Telecom PHY in an 80-pin LQFP
The 82V2042EPFG is a Line Interface Unit (LIU) — the analog front-end that connects a T1//J1 framer or controller to the twisted-pair line. It is not a microcontroller; it is the PHY layer that handles line equalisation, clock recovery, and jitter attenuation for 1.544 / 2.048 Mbps links. Housed in an 80-lead LQFP (14×14 mm body, 0.65 mm pitch), the part is a surface-mount device supplied in tray format — no tape-and-reel, so plan for pick-and-place with a tray feeder or manual placement for prototype runs.
Supply rail and temperature grade
The core supply is a tight 3.13 V to 3.47 V window — a clean 3.3 V rail with ±5 % regulation covers it. A switching regulator feeding this rail needs low ripple; a linear post-regulator is safer if the board already has a 3.3 V LDO. The 80-TQFP package's thermal impedance is manageable at the LIU's typical power dissipation — no heatsink needed for line-side duty.
Active production, no obsolescence watch
Renesas lists the 82V2042EPFG as Active. ROHS3 compliant — no exemption-based restrictions for EU or global shipments. The tray packaging keeps the leads protected during storage;.