TLK2201BIRCPG4 [Texas Instruments]

These devices are based on the timing requirements of the 10-bit interface specification by the IEEE 802.3 Gigabit Ethernet specification. The TLK2201B supports data rates from 1.0Gbps through 1.6Gbps and the TLK2201BI supports data rates from 1.2Gbps through 1.6Gbps. The primary application is to provide building blocks for point-to-point baseband data transmission over controlled impedance media of 50 Ω or 75 Ω. The transmission media can be printed-circuit board traces, copper cables or fiber-optical media. The devices perform data serialization, deserialization, and clock extraction functions. They support both the defined 10-bit interface (TBI) and a reduced 5-bit interface utilizing double data rate (DDR) clocking. They provide a comprehensive series of built-in tests for self-test purposes including loopback and pseudorandom binary sequence (PRBS) generation and verification. An IEEE 1149.1 JTAG port is also supported. The devices are housed in a high performance, thermally enhanced, 64-pin VQFP PowerPAD package. The TLK2201B is characterized for operation from 0°C to 70°C and the TLK2201BI from –40°C to 85°C. They use a 2.5-V supply and the I/O section is 3.3-V compatible. Power dissipation is less than 200mW typical at 1.25Gbps. The devices are hot plug capable.