1-to-9 PLL Clock Driver

The CDC2509C is a high-performance, low-skew, low-jitter, phase-lock loop (PLL) Clock Driver It uses a PLL to precisely align, in both frequency and phase, the feedback (FBOUT) output to the Clock (CLK) input signal. It is specifically designed for use with synchronous DRAMs The CDC2509C operates at 3.3 V VCC. It also provides integrated series-damping resistors that make it ideal for driving point-to-point loads.
One bank of five outputs and one bank of four outputs provide nine low-skew, low-jitter copies of CLK. Output signal duty cycles are adjusted to 50%, independent of the duty cycle at CLK. Each bank of outputs is enabled or disabled separately via the control (1G and 2G) inputs. When the G inputs are high, the outputs Switch in phase and frequency with CLK; when the G inputs are low, the outputs are disabled to the logic-low state.
Unlike many products containing PLLs the CDC2509C does not require external RC networks. The loop Filter for the PLL is included on-chip, minimizing component count, board space, and cost.
Because it is based on PLL circuitry, the CDC2509C requires a stabilization time to achieve phase lock of the feedback signal to the reference signal. This stabilization time is required, following power up and application of a fixed-frequency, fixed-phase signal at CLK, and following any changes to the PLL reference or feedback signals. The PLL CAN be bypassed for test purposes by strapping AVCC to ground.
The CDC2509C is characterized for operation from 0C to 85C.
For application information refer to application reports High Speed Distribution Design Techniques for CDC509 516/2509/2510/2516 (literature number SLMA003) and Using CDC2509A 2510A PLL with Spread Spectrum Clocking (SSC) (literature number SCAA039).
By Texas Instruments
Part Manufacturer Description Datasheet Samples
CDC2509CPWG4 Texas Instruments 1-to-9 PLL Clock Driver 24-TSSOP
CDC2509CPWR Texas Instruments 1-to-9 PLL Clock Driver 24-TSSOP
CDC2509CPW Texas Instruments 1-to-9 PLL Clock Driver 24-TSSOP
CDC2509CPWRG4 Texas Instruments 1-to-9 PLL Clock Driver 24-TSSOP
CDC2509C 's PackagesCDC2509C 's pdf datasheet
CDC2509CPW TSSOP
CDC2509CPWG4 TSSOP
CDC2509CPWR TSSOP
CDC2509CPWRG4 TSSOP

CDC2509C pdf datasheet download


CDC2509C Pinout, Pinouts
CDC2509C pinout,Pin out
This is one package pinout of CDC2509C,If you need more pinouts please download CDC2509C's pdf datasheet.

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