical-layer connectivity in one IC. An Ethernet controller is an interface integrated circuit that connects a digital processor or system bus to an Ethernet network. The LAN91C113 belongs to the Ethernet interface controller category, which combines a media access controller, physical-layer transceiver, and host-facing parallel interface. This integration can reduce the number of external network components while providing a standardized 10/100 Ethernet connection for embedded equipment. The principal operating characteristics are a 100 Mbps data rate, compliance with IEEE 802.3 and IEEE 802.3u, MII host connectivity, and a 3.3 V supply. The listed supply current is 100 mA, while the operating temperature extends from 0°C to 85°C. These specifications position the device for industrial, communications, and embedded systems that use a parallel host interface instead of a serial media interface. The 128-QFP package provides the physical footprint and pin count needed for a substantial mixed-signal Ethernet interface. Because the MAC and PHY are integrated, PCB design requires careful separation of Ethernet signal routing, supply distribution, and grounding. The parallel MII interface should be routed according to the manufacturer's recommended layout and timing guidance to limit data-integrity and electromagnetic-interference issues. Typical uses include industrial Ethernet control equipment, embedded network gateways, data acquisition systems, print servers, and communication controllers. In each case, the device serves as the link between a host processor and a 10/100 Ethernet network. Its 3.3 V operation and commercial temperature range support compact systems where 100 Mbps connectivity is sufficient and a dedicated PHY is undesirable. Designers should confirm pin functions, timing, clocking, magnetics, and decoupling directly against the manufacturer datasheet before layout release. Particular attention should be given to MII clock timing, PHY termination, analog supply routing, and the separation between Ethernet traces and sensitive digital signals. These controls are more important than raw headline speed when establishing reliable network performance. This page organizes the LAN91C113-NS specifications, sourcing information, interface context, application guidance, and same-package replacement considerations. It also identifies which technical details require confirmation from the manufacturer documentation before a new PCB is released.
LAN91C113-NU - 10/100 Ethernet MAC/PHY | Microchip
The Microchip Technology LAN91C113-NU is a 16-bit 10/100 Base-T/TX Ethernet controller that combines a non-PCI Media Independent Interface MAC and integrated PHY in a 128-pin TQFP package measuring 14 x 14 mm. It operates from a 3.3 V supply and connects a host processor through the parallel MII interface. An Ethernet MAC, or Media Access Control, manages frame transmission, reception, addressing, and access to the physical network medium. A PHY implements the physical signaling layer between the MAC and a twisted-pair cable. The LAN91C113 integrates both functions into one controller, reducing board area and external PHY count compared with a separate MAC and Ethernet transceiver design. The controller supports 10Base-T and 100Base-TX operation over a 16-bit parallel MII. This combination suits embedded systems that already have a host processor with a compatible parallel bus but do not include an Ethernet PHY. Integration can reduce board routing, connector requirements, and the number of components requiring firmware and driver support. The LAN91C113-NU belongs to the Ethernet interface IC and network interface controller hierarchy. Unlike a PCI-based Ethernet card, the parallel MII architecture connects directly to processor logic rather than a host peripheral bus. The 3.3 V operating supply is compatible with modern embedded processor systems, although the complete design must also satisfy the voltage requirements of attached memory, magnetics, and physical-layer circuitry. Typical applications include industrial monitoring equipment, building automation controllers, embedded test equipment, industrial gateways, and compact network appliances. A typical implementation places the controller and an Ethernet jack with integrated magnetics on the same PCB, connects the host processor to the MII signals, and configures the MAC and PHY through the device’s control interface. Design should begin with the manufacturer’s reference schematic and signal-integrity guidance. Route the parallel MII clock and data signals as a controlled-length group, provide the required decoupling, and follow the recommended magnetics and impedance-termination layout. Confirm that the host processor’s MII timing, voltage levels, interrupt requirements, and software driver support match the controller before committing the PCB layout. This page consolidates the product identity, package information, application guidance, comparison criteria, and practical integration considerations engineers need when evaluating the LAN91C113-NU for a 10/100 Ethernet design. Use the Request a Quote form on this page for current commercial availability, packaging, lead time, and sourcing support.
