Cypress Semiconductor Corp CY29946AXC

Description
The CY29946 is a lowvoltage 200MHz clock distribution buffer that can select one of two LVCMOS/LVTTLcompatible input clocks. These clock sources can be used to provide for test clocks as well as the primary system clocks. All other control inputs are LVCMOS/LVTTL compatible. The 10 outputs are LVCMOS or LVTTL compatible and can drive 50 Ω series or parallel terminated transmission lines. For series terminated transmission lines, each output can drive one or two traces giving the device an effective fanout of 1:20.
The CY29946 is capable of generating 1x and 1/2x signals from a 1x source. These signals are generated and retimed internally to ensure minimal skew between the 1x and 1/2x signals. SEL(A:C) inputs allow flexibility in selecting the ratio of 1× to 1/2 outputs.
The CY29946 outputs can also be threestated via MR/OE# input. When MR/OE# is set HIGH, it resets the internal flipflops and threestates the outputs.

Features
2.5 V or 3.3 V operation
200MHz clock support
Two LVCMOS/LVTTLcompatible inputs
Ten clock outputs: drive up to 20 clock lines
1x or 1/2x configurable outputs
Output threestate control
250ps max outputtooutput skew
Pincompatible with MPC946, MPC9446
Available in commercial and industrial temperature range
32pin TQFP package

Applications
Clock distribution in highspeed systems
Test clock generation
System clock generation
Clock buffering and fanout