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Product Descriptions

The 78Q2123 and 78Q2133, MicroPHYTM, are the smallest 10BASE-T/100BASE-TX Fast Ethernet transceivers in the market. They include integrated MII, ENDECs, scrambler/descrambler, dual-speed clock recovery, and full-featured auto-negotiation functions. The transmitter includes an on-chip pulseshaper and a low-power line driver. The receiver has an adaptive equalizer and a baseline restoration circuit required for accurate clock and data recovery.

The transceiver interfaces to Category-5 unshielded twisted pair (Cat-5 UTP) cabling for 100BASE-TX applications, and Category-3 unshielded twisted pair (Cat-3 UTP) for 10BASE-T applications. The MDI is connected to the line media via dual 1:1 isolation transformers. No external filter is required. Interface to the MAC is accomplished through an IEEE-802.3 compliant Media Independent Interface (MII). The 78Q2123/78Q2133 are intended to serve the embedded Ethernet market, tailored specifically to the needs of game consoles, broadband modems, printers, set top boxes and audio/visual equipment. It is designed for low-power consumption and operates from a single 3.3V supply. The 78Q2123 is rated for commercial temperature range and the 78Q2133 is rated for industrial temperature range.

Product Features

? Smallest 10/100 PHY available

? 10BASE-T/100BASE-TX IEEE-802.3 compliant TX and RX functions requiring a dual 1:1 isolation transformer interface to the line

? Integrated MII, 10BASE-T/100BASE-TX ENDEC, 100BASE-TX scrambler/descrambler, and full-featured auto-negotiation function

? Full duplex operation capable

? Automatic MDI/MDI-X cross over correction

? Register-programmable transmit amplitude

? Automatic polarity correction during autonegotiation and 10BASE-T signal reception

? Power-saving and power-down modes including transmitter disable

? 2 Programmable LED indicators (Link and Activity by default)

? User programmable Interrupt pin

? Packages: 32-QFN (5x5 mm) and 32-TQFN (5x5mm)

? Low Power (~290mW)

? Single 3.3 V r0.3V Supply

? 78Q2123 rated for 0°C to 70°C operation

? 78Q2133 rated for -40°C to 85°C operation

  Specifications

Actual product photos

Product Data Book：

For more product information, please download the PDF

Payment&Transportation

Official Certificate&Certificate

Multiple product supply

Company office environment

Warehouse Real Shot

Standard packaging

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