LAN91C93I-MS - 10Mbps Ethernet Controller | Microchip
The Microchip Technology LAN91C93I-MS is a single-chip, non-PCI Ethernet controller with a 10 Mbps IEEE 802.3 10BASE-T PHY interface, supplied in a 100-pin QFP package measuring 14 x 20 mm. It combines an Ethernet media-access controller with a local-bus interface and is designed for embedded systems that require compact, software-compatible Ethernet connectivity. The controller operates from 3.3 V or 5 V supply rails and is available in tray packaging as LAN91C93I-MS. An Ethernet controller is an interface IC that manages frame transmission and reception between a host processor and an Ethernet physical layer. In this product hierarchy, the LAN91C93I integrates an IEEE 802.3 Ethernet MAC, a 10BASE-T PHY interface, and a local-bus host interface. This integration reduces external component count compared with a design using a separate network controller and physical-layer transceiver, while preserving a conventional processor-facing software interface. Key features include a 10 Mbps data rate, support for full-duplex switched Ethernet, and independent transmit and receive operations. The LAN91C93I architecture incorporates the local-bus functionality associated with the LAN91C92 family. The manufacturer datasheet also states that the controller is 100% software compatible with the LAN91C92, LAN91C94, and LAN91C96 in local-bus mode, which can simplify firmware migration among supported controller generations. The controller uses a local-bus architecture rather than a PCI interface, making it appropriate for embedded processors and custom bus designs that do not expose PCI host connectivity. Its integrated 10BASE-T PHY interface connects the digital Ethernet controller to a compliant network physical layer. Support for full-duplex switched Ethernet permits simultaneous sending and receiving, unlike designs restricted to half-duplex shared-network operation. Typical uses include industrial monitoring equipment, embedded test systems, legacy factory controls, serial-to-Ethernet equipment, and compact data-acquisition platforms. In these systems, the local-bus interface connects the Ethernet controller to a host processor, while the 10BASE-T PHY interface connects the board to copper Ethernet. Designers should confirm the required host-bus timing, transceiver characteristics, and electrical isolation before integrating the controller into a new design. The principal design consideration is interface compatibility. LAN91C93I is intended to maintain software compatibility with selected LAN91C92, LAN91C94, and LAN91C96 devices in local-bus mode, but software compatibility alone does not guarantee unconditional PCB interchangeability. Confirm package dimensions, pin assignments, supply sequencing, clock requirements, and transceiver characteristics in the manufacturer datasheet before releasing a replacement or respin. This page organizes the controller’s key electrical, packaging, compatibility, application, and design information into an engineering-focused reference. It also distinguishes verified drop-in candidates from broader software-compatible family members, helping procurement and design teams assess replacements with the appropriate technical checks.
LAN91C93I-MU - 10 Mbps Ethernet Controller | Microchip | TQFP-100
The Microchip Technology LAN91C93I-MU is a non-PCI, single-chip 10 Mbps Ethernet controller supporting IEEE 802.3 and a 10BASE-T PHY interface in a 100-pin TQFP package measuring 14 x 14 mm. It operates from a 3.3 V supply, with some catalog listings identifying compatibility with 3.3 V and 5 V systems. The controller provides integrated local-bus networking, full-duplex switched Ethernet operation, independent transmit and receive paths, and an enhanced transmit queue for efficient packet management. Its 100-TQFP footprint supports conventional surface-mount PCB assembly rather than a legacy PC/PCI bus interface. The LAN91C93I architecture combines local-area-network controller functionality with a simple software interface and retains compatibility with the LAN91C92, LAN91C94, and LAN91C96 in local-bus mode. These characteristics make the device suitable for embedded Ethernet equipment that requires deterministic network connectivity without requiring a PCI host interface. The LAN91C93I-MU is identified by Microchip as LAN91C93I with the -MU ordering suffix and is supplied in a green 100-pin QFP package. Designed for industrial-temperature operation, the device is specified from -40°C to +85°C. A typical design uses the controller with external magnetic isolation for the Ethernet physical layer, a 3.3 V supply, a local host processor connected through the device's parallel host bus, and an RJ45 network interface. The controller supports 10BASE-T rather than 100BASE-TX, so link speed and physical-layer requirements must be matched to legacy or cost-sensitive Ethernet