Ethernet PHY with dual-MAC interface
The DP83822HFRHBR is a single-port 10/100 Mb/s Ethernet physical layer transceiver from Texas Instruments, supporting both MII and RMII MAC interfaces. The dual-interface option means the same PHY can connect to an MCU with either a 4-bit MII bus (25 MHz clock) or a 2-bit RMII bus (50 MHz clock), simplifying BOM consolidation across board variants.
Active lifecycle and compliance posture
Because the lifecycle stage is current, no last-time-buy or PCN watch is triggered. For new designs, this PHY is a low-risk selection — no imminent obsolescence to plan around.
32-VQFN package and board integration
Housed in a 32-VFQFN with exposed pad (5x5 mm body), the DP83822HFRHBR requires a thermal land pattern under the package to conduct heat to the PCB ground plane. The 5x5 VQFN footprint is a common industry standard, so the layout matches many other TI PHYs and Ethernet controllers. Surface-mount assembly with the exposed pad means the solder paste stencil aperture for the center pad should be designed to avoid voids — a 50-60% coverage pattern is typical for QFN thermal pads. The package is supplied in Tape & Reel (TR) or Cut Tape (CT) options, covering both volume production and prototype quantities.