Functional Description

The CY7B9945V high speed multi-phase PLL clock buffer offers user selectable control over system clock functions. This multiple output clock driver provides the system integrator with functions necessary to optimize the timing of high performance computer and communication systems.

Features

■ 500 ps max Total Timing Budget™ (TTB™) window

■ 24–200 MHz input and output operation

■ Low output-output skew < 200 ps

■ 10 + 1 LVTTL outputs driving 50W terminated lines

■ Dedicated feedback output

■ Phase adjustments in 625/1300 ps steps up to +10.4 ns

■ 3.3V LVTTL/LVPECL, fault tolerant, and hot insertable reference inputs

■ Multiply or divide ratios of 1–6, 8, 10, and 12

■ Individual output bank disable

■ Output high impedance option for testing purposes

■ Integrated phase locked loop (PLL) with lock indicator

■ Low cycle-cycle jitter (<100 ps peak-peak)

■ 3.3V operation

■ Industrial temperature range: –40°C to +85°C

■ 52-pin 1.4 mm TQFP package