equipment. Because the LAN91C93I is not a PCI Ethernet peripheral, host-bus timing, address mapping, interrupt connectivity, and software driver configuration are central PCB considerations. Its integrated architecture reduces the number of external networking components while preserving a conventional microcontroller or processor interface. An Ethernet controller is an interface integrated circuit that manages frame transmission, reception, buffering, addressing, and host communication for an Ethernet network. The LAN91C93I belongs to the local-bus controller hierarchy, combining an Ethernet MAC, protocol handling, and PHY-interface logic into one device. Its IEEE 802.3 and 10BASE-T support connect it to the Ethernet physical-layer ecosystem, while full-duplex switched Ethernet capability allows transmit and receive traffic to proceed independently. This integration places the LAN91C93I between a host processor and an Ethernet transceiver, simplifying the hardware architecture compared with a solution using a discrete network controller and additional interface glue. Key device characteristics include 10 Mbps Ethernet operation, a 10BASE-T PHY interface, full-duplex switched Ethernet support, independent transmit and receive operations, and an enhanced transmit queue. The controller's local-bus mode software compatibility with the LAN91C92, LAN91C94, and LAN91C96 can simplify firmware migration when an existing product family already uses those controllers. Its non-PCI architecture also provides an important alternative for embedded systems whose processors do not expose a conventional PCI bus. The 100-TQFP package provides enough pins for the parallel host interface, control signals, memory connections, and Ethernet-related signals, but it also requires careful escape routing and multilayer-board planning. The specified -40°C to +85°C operating range suits industrial equipment where commercial-temperature components would be insufficient. Technically, the LAN91C93I combines local-area-network controller functions with an enhanced transmit queue and fully independent receive and transmit operations. The enhanced queue allows the software driver to stage packets more effectively, which is valuable in systems where network traffic must be transferred between an external processor and the Ethernet medium without blocking host execution. The PHY interface follows 10BASE-T requirements rather than 100BASE-TX, determining the external magnetics, connector, line-driver, and cable requirements of the board. Local-bus software compatibility with four related controller families reduces the amount of low-level networking code that must be rewritten, although drivers should still be checked for register, interrupt, and device-option differences. The device is manufactured in CMOS technology and is specified as a green package, supporting lead-free assembly processes where its production documentation confirms the appropriate soldering profile. Typical applications include industrial control terminals, embedded instrumentation, legacy network gateways, factory-floor controllers, and compact embedded networking modules. In each case, the controller provides a conventional Ethernet interface to a host processor while managing frames, transmit queuing, and receive activity in hardware. A 10BASE-T-only design is appropriate for legacy infrastructure, isolated point-to-point links, or equipment where 10 Mbps is sufficient and component cost matters. It may also serve as a migration interface when an established product already contains LAN91C92-, LAN91C94-, or LAN91C96-compatible software. Modern high-bandwidth gateways generally require a faster Ethernet controller, but the LAN91C93I remains useful where software continuity and local-bus integration outweigh throughput. The primary PCB design consideration is the parallel host-bus and memory-interface routing required by a 100-pin TQFP. Place decoupling capacitors close to each applicable supply pin, maintain short high-speed Ethernet paths between the controller, external PHY components, magnetics, and RJ45 connector, and provide solid ground-plane continuity under the device. Keep analog and digital return currents separated where the board stackup permits, and follow the manufacturer's recommended pinout and reference circuitry. Verify the external network interface against the 10BASE-T design requirements rather than assuming that a 100BASE-T magnetics assembly is interchangeable. This page combines manufacturer and distributor product facts with package, application, purchasing, and replacement guidance to support early design decisions. It distinguishes verified electrical and package characteristics from parameters that require confirmation in the complete manufacturer datasheet, helping engineers qualify the LAN91C93I-MU for embedded Ethernet designs before committing to a PCB layout or production release.
