DP83849C PHYTER® DUAL is a dual port 10/100 Mb/s Ethernet physical layer transceiver from National Semiconductor Corporation for commercial temperature applications
The DP83849C is a dual‑port 10/100 Mb/s Ethernet physical layer transceiver designed by National Semiconductor for commercial and industrial use, offering independent ports and support for MII, RMII, and SNI interfaces.
The document provides a functional block diagram, pin descriptions, configuration registers, electrical specifications, timing parameters, and design guidelines for implementing the PHY in Ethernet systems.
| Supply Voltage (VCC) | -0.5 V to 4.2 V |
|---|---|
| Power Dissipation (PD) | 594 mW |
| Theta Junction to Case (Tjc) | 17.3 °C/W |
| Maximum Case Temperature @ 1.0 W | 98 °C |
| Package | 80‑pin TQFP (12 mm × 12 mm) |
It supports MII, RMII, and SNI interfaces for flexible MPU selection.
The device has low‑power consumption, typically less than 600 mW.
It includes TDR‑based cable diagnostics, cable length detection, and a link quality monitor.
The PHY is offered in an 80‑pin TQFP package measuring 12 mm by 12 mm.