Clock Rate Adapters

Dallas Semiconductor has introduced the DS21600 series of clock rate adapters, integrated circuits for converting signal frequencies between E- and T-carrier clock rates without external components.

The devices are designed to be pin- and software-compatible with Level One's discontinued LXP600ASE, LXP602SE, LXP604SE and LXP610SE CLock ADapter (CLAD) products.

Different frequencies are used for data transmission in different enterprise networks around the world. T1 in North America transmits at a rate of 1.544 Mbps, while E1, the European protocol, transmits at the rate of 2.048 Mbps.

The two rates converge in several kinds of access equipment, including add/drop multiplexers, DSL access multiplexers, channel service units, channel banks, routers, switches and other related equipment.