DS3251/DS3252/DS3253/DS3254 Single/Dual/Triple/Quad DS3/E3/STS-1 LIUs www.
maxim-ic.
com GENERAL DESCRIPTION The DS3251 (single), DS3252 (dual), DS3253 (triple), and DS3254 (quad) line interface units (LIUs) perform the functions necessary for interfacing at the physical layer to DS3, E3, or STS-1 lines.
Each LIU has independent receive and transmit paths and a built-in jitter attenuator.
An on-chip clock adapter generates all line-rate clocks from a single input clock.
Control interface options include 8-bit parallel, SPI, and hardware mode.
FEATURES § § § § § § § § Pin-Compatible Family of Products Each Port Independently Configurable Receive Clock and Data Recovery for Up to 380 meters (D...

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