Product Summary
The LXT9785HC is an 8-port Fast Ethernet PHY Transceiver that supports IEEE 802.3 physical layer applications at both 10Mbps and 100Mbps. This device provides both Serial/Source Synchronous (SMII/SS-SMII) and Reduced Media Independent (RMII) Interfaces for switching and other independent port applications. All network ports provide a combination twisted-pair (TP) or pseudo-ECL (PECL) interface for both 10Mbps or 100Mbps (10BASE-T and 100BASE-TX) Ethernet over twisted-pair, or 100Mbps (100BASE-FX) Ethernet over fiber-optic media. The LXT9785HC provides three discrete LED driver outputs for each port. The device supports both half-duplex and full-duplex operation at 10Mbps and 100Mbps and requires only a single 2.5V power supply.
Parametrics
Absolute maximum ratings: (1)Supply voltage, VCC: -0.3 to 3.46V; (2)Operating temperature Ambient, TOPA: 0 to +85℃; (3)Operating temperature Case, TOPC: +120℃; (4)Storage temperature, TST: -65 to +150℃.
Features
Features: (1)Eight IEEE 802.3-compliant 10BASE-T or 100BASE-TX ports with integrated filters; (2)2.5V operation; (3)Optimized for dual-high stacked RJ-45 applications; (4)Proprietary Optimal Signal Processing architecture improves SNR by 3 dB over ideal analog filters; (5)Robust baseline wander correction; (6)100BASE-FX fiber-optic capability on all ports; (7)Supports both auto-negotiation systems and legacy systems without auto-negotiation capability; (8)JTAG boundary scan.; (9)Multiple RMII or SMII/SS-SMII ports for independent PHY port operation.; (10)Configurable via MDIO port or external control pins; (11)Low power consumption; 250 mW per port typical; (12)Auto MDIX crossover capabilities; (13)208-pin PQFP and 241-pin BGA packages; (14)MDIO sectionalization into 2x4 or 1x8 configurations.
Diagrams
LXT901A |
Other |
Data Sheet |
Negotiable |
|
||||||
LXT905 |
Other |
Data Sheet |
Negotiable |
|
||||||
LXT907A |
Other |
Data Sheet |
Negotiable |
|
||||||
LXT914 |
Other |
Data Sheet |
Negotiable |
|
||||||
LXT914A |
Other |
Data Sheet |
Negotiable |
|
||||||
LXT915 |
Other |
Data Sheet |
Negotiable |
|