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ML4668

Micro Linear
Part Number ML4668
Manufacturer Micro Linear
Description Low Power Single Chip 10BASE-FL Transceiver
Published May 7, 2005
Detailed Description March 1997 ML4668 Low Power Single Chip 10BASE-FL Transceiver GENERAL DESCRIPTION The ML4668 single-chip 10BASE-FL tran...
Datasheet PDF File ML4668 PDF File

ML4668
ML4668


Overview
March 1997 ML4668 Low Power Single Chip 10BASE-FL Transceiver GENERAL DESCRIPTION The ML4668 single-chip 10BASE-FL transceiver is a low power, high output current, plug-compatible version of the industry standard ML4663.
The ML4668 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 ML4668 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 100mA maximum current drive output that directly drives a fiber optic LED transmitter.
The receiver 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 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.
FEATURES s s s s s s s s Single chip solution for 10BASE-FL internal or external Medium Attachment Units (MAUs) Incorporates an AU interface Highly stable data quantizer with 55dB input dynamic range Input sensitivity as low as 2mVP-P Up to 100mA maximum current driven fiber optic LED driver for accurate launch power Single +5 volt supply No crystal or clock required Five network status LED outputs BLOCK DIAGRAM SQEN/JABD 5 +5V VCCTx (+5V) 17 RTSET 12 GND 20 AVCC 27 Tx+ 10 Tx– 11 AUI RECEIVER FIBER OPTIC LED DRIVER 18 TxOUT 15 XMT Tx SQUELCH 1MHz IDLE SIGNAL JABBER LED DRIVERS 16 RCV 1 CLSN 28 JAB SQE BIAS COL+ 2 COL– 3 RECEIVE SQUELCH AUI DRIVER 10MHz GATED OSCILLATOR 14 LMON AMP Tx Rx+ 6 Rx– 7 AUI DRIVER LOOPBACK MUX Rx 26 V + IN 25 VIN– CMP ∫ VREF LINK DETECT 19 9 13 8 24 4 21 VDC 22 VREF 23 VTHADJ GND VCC (+5V) RRSET LBDIS +5V AGND CTIMER 1 ML4668 PIN CONNECT...


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