LAN91C96-MS - 10/100 Ethernet Controller | Microchip
The Microchip Technology LAN91C96-MS is a single-chip 10/100 Ethernet controller with a 3.3 V supply, a 100-pin QFP package measuring 14 x 20 mm, and an operating temperature range of -40 °C to 85 °C. It integrates an Ethernet MAC, physical-layer encoding and decoding functions, packet RAM, and host-bus connectivity, reducing the component count required for embedded Ethernet designs. An Ethernet controller is an interface IC that connects an embedded host processor to a physical Ethernet network. Within the product hierarchy, the LAN91C96-MS is an Ethernet MAC and physical-layer controller, which is part of a communications interface IC and ultimately a semiconductor. It supports non-PCI systems using Local Bus, PCMCIA, or Motorola 68000 bus interfaces instead of requiring a PCI-compatible host. Key features include full-duplex switched Ethernet support, enhanced transmit queue management, integrated packet RAM, and support for AUI and twisted-pair network connections. The supplied manufacturer information identifies the LAN91C96 family as integrating most IEEE 802.3 functionality, including MAC protocol handling, physical-layer encoding and decoding, twisted-pair transceiver functions, and link-integrity testing. The controller addresses legacy embedded platforms that need Ethernet connectivity without a PCI bus. Its local-bus addressing uses A0-A9 and A15 together with active-low nREG, nCE1, nWE, and nOE signals. Word reads from odd byte addresses can return a zero value in the upper byte because that byte is a don't-care under the referenced PCMCIA attribute-memory access rule. Typical uses include legacy embedded systems, industrial controllers, compact network adapters, PC Card LAN equipment, and custom communication equipment requiring a non-PCI Ethernet interface. The manufacturer also identifies the low-profile TQFP option as suitable for mobile applications such as PC Card LAN adapters, although the verified LAN91C96-MS ordering information identifies a 100-pin QFP package. Designers should verify the exact PCB footprint, clock source, bus timing, transceiver connections, and power requirements against the manufacturer datasheet before substituting this legacy controller. The -40 °C to 85 °C specification supports industrial-temperature designs, but applications needing a wider commercial range should select a variant with the appropriate documented rating. This page consolidates verified distributor identification, manufacturer product information, datasheet details, interface features, and package data. It also separates documented facts from unresolved parameters and avoids presenting unspecified pricing, pin names, and competitor compatibility as confirmed engineering data.
LAN91C96-MU - 10Mbps Ethernet Controller | Microchip Technology
Microchip Technology LAN91C96-MU is a single-chip 10Mbps Ethernet controller with a 10BASE-T PHY, parallel host interface, MAC functions, and integrated packet RAM in a 100-pin TQFP package measuring 14 x 14 mm. The device supports 3.3 V and 5 V operation and combines Local Bus, PCMCIA, and Motorola 68000 bus interfaces in one CMOS Ethernet controller. Its integrated architecture reduces the external component count required for embedded Ethernet connectivity while providing full-duplex switched Ethernet support, enhanced transmit queue management, and 6 kB of packet RAM. An Ethernet controller is an interface IC that connects a host processor or embedded system to an Ethernet physical network. The LAN91C96 family integrates the Media Access Control layer, physical-layer interface, packet buffer, and host-bus logic. This places it in the hierarchy Ethernet controller > network interface controller > interface IC > semiconductor, making it suitable for legacy industrial, embedded, and PCMCIA equipment that cannot rely on a modern PCI Ethernet controller. The LAN91C96-MU supports 10Mbps Ethernet operation and a parallel 10BASE-T PHY interface. According to Microchip product information, the controller integrates all MAC and physical-layer functions and the packet RAM required to implement a complete Ethernet node. The datasheet also identifies support for full-duplex switched Ethernet and enhanced transmit queue management. These features are useful where the host bus architecture, rather than network throughput, is the primary system constraint. The device uses a 100-TQFP surface-mount package and supports both 3.3 V and 5 V supply conditions, allowing integration with systems using either voltage domain. Its Local Bus, PCMCIA, and Motorola 68000 interfaces provide design flexibility across embedded processor and legacy computer platforms. The manufacturer datasheet states that the LAN91C96 is pin and software compatible with the LAN91C92 and LAN91C94 in Local Bus mode, which supports incremental upgrades of qualifying legacy designs. Typical applications include embedded industrial controllers, PCMCIA Ethernet adapters, legacy Local Bus systems, Motorola 68000-based equipment, and custom network interface cards. The integrated 6 kB packet RAM can reduce host-memory traffic and buffer network packets, while full-duplex operation supports switched-network installations. Designers should verify that the host timing, transceiver connection, connector magnetics, and software driver are supported by the target system architecture. The primary design consideration is voltage and signal compatibility with the existing bus. Because the controller integrates Ethernet functions but requires an appropriate external network interface implementation, designers must follow the manufacturer reference circuitry for magnetics, termination, clocking, and decoupling. Firmware and bus-driver compatibility are equally important; an identical package does not by itself guarantee that a replacement can operate correctly in every legacy operating environment. This product data combines manufacturer documentation, distributor package information, sourcing details, and verified same-family alternatives. It also adds practical guidance for comparing the LAN91C96-MU with other LAN91C96 package and temperature designations without presenting package-only changes as separate functional technologies.
