The KSZ8081xxx is a single-supply 10Base-T/100Base-TX Ethernet physical-layer transceiver for transmission and reception of data over standard CAT-5 unshielded twisted pair (UTP) cable.
The KSZ8081xxx is a highly-integrated PHY solution. It reduces board cost and simplifies board layout by using on-chip termination resistors for the differential pairs and by integrating a low-noise regulator to supply the 1.2V core, and by offering 1.8/2.5/3.3V digital I/O interface support.
The KSZ8081RNx offers the Reduced Media Independent Interface (RMII) for direct connection to RMII-compliant MACs in Ethernet processors and switches.
As the power-up default, the KSZ8081RNA uses a 25MHz crystal to generate all required clocks, including the 50MHz RMII reference clock output for the MAC. The KSZ8081RND is the version that takes in the 50MHz RMII reference clock as the power-up default.
The KSZ8081MLX and KSZ8081MNX offer the Media Independent Interface (MII) for direct connection with MII-compliant Ethernet MAC processors and switches. A 25MHz crystal is used to generate all required clocks.
To facilitate system bring-up and debugging in production testing and in product deployment, parametric NAND tree support enables fault detection between KSZ8081RNA I/Os and the board. Microchip's LinkMD® TDR-based cable diagnostics identify faulty copper cabling.
The KSZ8081RNA and KSZ8081RND are available in 24-pin, lead-free QFN packages. The KSZ8081MNX and KSZ8081RNB are available in 32-pin, lead-free QFN packages. The KSZ8081MLX is available in 48-pin (7mm x 7mm) LQFP package.
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Features
| Parameter
|
KSZ8081MLX - 10Base-T/100Base-TX PHY | Data Sheets | 11/06/2015 | 1317KB | |
KSZ8081MNX/RNB - 10Base-T/100Base-TX PHY | Data Sheets | 11/06/2015 | 1303KB | |
KSZ8081RNA/RND - 10Base-T/100Base-TX PHY with RMII Support | Data Sheets | 11/06/2015 | 1147KB | |
KSZ8021_31 to KSZ8081_91 (24-QFN) Migration_update | Migration Documents | 10/16/2015 | 162KB | |
KSZ8051 to KSZ8081_91 (32-QFN) Migration | Migration Documents | 10/16/2015 | 238KB | |
KSZ8051 to KSZ8081_91 (32-QFN) Migration_update | Migration Documents | 10/16/2015 | 427KB | |
AN2157 - Transient Protection in Power Over Ethernet Applications | AppNote | 05/24/2016 | 229KB | ![]() |
Micrel AN 109 - Unmanaged Ethernet Redundant Ring | AppNote | 10/02/2015 | 67KB | ![]() |
Micrel AN 114 - Virtual LAN | AppNote | 10/02/2015 | 85KB | ![]() |
Micrel AN 24 - Ethernet over POF | AppNote | 10/01/2015 | 149KB | ![]() |
Micrel AN 25 - EtherSynch - Synchronization Perfected | AppNote | 10/01/2015 | 267KB | ![]() |
