ML4662

Absolute maximum ratings are those values beyond which the device could be permanently damaged. Absolute maximum ratings are stress ratings only and functional device operation is not implied.

Power Supply Voltage Range
VCC .................................................... GND 0.3 to 6V
Input Voltage Range
Digital Inputs (SQEN, LMONIN, LBDIS)
.............................................. GND 0.3 to VCC + 0.3V
Tx+, Tx, RxIN+, RxIN ........ GND 0.3 to VCC + 0.3V
Input Current
RRSET, RTSET, JAB, CLSN, XMT, RCV, LMON ..... 60mA
Output Current
TxOUT ............................................................... 70mA
Junction Temperature ............................................. 150°C
Storage Temperature Range ..................... 65°C to 150°C
Lead Temperature (Soldering) ................................. 260°C
Thermal Resistance (qJA) ...................................... 68°C/W

The ML4662 10Base-FL transceiver combined with the ML4622 or ML4624 fiber optic quantizers provides all of the functionality required to implement both an internal and external IEEE 802.3 10Base-FL MAU. The ML4662 offers a standard IEEE 802.3 AU interface that allows it to be directly connected to industry standard manchester encoder/decoder chips or and AUI cable.

The ML4662 provides a highly integrated solution that requires a minimal number of external components, and is compliant to the IEEE 802.3 10Base-FL standard. The transmitter offers a current driven output that directly drives a fiber optic LED transmitter. Jabber, a 1MHz idle signal, and SQE Test are fully integrated onto the chip.

The receiver ML4662 accepts and ECL level input coming from the ML4622 or ML4624 fiber optic quantizers. The 1MHz idle signal is removed and the AUI output is activated when the receive squelch criteria is exceeded. A Link Monitor function is also provided for low light detection.