ML4663

Absolute maximum ratings are limits beyond which the life of the integrated circuit may be impaired. All voltages unless otherwise specified are measured with respect to ground.

Power Supply Voltage Range
VCC ................................................................... GND 0.3 to 6V
Input Voltage Range
Digital Inputs
SQEN, LBDIS ....................... GND 0.3 to VCC +0.3V
Tx+, Tx, VIN+, VIN ............... 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 ML4663 single-chip 10BASE-FL transceiver integrates both a ML4662 10BASE-FL transceiver with a ML4622 fiber optic data quantizer to implement a highly integrated solution for 10BASE-FL transceivers. The ML4663 offers a standard IEEE 802.3 AU interface that allows it to be directly connected to industry standard manchester encoder/decoder chips or an AUI connector.

The ML4663 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 drive output that directly drives a fiber optic LED transmitter. The receiver ML4663 offers a highly stable fiber optic data quantizer capable of accepting input signals as low as 2mVP-P with a 55dB dynamic range.

The transmitter ML4663 automatically inserts 1MHz signal during idle time and removes this signal on reception. Low Light is continuously monitored for both activity as well as power level. Five LED status indicators monitor error conditions as well as transmissions, receptions and collisions.