Micrel AN 27 - Fast Ethernet: Delivery of Data in Industrial Applications | AppNote | 10/01/2015 | 108KB | ![]() |
Micrel AN 31 - General PCB Design and Layout Guidelines | AppNote | 10/01/2015 | 104KB | ![]() |
Micrel AN 32 - Get in Sync! | AppNote | 10/01/2015 | 1432KB | ![]() |
Micrel AN 44 - Interfacing Fast Ethernet to Processors | AppNote | 10/01/2015 | 149KB | ![]() |
Micrel AN 45 - Interfacing Fast Ethernet Transceivers to MAC Processors | AppNote | 10/01/2015 | 122KB | ![]() |
Micrel AN 8 - Capacitive Coupling Ethernet Transceivers without Using Transformers | AppNote | 09/30/2015 | 103KB | ![]() |
Micrel AN 81 - PHY Speed and Duplex Configuration | AppNote | 10/02/2015 | 132KB | ![]() |
Micrel AN 91 - Reducing Maintenance Costs With Cable Diagnosis and Micrels LinkMD | AppNote | 10/02/2015 | 420KB | ![]() |
Driver is located in Linux Kernel | Software Library | 02/01/2016 | ||
KSZ8081_8091MLX_v1.2_DP.zip | Design Guides | 02/19/2016 | 3175KB | |
KSZ8081_8091MNX_v1.2_DP.zip | Design Guides | 02/19/2016 | 6112KB | |
KSZ8081_8091RNB_v1.2_DP.zip | Design Guides | 02/19/2016 | 3645KB | |
KSZ8081RNA-RND_v1.2_DP.zip | Design Guides | 02/19/2016 | 3323KB |
Part Number | Leads | Package Type | Temp Range | Packing | 1+ | 26+ | 100+ | 1000+ | 5000+ |
---|---|---|---|---|---|---|---|---|---|
KSZ8081MLXCA | 48 | LQFP | 0C to +70C | TRAY | 1.26 | 1.05 | 0.95 | 0.88 | 0.84 |
KSZ8081MLXCA-TR | 48 | LQFP | 0C to +70C | T/R | 1.26 | 1.05 | 0.95 | 0.88 | 0.84 |
KSZ8081MLXIA | 48 | LQFP | -40C to +85C | TRAY | 1.54 | 1.28 | 1.16 | 1.08 | 1.02 |
KSZ8081MLXIA-TR | 48 | LQFP | -40C to +85C | T/R | 1.54 | 1.28 | 1.16 | 1.08 | 1.02 |
KSZ8081MNXCA | 32 | VQFN | 0C to +70C | TRAY | 1.09 | 0.91 | 0.82 | 0.76 | 0.72 |
KSZ8081MNXCA-TR | 32 | VQFN | 0C to +70C | T/R | 1.09 | 0.91 | 0.82 | 0.76 | 0.72 |
KSZ8081MNXIA-TR | 32 | VQFN | -40C to +85C | T/R | 1.37 | 1.14 | 1.04 | 0.96 | 0.91 |
KSZ8081RNACA | 24 | VQFN | 0C to +70C | TRAY | ** | ** | ** | ** | ** |
KSZ8081RNACA-TR | 24 | VQFN | 0C to +70C | T/R | 1.01 | 0.84 | 0.76 | 0.71 | 0.67 |
KSZ8081RNAIA-G3XX | 24 | VQFN | -40C to +85C | TRAY | ** | ** | ** | ** | ** |
KSZ8081RNAIA-G3XX-TR | 24 | VQFN | -40C to +85C | T/R | ** | ** | ** | ** | ** |
KSZ8081RNAIA-TR | 24 | VQFN | -40C to +85C | T/R | 1.26 | 1.05 | 0.95 | 0.88 | 0.84 |
KSZ8081RNBCA-G3XX | 32 | VQFN | 0C to +70C | TRAY | ** | ** | ** | ** | ** |
KSZ8081RNBCA-G3XX-TR | 32 | VQFN | 0C to +70C | T/R | ** | ** | ** | ** | ** |
KSZ8081RNBCA-TR | 32 | VQFN | 0C to +70C | T/R | 1.09 | 0.91 | 0.82 | 0.76 | 0.72 |
KSZ8081RNBIA-G3XX | 32 | VQFN | -40C to +85C | TRAY | ** | ** | ** | ** | ** |
KSZ8081RNBIA-G3XX-TR | 32 | VQFN | -40C to +85C | T/R | ** | ** | ** | ** | ** |
