ML4667

·Combined with the ML4622 or ML4624, offers a complete implementation of an 10Base-FL Medium Attachment Unit (MAU)
·Pin compatible with the ML4662 Transceiver
·Incorporates an AU interface for use in an external MAU or an internal MAU
·100mA max LED output current drive
·Single +5 volt supply ±10%
·No crystal or clock required
·On-chip Jabber, 1MHz idle, and SQE Test with enable/ disable option
·Five network status LED outputs

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 +0.3
Tx+, Tx, RxIN+, RxIN ............ GND 0.3 to VCC +0.3
Input Current
RRSET, RTSET, JAB, CLSN, XMT, RCV, LMON...... 60mA
Output Current
TxOUT .............................................................. 120mA
Junction Temperature .............................................. 150°C
Storage Temperature Range .................... 65°C to +150°C
Lead Temperature (Soldering) .................................. 260°C
Thermal Resistance (qJA) ...................................... 68°C /W

The ML4667 is a low power high output current pin compatible version of the industry standard ML4662. The ML4667 10Base-FL transceiver combined with either the ML4622 or ML4624 fiber optic quantizer provide all functionality required to implement both an internal and external IEEE 802.3 10Base-FL MAU interface that allows it to be directly connected to industry standard manchester encoder/decoder chips or and AUI cable. The ML4667 provides a highly integrated solution that requires a minimal number of external components. The ML4667 is compliant to the IEEE 802.3 10Base-FL standard. The transmitter offers a 100mA maximum 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 ML4667 accepts and ECL level input from the ML4622 or ML4624 fiber optic quantizer. 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.