B9947, B9947CA, B9948 Selling Leads, Datasheet
MFG:CYPRESS Package Cooled:N/A D/C:09+
B9947, B9947CA, B9948 Datasheet download
Part Number: B9947
MFG: CYPRESS
Package Cooled: N/A
D/C: 09+
B9947, B9947CA, B9948
- Table of contents:
Info of B9947
Info of B9947CA
Info of B9948
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About B9947
PDF/DataSheet Download
Datasheet: B9947
File Size: 59329 KB
Manufacturer: CYPRESS [Cypress Semiconductor]
Download : Click here to Download
About B9947CA
PDF/DataSheet Download
Datasheet: B9947CA
File Size: 59329 KB
Manufacturer: CYPRESS [Cypress Semiconductor]
Download : Click here to Download
About B9948
PDF/DataSheet Download
Datasheet: B9948
File Size: 102826 KB
Manufacturer: CYPRESS [Cypress Semiconductor]
Download : Click here to Download
B9947 General Description
The B9947 is a low-voltage clock distribution buffer with the capability to select one of two LVCMOS/LVTTL compatible clock inputs. The two clock sources can be used to provide for a test clock as well as the primary system clock. All other con-trol inputs are LVCMOS/LVTTL compatible. The nine outputs are 3.3V LVCMOS or LVTTL compatible and can drive two series terminated 50Ω transmission lines. With this capability the B9947 has an effective fanout of 1:18. The outputs can also be three-stated via the three-state input TS#. Low out- put-to-output skews make the B9947 an ideal clock distribu- tion buffer for nested clock trees in the most demanding of synchronous systems.
The B9947 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.
The B9947 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.
B9947 Maximum Ratings
Maximum Input Voltage Relative to VSS: ............ VSS 0.3V
Maximum Input Voltage Relative to VDD: .............VDD + 0.3V
Storage Temperature: ...........................65°C to + 150°C
Operating Temperature: ...........................40°C to +85°C
Maximum ESD protection .................................................2 KV
Maximum Power Supply: ..................................................5.5V
Maximum Input Current:.............................................±20 mA
Maximum Input Voltage Relative to VDD: .............VDD + 0.3V
Storage Temperature: ...........................65°C to + 150°C
Operating Temperature: ...........................40°C to +85°C
Maximum ESD protection .................................................2 KV
Maximum Power Supply: ..................................................5.5V
Maximum Input Current:.............................................±20 mA
B9947 Features
• 160-MHz Clock Support
• LVCMOS/LVTTL Compatible Inputs
• 9 Clock Outputs: Drive up to 18 Clock Lines
• Synchronous Output Enable
• Output Three-state Control
• 350-ps Maximum Output-to-Output Skew
• Pin Compatible with MPC947
• Industrial Temp. Range: 40°C to +85°C
• 32-Pin TQFP Package
• LVCMOS/LVTTL Compatible Inputs
• 9 Clock Outputs: Drive up to 18 Clock Lines
• Synchronous Output Enable
• Output Three-state Control
• 350-ps Maximum Output-to-Output Skew
• Pin Compatible with MPC947
• Industrial Temp. Range: 40°C to +85°C
• 32-Pin TQFP Package
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