Cypress Semiconductor Corp CY29947AXI
- Part Number:
- CY29947AXI
- Manufacturer:
- Cypress Semiconductor Corp
- Ventron No:
- 2974182-CY29947AXI
- Description:
- IC CLK BUFFER 2:9 200MHZ 32TQFP
- Datasheet:
- CY29947AXI
Description
The CY29947 is a lowvoltage 200MHz clock distribution buffer with the capability to select one of two LVCMOS/LVTTLcompatible clock inputs. The two clock sources can be used to provide for a test clock as well as the primary system clock. All other control inputs are LVCMOS/LVTTL compatible. The 9 outputs are LVCMOS or LVTTL compatible and can drive 5002 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 1:18. The outputs can also be threestated via the threestate input TS#. Low outputtooutput skews make the CY29947 an ideal clock distribution buffer for nested clock trees in the most demanding of synchronous systems. The CY29947 also provides a synchronous output enable input for enabling or disabling the output clocks. Since this input is internally synchronized to the input clock, potential output glitching or runt pulse generation is eliminated.
Features
2.5V or 3.3V operation
200MHz clock support
LVCMOS/LVTTLcompatible inputs
9 clock outputs: drive up to 18 clock lines
Synchronous Output Enable
Output threestate control
250 ps max. outputtooutput skew
Pin compatible with MPC947, MPC9447
Applications
Clock distribution in highspeed synchronous systems
Test clock generation
Clock buffering for nested clock trees
The CY29947 is a lowvoltage 200MHz clock distribution buffer with the capability to select one of two LVCMOS/LVTTLcompatible clock inputs. The two clock sources can be used to provide for a test clock as well as the primary system clock. All other control inputs are LVCMOS/LVTTL compatible. The 9 outputs are LVCMOS or LVTTL compatible and can drive 5002 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 1:18. The outputs can also be threestated via the threestate input TS#. Low outputtooutput skews make the CY29947 an ideal clock distribution buffer for nested clock trees in the most demanding of synchronous systems. The CY29947 also provides a synchronous output enable input for enabling or disabling the output clocks. Since this input is internally synchronized to the input clock, potential output glitching or runt pulse generation is eliminated.
Features
2.5V or 3.3V operation
200MHz clock support
LVCMOS/LVTTLcompatible inputs
9 clock outputs: drive up to 18 clock lines
Synchronous Output Enable
Output threestate control
250 ps max. outputtooutput skew
Pin compatible with MPC947, MPC9447
Applications
Clock distribution in highspeed synchronous systems
Test clock generation
Clock buffering for nested clock trees
Cypress Semiconductor Corp CY29947AXI technical specifications, attributes, parameters and parts with similar specifications to Cypress Semiconductor Corp CY29947AXI.
- Factory Lead Time8 Weeks
- Contact PlatingGold, Tin
- MountSurface Mount
- Mounting TypeSurface Mount
- Package / Case32-TQFP
- Number of Pins32
- Operating Temperature-40°C~85°C
- PackagingTray
- Published1999
- JESD-609 Codee3
- Pbfree Codeyes
- Part StatusObsolete
- Moisture Sensitivity Level (MSL)3 (168 Hours)
- Number of Terminations32
- Terminal FinishMatte Tin (Sn)
- Additional FeatureCAN ALSO OPERATE AT 3.3V SUPPLY
- Voltage - Supply2.375V~3.63V
- Terminal PositionQUAD
- Terminal FormGULL WING
- Peak Reflow Temperature (Cel)260
- Number of Functions1
- Supply Voltage2.5V
- Terminal Pitch0.8mm
- Reflow Temperature-Max (s)30
- Base Part NumberCY29947
- OutputLVCMOS, LVTTL
- Pin Count32
- Number of Outputs9
- Qualification StatusNot Qualified
- Operating Supply Voltage3.3V
- Supply Voltage-Max (Vsup)2.625V
- Supply Voltage-Min (Vsup)2.375V
- Number of Circuits1
- Propagation Delay10.5 ns
- Quiescent Current7mA
- Frequency (Max)200MHz
- InputLVCMOS, LVTTL
- Ratio - Input:Output2:9
- Differential - Input:OutputYes/No
- Same Edge Skew-Max (tskwd)0.25 ns
- Duty Cycle55 %
- Length7mm
- Width7mm
- RoHS StatusROHS3 Compliant
- Lead FreeLead Free
The three parts on the right have similar specifications to CY29947AXI.
-
ImagePart NumberManufacturerFactory Lead TimeContact PlatingMountMounting TypePackage / CaseNumber of PinsOperating TemperaturePackagingPublishedJESD-609 CodePbfree CodePart StatusMoisture Sensitivity Level (MSL)Number of TerminationsTerminal FinishAdditional FeatureVoltage - SupplyTerminal PositionTerminal FormPeak Reflow Temperature (Cel)Number of FunctionsSupply VoltageTerminal PitchReflow Temperature-Max (s)Base Part NumberOutputPin CountNumber of OutputsQualification StatusOperating Supply VoltageSupply Voltage-Max (Vsup)Supply Voltage-Min (Vsup)Number of CircuitsPropagation DelayQuiescent CurrentFrequency (Max)InputRatio - Input:OutputDifferential - Input:OutputSame Edge Skew-Max (tskwd)Duty CycleLengthWidthRoHS StatusLead FreeSupplier Device PackageMax Operating TemperatureMin Operating TemperatureMax Supply VoltageMin Supply VoltageSurface MountReach Compliance CodeJESD-30 CodeFamilyPropagation Delay (tpd)View Compare
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CY29947AXI8 WeeksGold, TinSurface MountSurface Mount32-TQFP32-40°C~85°CTray1999e3yesObsolete3 (168 Hours)32Matte Tin (Sn)CAN ALSO OPERATE AT 3.3V SUPPLY2.375V~3.63VQUADGULL WING26012.5V0.8mm30CY29947LVCMOS, LVTTL329Not Qualified3.3V2.625V2.375V110.5 ns7mA200MHzLVCMOS, LVTTL2:9Yes/No0.25 ns55 %7mm7mmROHS3 CompliantLead Free-----------
-
--Surface MountSurface Mount32-LQFP320°C~70°CTape & Reel (TR)2006--Obsolete3 (168 Hours)---2.375V~3.465V-------CY29940LVCMOS, LVTTL------1--200MHzLVCMOS, LVPECL, LVTTL1:18Yes/No----ROHS3 CompliantLead Free32-TQFP (7x7)70°C0°C3.465V2.375V-----
-
---Surface Mount32-LQFP-0°C~70°CTape & Reel (TR)---Obsolete3 (168 Hours)---2.375V~3.465V--------LVCMOS, LVTTL------1--200MHzLVCMOS, LVPECL, LVTTL1:18Yes/No----ROHS3 Compliant-32-TQFP (7x7)---------
-
---Surface Mount32-LQFP--40°C~85°CTube-e0noObsolete3 (168 Hours)32TIN LEADALSO OPERATES AT 3.3V SUPPLY2.375V~3.465VQUADGULL WINGNOT SPECIFIED12.5V0.8mmNOT SPECIFIED-LVCMOS, LVTTL32-COMMERCIAL-2.625V2.375V1--200MHzLVCMOS, LVPECL, LVTTL1:18Yes/No0.2 ns-7mm7mmNon-RoHS Compliant------YESunknownS-PQFP-G32299405.2 ns
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