LAN91C96-MU - 10Mbps Ethernet Controller | Microchip Technology
Teilenummer: LAN91C96-MU ✓ AktivLAN91C96-MU Übersicht
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.
Drop-in-Alternativen für LAN91C96-MU – gleiches Gehäuse, Pin-kompatibel. Bauteile mit anderem Gehäuse, die eine PCB-Überarbeitung erfordern, sind ausgeschlossen.
Varianten dieser Serie
Modelle derselben Serie, die drop-in-kompatibel sind mit LAN91C96-MU (gleiche Bauform und Footprint) – abweichend in Packet RAM, Supply Voltage.
LAN91C96-MS
✅ Drop-InPreis auf Anfrage
Datenblatt ansehen →LAN91C96I-MU
✅ Drop-In📋 Referenzalternative (nicht im Katalog)
LAN91C96TQFP
✅ Drop-In📋 Referenzalternative (nicht im Katalog)
LAN91C96ITQFP
✅ Drop-In📋 Referenzalternative (nicht im Katalog)
LAN91C96-MU Technische Daten
| Device Type | Local Area Network Controller |
| Ethernet Data Rate | 10 Mbps |
| Physical Layer | 10BASE-T PHY with parallel interface |
| Versorgungsspannung | 3.3 V and 5 V |
| Technology | CMOS |
| Gehäuse | 100-TQFP, 14 x 14 mm |
| Pin-Anzahl | 100 pins |
| Montageart | Surface Mount |
| Integrated Functions | MAC, physical layer, and packet RAM |
| Host Interfaces | Local Bus, PCMCIA, and Motorola 68000 bus |
| Packet RAM | 6 kB |
| Duplex Support | Full Duplex Switched Ethernet |
| Transmit Queue | Enhanced Transmit Queue Management |
| Software Compatibility | Pin and software compatible with LAN91C92 and LAN91C94 in Local Bus mode |
LAN91C96-MU 100-tqfp, 14 x 14 mm Pinbelegungsleitfaden
Pinbelegung für LAN91C96-MU (100-tqfp, 14 x 14 mm-Gehäuse). Pin-Nummerierung, Funktionen und Anschlussdiagramme sind im Herstellerdatenblatt definiert. Entnehmen Sie diesem den genauen Footprint und Lötrichtlinien.
Keine detaillierten Pinbelegungsdaten verfügbar für LAN91C96-MU.
Siehe die Datenblatt für die vollständige Pin-Konfiguration.
Typische Anwendungen
LAN91C96-MU ist geeignet für 6 Anwendungs: Embedded Industrial Ethernet Controller, PCMCIA Ethernet Socket Adapter, Legacy Local Bus Network Upgrade, Motorola 68000 Embedded System, Legacy Network Interface Card, Factory Data Acquisition Gateway.
Embedded Industrial Ethernet Controller
The LAN91C96-MU fits embedded industrial equipment that needs a dedicated 10Mbps Ethernet node without a separate MAC and PHY. Its integrated MAC, 10BASE-T physical layer, and 6 kB packet RAM reduce external hardware while the Local Bus, PCMCIA, and Motorola 68000 interfaces provide access to multiple host architectures. According to the manufacturer documentation, full-duplex switched Ethernet and enhanced transmit queue management support practical network traffic handling. Designers should still validate bus timing, driver support, magnetics, and isolation requirements against the complete industrial system rather than treating the controller as a board-independent network interface.
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PCMCIA Ethernet Socket Adapter
The LAN91C96-MU is applicable to a PCMCIA Ethernet socket adapter because Microchip identifies support for a true single-chip, single-function PCMCIA Ethernet interface. The 10Mbps MAC, 10BASE-T PHY, and 6 kB packet RAM are integrated into one 100-pin TQFP, which can simplify adapter-board assembly compared with a discrete Ethernet implementation. The finished adapter still depends on correct PCMCIA connector routing, bus timing, network magnetics, termination, and compatible host software. The datasheet’s LAN91C92 and LAN91C94 compatibility statement should be applied specifically to Local Bus mode, not assumed for every PCMCIA configuration.
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Legacy Local Bus Network Upgrade
The LAN91C96-MU can modernize a legacy Local Bus system that needs Ethernet connectivity while retaining a processor-oriented host interface. According to the manufacturer datasheet, the LAN91C96 is 100% pin and software compatible with the LAN91C92 and LAN91C94 in Local Bus mode, providing a clear migration path for qualifying designs. Its 10Mbps rate, integrated MAC and PHY, and 6 kB packet RAM provide a complete Ethernet node in one controller. Before replacement, verify signal levels, bus timing, driver revisions, memory decoding, magnetics, and the intended operating-temperature range of the original equipment.
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Motorola 68000 Embedded System
The LAN91C96-MU is suitable for a Motorola 68000-family embedded controller that requires a dedicated Ethernet connection. Supporting the Motorola 68000 bus alongside Local Bus and PCMCIA allows the controller to serve systems with established processor and memory architectures. The integrated 10Mbps MAC, 10BASE-T PHY, and packet RAM avoid implementing those functions separately, while full-duplex switched Ethernet supports modern switched-network infrastructure. Integration must account for processor bus timing, interrupt handling, address decoding, software driver support, clock requirements, and the external transformer or magnetics arrangement required by the target Ethernet physical interface.
