TLK1221RHAR

The Texas Instruments TLK1221RHAR is an active Gigabit Ethernet SerDes chip designed for high-speed, full-duplex point-to-point data transmissions. It operates within an industrial temperature range of -40°C to 85°C and supports data rates from 0.6 Gbps through 1.3 Gbps, compliant with IEEE 802.3 Gigabit Ethernet specifications.

This device features low power consumption, typically 250 mW at 1.25 Gbps, and utilizes LVPECL-compatible differential I/O on its high-speed interface. It incorporates a single monolithic PLL design and supports a 10-bit interface with fast relock times of less than 256 ns. The TLK1221 is suitable for EPON/GEPON applications, including OLT and ONU systems, and offers receiver differential-input thresholds of 200-mV minimum.

Built using 0.25 µm CMOS technology, the TLK1221 requires no external filter capacitors. It operates on a 2.5-V supply voltage for lowest power consumption and features 3.3-V tolerant LVTTL inputs with hot-plug protection. The component is housed in a 40-pin, 6 mm × 6 mm QFN PowerPAD™ package, making it suitable for compact designs.