LAN91C96I-MS - 10Mbps Full-Duplex Ethernet Controller | Microchip
The Microchip Technology LAN91C96I-MS is a non-PCI single-chip Ethernet controller with a 10 Mbps 10BASE-T PHY, parallel host interface, integrated packet RAM, and 100-pin QFP package. It supports full-duplex switched Ethernet, independent transmit and receive operations, Magic Packet wake-up, optical-fiber support, programmable LED indication, and a low-power mode. The device operates from 3.3 V and is specified for industrial temperatures from -40°C to +85°C. An Ethernet controller is a network interface semiconductor that connects an embedded host bus to physical-layer hardware. This device integrates MAC functions, the 10BASE-T physical layer, and packet RAM on one VLSI chip. It combines Local Bus, PCMCIA, and Motorola 68000 bus interfaces, allowing it to serve legacy embedded systems, embedded controllers, industrial equipment, and network-interface subsystems without requiring a separate Ethernet PHY. The LAN91C96I-MS supports full-duplex switched Ethernet at 10 Mbps and provides independent transmit and receive operations. Its enhanced transmit queue helps the host organize frames for serial transmission, while packet RAM reduces the amount of external buffering required. Additional network functions include Magic Packet, programmable LED indication, support for optical-fiber links, and a low-power operating mode for power-sensitive embedded designs. The parallel interface connects the controller to a host processor through a structured register and buffer architecture. Local Bus compatibility is important because the Microchip LAN91C96i family is designed to be 100% pin and software compatible with the LAN91C92 and LAN91C94 when operating in Local Bus mode. This compatibility can simplify firmware maintenance when moving between qualified LAN91C-family controller designs without changing the established host-side software model. Typical uses include embedded data acquisition, legacy industrial controllers, print systems, point-of-sale terminals, embedded gateways, and equipment requiring a 10BASE-T network node. The integrated PHY simplifies the board-level network section, while the parallel host interface suits processors that do not include a dedicated Ethernet media-access controller. The 100-pin QFP package also provides ample signal access for host-bus, memory, clock, interrupt, and network connectivity. Designers should account for all power, ground, clock, reset, interrupt, transmit, and receive connections in the manufacturer pin-description table. PCB placement should keep the 10BASE-T network section away from high-speed or high-current switching circuitry, while providing a low-impedance return path for the interface and supply pins. Software configuration should use the documented register definitions and account for the controller's independent transmit and receive operation. This product page combines the manufacturer architecture description, distributor package information, compatibility information, and practical selection guidance. It also identifies same-package family alternatives and explains where package, temperature, or ordering-option differences require engineering review before a replacement is approved.
