AM79C989

Quad Ethernet Switching Transceiver (QuEST??

GENERALDESCRIPTION TheAm79C989QuadEthernetSwitchingTransceiver(QuEST™)isafour-portphysicallayer(PHY)devicethatprovidesalloftheanalogfunctionsneededfora10BASE-Tswitch,includingfourindependentManchesterEncode/Decodeunits(MENDECs)andfourindependent10BASE-Ttran

AM79C989

LAN DISCRETE TRANSFORMER MODULES

LANFILTEREDCONNECTORS LANGIGABITICCROSSREFERENCE LAN10/100BASE-TXICCROSSREFERENCE LAN10BASE-TICCROSSREFERENCE

AM79C989

Quad Ethernet Switching Transceiver (QuEST™);

GENERAL DESCRIPTION\nThe Am79C989 Quad Ethernet Switching Transceiver (QuEST™) is a four-port physical layer (PHY) device that provides all of the analog functions needed for a 10BASE-T switch, including four independent Manchester Encode/Decode units (MENDECs) and four independent 10BASE-T transceivers. If the AUI port is used for a 10BASE-2, 10BASE-5, or 10BASE-FL transceiver, one of the four 10BASE-T ports is disabled.DISTINCTIVE CHARACTERISTICS\n■ Four independent 10BASE-T transceivers compliant with the IEEE 802.3 standard\n■ Four digital Manchester Encode/Decode (MENDEC) units\n■ On-chip filtering enables FCC EMI compliance without external filters or common mode chokes\n■ Automatic polarity Correction and Detection on 10BASE-T receivers\n■ Optional Attachment Unit Interface (AUI) for non-10BASE-T transceivers\n■ 10BASE-T Extended Distance option accommodate lines longer than 100 meters\n■ Quad AMD Switching Interface (QuASI™) interface reduces overall pin count\n■ Half-Duplex and Full-Duplex operation\n■ Auto-Negotiation compliant with IEEE 802.3u Standard\n■ Standard MII management interface and protocol\n■ Status Change Interrupt output pin for fast response time to changed conditions\n■ 44-pin PLCC CMOS device\n■ 5 V supply with 3.3 V system interface compatibility

AM79C989JC

Quad Ethernet Switching Transceiver (QuEST??

GENERALDESCRIPTION TheAm79C989QuadEthernetSwitchingTransceiver(QuEST™)isafour-portphysicallayer(PHY)devicethatprovidesalloftheanalogfunctionsneededfora10BASE-Tswitch,includingfourindependentManchesterEncode/Decodeunits(MENDECs)andfourindependent10BASE-Ttran

AM79C989JCT

Quad Ethernet Switching Transceiver (QuEST??

GENERALDESCRIPTION TheAm79C989QuadEthernetSwitchingTransceiver(QuEST™)isafour-portphysicallayer(PHY)devicethatprovidesalloftheanalogfunctionsneededfora10BASE-Tswitch,includingfourindependentManchesterEncode/Decodeunits(MENDECs)andfourindependent10BASE-Ttran