Dallas Semiconductor's DS315_ family, the DS3/E3 and STS-1 line interface units (LIUs), are available in single (DS3151), dual (DS3152), triple (DS3153), and quad (DS3154) versions. All four devices are packaged in a tiny, 13 mm CSBGA.
The DS315_ LIU family offers state-of-the-art receiver, transmitter, and jitter-attenuator circuitry. The receiver recovers clock and data from signals with 0 to 15 dB of signal loss (more than 305 m of cable), while the transmitter drives waveshapes onto 75 Ω coaxial cable with excellent template compliance. The jitter attenuator meets all applicable jitter standards, requires no external components, and can be mapped into either the transmit path or the receive path. Receiver features include loss-of-signal detection and a 20 dB preamplifier for monitoring applications. Transmitter features include line build-out control, transmit tri-state control, output driver monitor, and a pattern generator. Other features include B3ZS/HDB3 encoder and decoder, local and remote loopbacks, and built-in PRBS pattern generator and detector circuitry.
The DS315_ devices operate from a 3,3 V supply and have 5 V-tolerant I/Os. All four LIUs are available in a 144-pin, thermally enhanced, CSBGA package.
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