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Legacy Network Interface Card
The LAN91C96-MU can serve as the central Ethernet controller in a custom legacy network interface card built around a Local Bus or PCMCIA host interface. A single 100-TQFP device provides the 10Mbps MAC, 10BASE-T PHY, packet RAM, and transmit-queue functions, reducing the number of separate network chips on the board. The integrated 6 kB buffer can smooth host-service latency and support enhanced Ethernet traffic handling. The card design must still allocate the correct bus transceivers, address logic, interrupt routing, clock circuitry, isolation, RJ-45 magnetics, and suitable multilayer or properly referenced PCB layout.
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Factory Data Acquisition Gateway
The LAN91C96-MU can provide Ethernet connectivity for a factory data-acquisition gateway built around a legacy embedded processor. The controller’s 10Mbps Ethernet rate, integrated packet RAM, and multiple host-bus options make it appropriate for equipment that periodically transfers measurements, status, and configuration records to a supervisory network. Full-duplex switched Ethernet can coexist with modern infrastructure, while enhanced transmit queue management helps organize outbound traffic. A robust industrial implementation should add appropriate galvanic isolation, surge protection, environmental filtering, controlled impedance routing, and verified EMC design around the Ethernet physical interface.
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Zusammenfassung der empfohlenen Produkte
Technische Referenzdaten für LAN91C96-MU – Vergleich, Designhinweise und Compliance-Informationen.
Auswahlhilfe
Vergleich mit Alternativen
| Parameter | Dieses Produkt | LAN91C96-MS | LAN91C96I-MU | LAN91C96TQFP | LAN91C96ITQFP |
|---|---|---|---|---|---|
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Package | 100-TQFP (14 x 14 mm) | 100-TQFP (14 x 14 mm) | 100-TQFP (14 x 14 mm) | 100-TQFP (14 x 14 mm) | 100-TQFP (14 x 14 mm) |
| Ethernet Data Rate | 10 Mbps | 10 Mbps | 10 Mbps | 10 Mbps | 10 Mbps |
| Supply Voltage | 3.3 V and 5 V | 3.3 V and 5 V | 3.3 V and 5 V | 3.3 V and 5 V | 3.3 V and 5 V |
| Integrated Functions | MAC, PHY, and packet RAM | MAC, PHY, and packet RAM | MAC, PHY, and packet RAM | MAC, PHY, and packet RAM | MAC, PHY, and packet RAM |
| Host Interfaces | Local Bus, PCMCIA, and Motorola 68000 bus | Local Bus, PCMCIA, and Motorola 68000 bus | Local Bus, PCMCIA, and Motorola 68000 bus | Local Bus, PCMCIA, and Motorola 68000 bus | Local Bus, PCMCIA, and Motorola 68000 bus |
| Packet RAM | 6 kB | 6 kB | 6 kB | 6 kB | 6 kB |
Wichtigste Unterscheidungsmerkmale
- Complete single-chip Ethernet node integration (vs. LAN91C96-MS)
- Three host-interface choices in one controller (vs. LAN91C96I-MU)
- Documented Local Bus migration path (vs. LAN91C96TQFP)
- Full-duplex switched Ethernet with enhanced transmit queue management (vs. LAN91C96ITQFP)
Designhinweise
Route the 10BASE-T physical network interface and its associated magnetics or transformer according to the manufacturer reference layout. Keep the network-side traces away from sensitive host-bus and clock lines, provide a solid ground reference, and follow the Ethernet magnetics supplier’s creepage and isolation guidance. The supplied evidence identifies a parallel 10BASE-T PHY but does not provide a verified external magnetics part number, so designers must consult the official application circuit rather than infer it.
Do not treat every LAN91C96 suffix as automatically interchangeable. The verified data identifies LAN91C96-MU as a 100-TQFP, 10Mbps, 3.3 V/5 V device, while comparison pages distinguish -MU, -MS, I-grade, and plain TQFP orderings. Before replacing the component, compare the exact package, temperature grade, bus mode, software compatibility, and qualification markings. The 100-pin footprint similarity alone is not proof of a safe production substitution.
Review address, nREG, nCE1, nWE, and nOE timing in the host-bus interface using the manufacturer PDF. The verified datasheet excerpt confirms the use of address A0-A9 and A15 together with these control signals. Preserve the specified bus direction and access-cycle behavior during PCB routing, and avoid adding long stubs or uncontrolled branch points that could compromise legacy Local Bus or PCMCIA signal integrity.
Design the 3.3 V and 5 V supply distribution around the voltage requirements of the selected LAN91C96 ordering option and the host-bus level. The verified data confirms 3.3 V/5 V operation but does not provide current ratings, tolerance limits, or recommended capacitor values. Verify those details in the manufacturer datasheet, place local bypass capacitors at the supply pins according to that guidance, and isolate noisy digital or switching-regulator regions from the Ethernet physical interface.
Compliance-Informationen
The supplied verified data identifies a green 100-pin QFP package in one distributor snippet but does not explicitly establish RoHS, REACH, halogen-free, or conflict-minerals compliance. AEC-Q100 is not applicable to this general-purpose Ethernet controller based on the supplied product information.