LAN9210-ABZJ - 10/100 Ethernet Controller | Microchip Technology
The Microchip Technology LAN9210-ABZJ is a single-chip 10/100 Ethernet controller with an integrated MAC and PHY, a parallel host interface, and a 56-QFN 8 x 8 mm package. It supports IEEE 802.3 10BASE-T and IEEE 802.3u 100BASE-TX, HP Auto-MDIX, a 16-bit external data bus, a 7-bit address bus, and data rates up to 12.5 Mbps. An Ethernet controller is a semiconductor that connects an embedded processor or microcontroller to a physical Ethernet network. It combines packet processing, host-bus access, and physical-layer signaling into one device, reducing the number of discrete components required for an embedded Ethernet port. Within the product hierarchy, the LAN9210 is a 10/100 Ethernet controller, an Ethernet interface IC, and a network-connected embedded interface device. The controller includes large transmit and receive FIFOs for applications experiencing network latency or burst traffic. Its SRAM-like slave interface provides a direct connection to common 16-bit microprocessors and microcontrollers, as well as 32-bit processors that expose a 16-bit external bus. The integrated Checksum Offload Engine automatically handles protocol checksum tasks, reducing host processor overhead during Ethernet packet processing. HP Auto-MDIX allows the device to support connection polarity and crossover handling automatically. This simplifies cabling in embedded systems because the design does not require separate fixed MDI and MDI-X routing. The LAN9210-ABZJ operates from a 1.7 V to 1.9 V CMOS supply and supports parallel 16-bit data and 7-bit addressing, making it suitable for embedded platforms that cannot accommodate a high-speed serial Ethernet host interface. Typical uses include industrial control equipment, factory automation controllers, embedded gateways, network management appliances, test equipment, and compact data-acquisition systems. The integrated MAC/PHY arrangement is especially useful where board space is limited but a reliable 10/100BASE-TX connection is required. A suitable processor must provide compatible bus timing, chip-select logic, and sufficient interrupt handling for Ethernet traffic. When laying out the PCB, follow the manufacturer’s recommended QFN land pattern and thermal-pad via arrangement. The 56-QFN package includes an exposed VSS pad, so electrical and thermal grounding depend on correct pad connection and via placement. Validate signal integrity, supply decoupling, isolation requirements, and connector magnetics against the final board-level design. This page consolidates the key Ethernet features, sourcing guidance, package constraints, and practical design considerations engineers need when integrating the LAN9210-ABZJ into embedded networking equipment. Use the manufacturer datasheet for the complete register map, electrical limits, timing diagrams, and authoritative pin descriptions.
LAN9211-ABZJ - 10/100 Ethernet Controller | Microchip Technology
The Microchip Technology LAN9211-ABZJ is a single-chip 10/100 Base-T Ethernet controller with a parallel host interface, HP Auto-MDIX support, and industrial-temperature capability. The device supports operation from 2.97 V to 3.63 V, operates at 10 Mbit/s or 100 Mbit/s, and is packaged in a 56-pin QFN measuring 8 mm by 8 mm. An Ethernet controller is an interface integrated circuit that connects an embedded host processor to a physical Ethernet network. It combines protocol processing, media access control, and physical-layer signaling into one device. The LAN9211 belongs to the hierarchy of Ethernet controller, network interface controller, interface IC, and semiconductor, reducing the component count and PCB area required for an embedded Ethernet port. The LAN9211-ABZJ provides a 16-bit parallel interface to its host system and integrates a 10/100 Ethernet PHY. HP Auto-MDIX supports automatic handling of straight-through and crossover cable connections, allowing a single RJ45 design to work with common Ethernet cabling arrangements. Its single-chip implementation is intended for embedded applications requiring compact networking with controlled system cost. The manufacturer describes the LAN9211 as a full-featured controller designed for applications where performance, flexibility, ease of integration, and system cost control are important. Its parallel host interface is suitable for processors able to transfer network data through a memory-mapped bus. Firmware and host-driver configuration remain important elements of the integration because interrupt, descriptor, and buffer-management behavior determine practical network throughput. Typical uses include industrial Ethernet equipment, embedded control systems, communications appliances, test instruments, and networked sensors. The 10/100 Mbit/s rate is appropriate for management traffic, serial-to-Ethernet equipment, factory monitoring, and legacy industrial networks. HP Auto-MDIX simplifies field installation by reducing cabling restrictions at the connector. The 56-pin QFN package makes high-density routing possible but requires careful thermal and layout work. Place the exposed ground pad on a multilayer board with a via array and provide the decoupling network shown in the manufacturer datasheet. The package suffix ABZJ identifies the ordered tray configuration, and the QFN land pattern must be designed before assembly. This product page consolidates the exact orderable MPN, core interface and packaging details, manufacturer documentation, sourcing guidance, and design cautions. It also distinguishes documented order information from replacement analysis so engineers can evaluate PCB reuse without assuming that a related Ethernet controller has identical pinout, host timing, or electrical behavior.
