SY58028U Datasheet | Micrel Semiconductor

Micrel, Inc. ULTRA PRECISION DIFFERENTIAL CML 4:1 MUX WITH 1:2 FANOUT AND INTERNAL I/O TERMINATION Precision Edge® Precision ESd Y5g8e0®28U Features United States Patent No. RE44,134 - Selects 1 of 4 differential inputs - Provides two copies of the selected input - Guaranteed AC performance over temperature and voltage: - DC-to- > 10.7Gbps data rate throughput - < 350ps IN-to-Out tpd - < 60ps tr / tf times - Ultra low-jitter design: - < 10ps PP total jitter (clock) - < 1ps RMS random jitter - < 10ps PP deterministic jitter - < 0.7ps RMS crosstalk-induced jitter - Unique patended input design minimizes crosstalk - Accepts an input signal as low as 100m V - Unique patended input termination and VT pin accepts DC- and AC-coupled inputs (CML, LVPECL, LVDS) - Internal 50Ω output source termination - 400m V CML output swing (RL = 50Ω) - Power supply 2.5V ±5% or 3.3V ±10% - - 40°C to +85°C temperature range - Available in 32-pin (5mm × 5mm) MLF® package Precision Edge® DESCRIPTION The SY58028U is a 2.5V/3.3V precision, high-speed, 4:1 differential CML multiplexer capable of handling clocks up to 7GHz and data streams up to 10.7Gbps. In addition, a 1:2 fanout buffer provides two copies of the selected inputs. The differential input includes Micrel’s unique, 3-pin input termination architecture that allows customers to interface to any differential signal (AC- or DC-coupled) as small as 100m V without any level shifting or termination resistor networks in the signal path. The result is a clean, stub-free, low-jitter interface solution. The outputs are 50Ω source terminated CML, with extremely fast rise/fall times guaranteed to be less than 60ps. The SY58028U operates from a 2.5V ±5% supply or a 3.3V ±10% supply and is guaranteed over the full industrial temperature range...