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ML4668CQ, ML4669, ML4669CH

Table of contents:
Info of ML4668CQ
Info of ML4669
Info of ML4669CH

ML4668CQ, ML4669, ML4669CH Selling Leads, Datasheet

MFG:ML Package Cooled:PLCC D/C:2006+

ML4668CQ, ML4669, ML4669CH Datasheet download

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Part Number: ML4668CQ

MFG: ML

Package Cooled: PLCC

D/C: 2006+

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ML4669 General Description

The fully pin-compatible ML4664/ML4669 pair provide conversion from 10BASE-T copper media to 10BASE-FL fiber media in a single chip. They are compliant with Ethernet IEEE 802.3 10BASE-T and 10BASE-FL standards. The ML4664/69 uses a single 5V supply, and requires no crystal or clock.

Their 10BASE-FL transmitter offers a current drive output that directly drives a fiber optic LED transmitter. Their 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 10BASE-T portion of the pair contains current driven transmitter outputs that offer superior performance because their switching is highly symmetric, resulting in lowered RFI noise and jitter. By changing one external resistor the pair easily interfaces to 100W unshielded twisted pair, 150W shielded twisted pair, or a range of other characteristic impedances.

The ML4664 does not pass along disconnect information, while the ML4669 does. A loss of light at the optical inputs does not stop link pulses from being sent at the twisted pair transmitter in the ML4664, but in the ML4669 the link pulses stop. Also, a loss of link at the twisted pair inputs will not stop the optical transmitter from sending idle in the ML4664, but the ML4669 stops sending idle.

ML4669 Maximum Ratings

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, LBDIS) ....................... GND 0.3 to VCC +0.3V
Tx+, Tx, VIN+, VIN .............. GND 0.3 to VCC +0.3V
Junction Temperature............................................. 150°C
Storage Temperature ................................ 65°C to 150°C
Lead Temperature (Soldering) ................................ 260°C
Thermal Resistance (qJA)
PLCC ...............................................................68°C/W
TQFP ............................................................... 80ºC/W

ML4669 Features

·Full duplex operation
·Five network status LED outputs
·Industrial temperature option
·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 output for accurate launch power (PLCC package)
·Current driven output for low RFI noise and low jitter
·Drives 100W unshielded or 150W shielded twisted pair
·Polarity detect status pin capable of driving an LED
·Automatic polarity correction
·On-chip link test with enable/disable option

ML4669 Connection Diagram

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