LAN9215-MT - 100Mbps Ethernet Controller | Microchip
The Microchip LAN9215-MT is a single-chip 10/100 Ethernet controller with a 100 Mbps data rate, a 16-bit parallel MII interface, and a 100-pin TQFP package measuring 14 x 14 mm. It integrates an Ethernet media-access controller, PHY, and connectivity needed for embedded network equipment. The verified distributor listing identifies it as a 10/100 Base-T/TX PHY controller using a parallel interface, while the manufacturer describes it as a flexible embedded Ethernet solution. An Ethernet controller such as the LAN9215-MT connects an embedded host interface to a physical copper network. Within the hierarchy of integrated circuits, it is an Ethernet interface controller and a networking semiconductor. Its 100 Mbps throughput targets Fast Ethernet networks, while its 16-bit MII provides a parallel connection to a host processor. Integrating the controller and PHY reduces external network-interface component count compared with a discrete MAC-and-PHY design. Verified features include support for 10 Mbps and 100 Mbps operation, HP Auto-MDIX support, driver compatibility with the preceding LAN9118 family, and footprint, register, and driver compatibility with those devices. The manufacturer datasheet states a 2.97 V to 3.63 V supply range and a maximum clock frequency of 25 MHz. A separate component listing describes a 3.3 V device and an operating range from 0°C to +70°C, consistent with the -MT commercial-temperature ordering option. The LAN9215-MT is suitable for embedded Ethernet systems that require a CPU-facing parallel interface rather than a serial SPI host interface. Typical uses include industrial controllers, embedded gateways, test equipment, communications modules, and OEM data-acquisition products. Its 16-bit host interface is particularly appropriate for microprocessors and programmable logic devices able to sustain parallel bus transactions at Ethernet timing requirements. The primary integration consideration is the Ethernet magnetics and analog network path. The manufacturer datasheet notes that supporting HP Auto-MDIX can require different magnetics and passive components plus a minor PCB change. Designers should therefore follow the manufacturer reference schematic and preserve the required layout, power, decoupling, and magnetics implementation rather than treating the controller as a standalone digital component. This page consolidates verified manufacturer and distributor information, practical integration guidance, application fit, and transparent gaps where complete electrical or pin-level data was not provided. The official LAN9215 product page and datasheet remain the controlling references for registers, timing, electrical limits, and reference design implementation as verified on 2026-10-22.
