LXT974/975
- Fast Ethernet Quad Transceiver
10/100-TX or 100BASE-FX Switches and multi-port NICs LXT975 optimized for dual-high stacked modular RJ45 applications
Four independent IEEE 802.3-compliant 10BASE-T or 100BASE-TX ports 100BASE-FX fiber-optic capable Standard CSMA/CD or full-duplex operation Supports auto-negotiation and legacy systems without auto-negotiation capability Baseline wander correction 100BASE-TX line performance over 130 meters Configurable LED drivers and serial LED output Configurable through MII serial port or via external control pins
Note - Not recommended for new designs; End-of-Life in process-see PCN
The LXT974 and LXT975 are four-port PHY Fast Ethernet Transceivers which support IEEE 802.3 physical layer applications at both 10 Mbps and 100 Mbps. They provide all of the active circuitry to interface four 802.3 Media Independent Interface (MII) compliant controllers to 10BASE-T and/or 100BASE-TX media. All four ports on the LXT974 provide a combination twisted-pair (TP) or pseudo-ECL (PECL) interface for a 10/100BASE-TX or 100BASE-FX connection.
Applications
Features and Benefits
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Product Change Notifications
| PCN106766 - 02 | Ethernet Phy, MAC, Framers, T1/E1, Legacy Phy and Framers - Product Marking and Packaging Change, Product Marking | 2006-Oct-12 |
| PCN0107-02.1 | Ethernet Phy, MAC, Framers, T1/E1, Legacy Phy and Framers - Product Marking Change | 2007-Jan-24 |
| DCL200711-01 | Early Shipments due to IT Shutdown and Conversion | 2007-Nov-06 |
| DCL0108-01.0 | Product Code Change | 2008-Jan-04 |
| DCL200802-01.0 | Cortina Systems, Inc. Products (Ethernet Phy, MAC, Framers, T1/E1, Transport and Legacy Phy, & EPON), DCL200802-01.0; FYI – Europe & Middle Eastern Region Orders and Payment Transition | 2008-Feb-05 |
| PCN0308-04.0 | Cortina Systems, Pack Change, Select QFP's | 2008-Mar-25 |
| PCN0308-01.0 | Cortina Systems, Product Marking Change, FYI | 2008-Mar-13 |
| DCL200804-01 | Cortina Systems, Inc. Products (Ethernet Phy, MAC, Framers, T1/E1, Transport and Legacy Phy, & EPON), ; FYI – Latin America Regions Order and Payment Transition, DCL200804-01 | 2008-Apr-14 |
| PCN400883 | Cortina Systems, LXT974/LXT975 10/100 Quad PHY, Product Discontinuance, PCN400883 | 2009-Mar-11 |
| PCN401000 | Cortina Systems, Transport Media Label Change, PCN401000, FYI | 2009-Jul-16 |