Texas Instruments CDCVF855PWR
- Part Number:
- CDCVF855PWR
- Manufacturer:
- Texas Instruments
- Ventron No:
- 2976767-CDCVF855PWR
- Description:
- 2.5-V phase lock loop DDR clock driver
- Datasheet:
- cdcvf855
- FunctionZero-delay
- Additive RMS jitter (typ) (fs)65
- Output frequency (max) (MHz)220
- Number of outputs4
- Output supply voltage (V)1.7
- Core supply voltage (V)2.5
- Output skew (ps)40
- FeaturesSpread spectrum clocking (SSC)
- Operating temperature range (°C)-40 to 85
- RatingCatalog
- Output typeLVTTL
- Input typeLVTTL
The CDCVF855 is a high-performance, low-skew, low-jitter, zero-delay buffer that distributes a differential clock input pair (CLK, CLK) to 4 differential pairs of clock outputs (Y[0:3], Y[0:3]) and one differential pair of feedback clock outputs (FBOUT, FBOUT). The clock outputs are controlled by the clock inputs (CLK, CLK), the feedback clocks (FBIN, FBIN), and the analog power input (AVDD). When PWRDWN is high, the outputs switch in phase and frequency with CLK. When PWRDWN is low, all outputs are disabled to a high-impedance state (3-state) and the PLL is shut down (low-power mode). The device also enters this low-power mode when the input frequency falls below a suggested detection frequency that is below 20 MHz (typical 10 MHz). An input frequency-detection circuit detects the low-frequency condition and, after applying a >20-MHz input signal, this detection circuit turns the PLL on and enables the outputs.
When AVDD is strapped low, the PLL is turned off and bypassed for test purposes. The CDCVF855 is also able to track spread-spectrum clocking for reduced EMI.
Because the CDCVF855 is based on PLL circuitry, it requires a stabilization time to achieve phase-lock of the PLL. This stabilization time is required following power up. The CDCVF855 is characterized for both commercial and industrial temperature ranges.
2.5-V phase lock loop DDR clock driver 28-TSSOP -40 to 85
PLL Based Clock Driver, 855 Series, 4 True Output(s), 0 Inverted Output(s), PDSO28
Gold DUAL Active GULL WING PLL Clock Driver IC 6Weeks -40C~85C 3.5ns 9.7mm
Zero Delay Buffer 4-Out Differential 28-Pin TSSOP T/R
Clock Drivers & Distribution 2.5V DDR CLK DRIVER PLL
Clocking Circuits 2.5V Ph Lock Loop DDR Clock Driver
IC PLL CLOCK DVR 2.5V 28-TSSOP
IC, PLL CLOCK DRIVER, 220MHZ, TSSOP-28; Clock IC Type:PLL Clock Driver; Frequency:220MHz; No. of Outputs:5; Supply Current:140mA; Supply Voltage Range:2.3V to 2.7V; Digital IC Case Style:TSSOP; No. of Pins:28 ;RoHS Compliant: Yes
-
ImagePart NumberManufacturerFunctionAdditive RMS jitter (typ) (fs)Output frequency (max) (MHz)Number of outputsOutput supply voltage (V)Core supply voltage (V)Output skew (ps)FeaturesOperating temperature range (°C)RatingOutput typeInput typeView Compare
-
CDCVF855PWRZero-delay6522041.72.540Spread spectrum clocking (SSC)-40 to 85CatalogLVTTLLVTTL-
-
Zero-delay10020083.33.3150Spread spectrum clocking (SSC)-40 to 85CatalogLVTTLLVTTL
-
Memory interface7020043.33.3150SDR-40 to 85CatalogLVCMOSLVCMOS
-
Memory interface70175103.33.3100SDR0 to 85CatalogLVTTLLVTTL
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