KSZ8081RNBIA-TR | 32 | VQFN | -40C to +85C | T/R | 1.37 | 1.14 | 1.04 | 0.96 | 0.91 |
KSZ8081RNDCA-G3XX | 24 | VQFN | 0C to +70C | TRAY | ** | ** | ** | ** | ** |
KSZ8081RNDCA-G3XX-TR | 24 | VQFN | 0C to +70C | T/R | ** | ** | ** | ** | ** |
KSZ8081RNDCA-TR | 24 | VQFN | 0C to +70C | T/R | 1.01 | 0.84 | 0.76 | 0.71 | 0.67 |
KSZ8081RNDIA-TR | 24 | VQFN | -40C to +85C | T/R | 1.26 | 1.05 | 0.95 | 0.88 | 0.84 |
PartNumber | DeviceWeight | ShippingWeight | LeadCount | PackageType | PackageWidth | SolderComposition | JEDECIndicator | RoHS | ChinaEFUP |
---|---|---|---|---|---|---|---|---|---|
KSZ8081MLXCA-TR | 0.155500 | 0.768000 | 48 | LQFP | 7x7x1.4mm | Matte Tin | e3 | ![]() | ![]() |
KSZ8081MLXIA | 0.155500 | 0.694000 | 48 | LQFP | 7x7x1.4mm | Matte Tin | e3 | ![]() | ![]() |
KSZ8081MLXCA | 0.155500 | 0.694000 | 48 | LQFP | 7x7x1.4mm | Matte Tin | e3 | ![]() | ![]() |
KSZ8081MLXIA-TR | 0.155500 | 0.768000 | 48 | LQFP | 7x7x1.4mm | Matte Tin | e3 | ![]() | ![]() |
KSZ8081MNXCA | 0.061400 | 0.408163 | 32 | VQFN | 5x5x0.9mm | Matte Tin | e3 | ![]() | ![]() |
KSZ8081RNBIA-TR | 0.061400 | 0.350000 | 32 | VQFN | 5x5x0.9mm | Matte Tin | e3 | ![]() | ![]() |
KSZ8081RNBCA-TR | 0.061400 | 0.350000 | 32 | VQFN | 5x5x0.9mm | Matte Tin | e3 | ![]() | ![]() |
KSZ8081MNXCA-TR | 0.061400 | 0.350000 | 32 | VQFN | 5x5x0.9mm | Matte Tin | e3 | ![]() | ![]() |
KSZ8081MNXIA-TR | 0.061400 | 0.350000 | 32 | VQFN | 5x5x0.9mm | Matte Tin | e3 | ![]() | ![]() |
KSZ8081RNBIA-G3XX | 0.064100 | 0.099219 | 32 | VQFN | 5x5x0.9mm | NiPdAu | e4 | ![]() | ![]() |
KSZ8081RNBIA-G3XX-TR | 0.064100 | 0.214000 | 32 | VQFN | 5x5x0.9mm | NiPdAu | e4 | ![]() | ![]() |
KSZ8081RNBCA-G3XX | 0.064100 | 0.099219 | 32 | VQFN | 5x5x0.9mm | NiPdAu | e4 | ![]() | ![]() |
KSZ8081RNBCA-G3XX-TR | 0.064100 | 0.214000 | 32 | VQFN | 5x5x0.9mm | NiPdAu | e4 | ![]() | ![]() |
KSZ8081RNDCA-G3XX | 0.042200 | 0.555102 | 24 | VQFN | 4x4x0.9mm | NiPdAu | e4 | ![]() | ![]() |
KSZ8081RNDCA-G3XX-TR | 0.042200 | 0.204000 | 24 | VQFN | 4x4x0.9mm | NiPdAu | e4 | ![]() | ![]() |
KSZ8081RNAIA-G3XX | 0.042200 | 0.555102 | 24 | VQFN | 4x4x0.9mm | NiPdAu | e4 | ![]() | ![]() |
KSZ8081RNAIA-G3XX-TR | 0.042200 | 0.204000 | 24 | VQFN | 4x4x0.9mm | NiPdAu | e4 | ![]() | ![]() |
KSZ8081RNACA | 0.038700 | 0.555102 | 24 | VQFN | 4x4x0.9mm | Matte Tin | e3 | ![]() | ![]() |
KSZ8081RNACA-TR | 0.038700 | 0.204000 | 24 | VQFN | 4x4x0.9mm | Matte Tin | e3 | ![]() | ![]() |
KSZ8081RNAIA-TR | 0.038700 | 0.204000 | 24 | VQFN | 4x4x0.9mm | Matte Tin | e3 | ![]() | ![]() |
KSZ8081RNDCA-TR | 0.038700 | 0.204000 | 24 | VQFN | 4x4x0.9mm | Matte Tin | e3 | ![]() | ![]() |
KSZ8081RNDIA-TR | 0.038700 | 0.204000 | 24 | VQFN | 4x4x0.9mm | Matte Tin | e3 | ![]() | ![]() |