78Q8392LA03

www.DataSheet4U.com 78Q8392L/A03 Low Power Ethernet Coaxial Transceiver November 2008 DESCRIPTION The 78Q8392L/A03 Ethernet Transceiver is a replacement for the SSI/TDK/Teridian 78Q8392L/A02 coax line transmitter/receiver. Only a single resistor value change is required for upgrading an existing 78Q8392L/A02 design to the 78Q8392L/A03. The device includes analog transmit and receive buffers, a 10 MHz on-board oscillator, timing logic for jabber and heartbeat functions, output drivers and bandgap reference, in addition to a current reference and collision detector. This transceiver provides the interface between the single-ended coaxial cable signals and the Manchester-encoded differential logic signals. Primary functional blocks include the receiver, transmitter, collision detection and jabber timer. This IC may be used in either internal or external MAU environments. The 78Q8392L/A03 is available in lead-free 16-pin plastic and 28-pin PLCC packages. FEATURES Very low power consumption Compliant w ith Ethernet II, IEEE 802.3 10Base5 and 10Base2 Integrates all transceiver functions except signal and power isolation Innovative design minimizes external component count and power consumption Jabber timer function integrated on chip Externally selectable CED heartbeat allows operation with IEEE 802.3 compatible repeaters Squelch circuitry at all inputs rejects noise Power-on reset and test modes Advanced BiCMOS process CONNECT DIAGRAM 510 ±5% x4 1 COLLISION...