LAN9215-MZP - 10/100 Ethernet Controller | Microchip
The Microchip Technology LAN9215-MZP is a single-chip 10/100 Ethernet controller with an integrated 10/100 Base-T/TX PHY, a 16-bit non-PCI parallel host interface, and a 100-ball LFBGA package. It operates from a 2.97 V to 3.63 V supply, supports an operating temperature range of 0 °C to 70 °C, and is designed for embedded systems requiring medium-performance networking with low CPU overhead. An Ethernet controller is a network interface IC that manages communication between a host processor and an Ethernet physical layer. Within the hierarchy of semiconductor interfaces, the LAN9215 combines protocol handling, media access control, physical-layer signaling, and host-bus integration. The -MZP ordering code identifies the lead-free 100-ball LFBGA package supplied in trays for commercial-temperature applications. Key features include 10/100 Base-T/TX connectivity, 16-bit non-PCI interfacing, HP Auto-MDIX support, and compatibility with the previous-generation LAN9118 family's drivers, registers, and footprint. These characteristics make the device suitable for industrial controllers, embedded data acquisition equipment, access peripherals, and compact network appliances. The 10 × 10 mm LFBGA package also supports space-constrained embedded designs. The controller consolidates the Ethernet MAC and PHY into one device, reducing external component count compared with a discrete MAC-plus-PHY implementation. Its parallel host interface is designed to connect readily with embedded processors that expose a compatible 16-bit bus. According to the manufacturer datasheet, software written for compatible LAN9118-family devices can operate with the LAN9215, supporting migration without redesigning the host driver. Typical applications include industrial Ethernet gateways, programmable controllers, factory monitoring equipment, point-of-sale systems, and embedded test instruments. The integrated Auto-MDIX function supports automatic handling of transmit and receive pair polarity, simplifying cabling in installations where link orientation may vary. Designers must still provide an appropriate Ethernet magnetics and power-network implementation according to the manufacturer guidance. PCB implementation requires careful attention to the 100-ball land pattern, power and ground distribution, PHY-side signal routing, and the 49.9 Ω transmit-termination pull-up specified in the manufacturer placement checklist. Place that pull-up close to the TPO+ ball when Auto-MDIX is enabled, or close to the magnetics when Auto-MDIX is disabled. This page combines verified manufacturer and distributor information with package-specific engineering guidance, sourcing facts, lifecycle caveats, and application-oriented design notes. It distinguishes documented characteristics from parameters that still require confirmation in the complete LAN9215 datasheet and customer design review.
LAN9215I-MT - 10/100 Ethernet Controller | Microchip
The Microchip Technology LAN9215I-MT is a single-chip 10/100 Ethernet controller with an integrated 10/100 Base-T/TX PHY, a 16-bit MII interface, and a 100-pin TQFP package measuring 14 x 14 mm. It is designed for embedded systems that require Ethernet connectivity while controlling system cost and CPU overhead. The verified distributor listing identifies the device as a 10/100 Base-T/TX Ethernet controller with a parallel interface, while the manufacturer describes the LAN9215 family as a full-featured solution for embedded applications. An Ethernet controller is an interface integrated circuit that connects an embedded processor or programmable logic device to an Ethernet physical layer. In this case, the hierarchy is Ethernet controller > network interface controller > interface IC > semiconductor. Combining the controller and PHY reduces external component count, but the LAN9215I-MT still requires an Ethernet magnetics and connector implementation as well as a suitable 16-bit host bus connection. Verified features include a 16-bit MII interface, HP Auto-MDIX support, interrupt generation, 3.3 V operation with wake-up functionality, non-volatile configuration storage, and power-up or reset configuration. These capabilities suit designs requiring controlled Ethernet startup, host interrupt handling, and flexible configuration retention. The controller architecture is described as efficient, with low CPU overhead for medium-performance embedded applications. The LAN9215I-MT supports 10/100 Mb/s Ethernet connectivity, allowing equipment to participate in 10 Mb/s or 100 Mb/s networks. Its integrated controller and PHY simplify the signal chain compared with a discrete Ethernet MAC and separate PHY. The parallel MII interface remains important for embedded processors that do not include an integrated Ethernet MAC and need a conventional external data bus rather than a serial peripheral interface. Typical uses include industrial control equipment, factory automation controllers, embedded gateways, instrumentation, and network-enabled data acquisition systems. In these applications, the MII interface can connect to a host processor, the Auto-MDIX function can simplify straight-through or crossover cable handling, and configuration storage can reduce firmware initialization work. Wake-up and interrupt support also benefit systems that need controlled network activity and event-driven host processing. Designers should follow the manufacturer's TQFP placement checklist, particularly the 49.9 ohm TX termination pull-up arrangement specified for TPO+ when Auto-MDIX is enabled. Confirm the complete package pin assignment, power rails, decoupling requirements, magnetics selection, reference schematic, and PCB constraints against the manufacturer datasheet before releasing a layout. This page consolidates verified manufacturer and distributor information, transparent data gaps, drop-in replacement evidence, and application-focused design guidance. It distinguishes confirmed electrical and packaging facts from unverified details that still require validation against the official LAN9215I documentation.