Features: *Repeater functions comply with IEEE 802.3 Repeater Unit specification*Eight Integral 10BASE-T transceivers utilize the required pre-distortion transmission technique*Two Attachment Unit Interface (AUI) ports allow connection with 10BASE5 (Ethernet) and 10BASE2 (Cheapernet) networks*Desi...
DM9081: Features: *Repeater functions comply with IEEE 802.3 Repeater Unit specification*Eight Integral 10BASE-T transceivers utilize the required pre-distortion transmission technique*Two Attachment Unit I...
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Supply Voltage (VDD)...................... ...... -0.5V to +7.0V
DC Input Voltage (VIN )...................-0.5V to VCC +0.5V
DC Output Voltage (VOUT)..............-0.5V to VCC +0.5V
Storage Temperature Range (Tstg).......-65to +150
Power Dissipation (PD).........................................1.2W
Lead Temp. (TL) (Soldering, 10sec.).....................260
ESD Rating (Rzap=1.5K, Czap=100pF)................2000V
The 10BASE-T Hub Controller (DM9081) provides a system level solution for designing IEEE-compliant 802.3 repeaters that incorporate 10BASE-T transceivers. DM9081 integrates the repeater functions specified by section 9 of the IEEE 802.3 standard. The Twisted Pair transceiver is compliant with 10BASE-T standards. The DM9081 provides eight integral Twisted Pair Media Attachment Units (MAUs) and two Attachment Unit Interface (AUI) ports in a 100-pin QFP package. The total number of ports per repeater unit can be increased by connecting multiple DM9081 chips via their expansion ports. The DM9081 supports LED drivers to monitor port status. It displays Link, Carrier Sense,Collision, Partition, and Bit Rate Error Status. In minimum mode, Link, Carrier Sense, and Collision Status can be displayed without external TTL devices.