ML2652

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
GND. (Note 1)
VCC supply voltage .................................................. +6.5V
All inputs and outputs ....................... 0.3V to VCC + 0.3V
Input current per pin ............................................. ±25 mA
Power dissipation .............................................. 0.75 Watt
Storage temperature range ........................ 65°C to 150°C
Junction Temperature .............................................. 150°C
Lead temperature (soldering, 10 sec) ....................... 260°C
Thermal Resistance (qJA)
28-Lead PLCC................................................... 60°C/W
44-Lead PLCC................................................... 54°C/W
44-Lead TQFP ................................................... 67°C/W

The ML2652, 10BASE-T Physical Interface Chip, is a complete physical interface for twisted pair and AUI Ethernet applications. It combines a 10BASE-T MAU, Manchester Encoder/Decoder, and Twisted Pair Interface filters in one monolithic IC. A complete DTE interface for twisted pair Ethernet can be implemented by combining the ML2652, an Ethernet controller, and transformers.

The ML2652 can automatically select between an AUI and twisted pair interface based on Link Pulses. Six LED outputs provide complete status at the physical link. Link pulse testing can be enabled or disabled through the LTP LED Pin.

The unique transmitter design of ML2652 uses a waveform generator and low pass filter to meet the 10BASE-T transmitter requirements without the need for an external filter. The differential current driven output reduces common mode which in turn results in very low EMI and RFI noise.

The ML2652 and ML2653 (28 pin version) are implemented in a low power double polysilicon CMOS technology. The ML2653 does not include the AUI interface.