SY89841U Datasheet | Micrel Semiconductor

Precision LVDS Runt Pulse Eliminator 2:1 Multiplexer General Description The SY89841U is a low jitter LVDS, 2:1 input multiplexer (MUX) optimized for redundant source switchover applications. Unlike standard multiplexers, the SY89841U unique 2:1 Runt Pulse Eliminator (RPE) MUX prevents any short cycles or “runt” pulses during switchover. In addition, a unique Fail-safe Input protection prevents metastable conditions when the selected input clock fails to a DC voltage (voltage between the pins of the differential input drops below 100m V). Precision Edge® Features - Selects between two sources, and provides a glitch-free, stable LVDS output - Guaranteed AC performance over temperature and supply voltage: - wide operating frequency: 1k Hz to >1.5GHz - <870ps In-to-Out tpd - <150ps tr/tf The differential input includes Micrel’s unique, 3-pin - Unique patent-pending input isolation design input termination architecture that allows customers minimizes crosstalk to interface to any differential signal (AC- or DC- Fail-safe input prevents oscillations coupled) as small as 100m V (200m Vpp) without any level shifting or termination resistor networks in the - Ultra-low jitter design: signal path. The outputs are 350m V, LVDS with fast - <1psrms random jitter rise/fall times guaranteed to be less than 150ps. - <1psrms cycle-to-cycle jitter - <10pspp total jitter (clock) The SY89841U operates from a 2.5V ±5% supply .. - <0.7psrms MUX crosstalk induced jitter and is guaranteed over the full industrial temperature range of - 40°C to +85°C. The - Unique patent-pending input termination and VT SY89841U is part of Micrel’s high-speed, Precision pin accepts DC-coupled and AC-coupled inputs Edge® product line. All support documentation can (CML, PECL, LVDS) be found on Micrel’s web site at: .micrel.. - 350m V LVDS output swing - 2.5V +5% power supply - - 40°C to +85°C industrial temperature range - Available in 16-pin (3mm x 3mm) MLF™ package Applications...