3.2 Gbps single driver for high-speed serial links
The MAX3800UHJ+ is a single-channel driver from Analog Devices, designed for 3.2 Gbps serial data transmission over controlled-impedance board traces or short cables. A single driver with no integrated receiver — the 1/0 driver/receiver count means this is a unidirectional transmit-side part, not a transceiver. It operates from a tight 3.14 V to 3.46 V supply rail, typical of high-speed CML (current-mode logic) output stages that need a regulated 3.3 V ±5 % to maintain signal integrity at multi-gigabit rates. The 0°C to 85°C commercial temperature range covers indoor equipment and most controlled-environment networking gear.
Package and thermal management
Housed in a 32-TQFP with an exposed pad (EP) — the 5x5 mm body (32-TQFP-EP (5x5)) provides a low-inductance ground plane connection through the central paddle. Supplied in tray packaging, which is standard for high-speed ICs that are often hand-placed during prototype or low-volume assembly. The surface-mount footprint suits reflow soldering with a typical lead-free profile.
No pin-compatible second-source or direct replacement is recorded — this is a single-sourced part, so securing stock for the production run is the procurement priority.