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CDCV855PWR Scheda tecnica(PDF) 2 Page - Texas Instruments |
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CDCV855PWR Scheda tecnica(HTML) 2 Page - Texas Instruments |
2 / 15 page CDCV855, CDCV855I 2.5-V PHASE-LOCK LOOP CLOCK DRIVER SCAS660A – SEPTEMBER 2001 – REVISED DECEMBER 2002 2 POST OFFICE BOX 655303 • DALLAS, TEXAS 75265 FUNCTION TABLE (Select Functions) INPUTS OUTPUTS PLL AVDD PWRDWN CLK CLK Y[0:3] Y[0:3] FBOUT FBOUT GND H L H L H L H Bypassed/Off GND H H L H L H L Bypassed/Off X L L H Z Z Z Z Off X L H L Z Z Z Z Off 2.5 V (nom) H L H L H L H On 2.5 V (nom) H H L H L H L On 2.5 V (nom) X <20 MHz{ <20 MHz{ Z Z Z Z Off † Typically 10 MHz functional block diagram 27 Y3 26 16 Y2 17 13 Y1 12 Y0 3 2 20 FBOUT 19 Powerdown and Test Logic 9 24 6 23 7 22 PLL PWRDWN AVDD CLK CLK FBIN FBIN FBOUT Y3 Y2 Y1 Y0 Terminal Functions TERMINAL I/O DESCRIPTION NAME NO. I/O DESCRIPTION AGND 10 Ground for 2.5-V analog supply AVDD 9 2.5-V analog supply CLK, CLK 6, 7 I Differential clock input FBIN, FBIN 23, 22 I Feedback differential clock input FBOUT, FBOUT 19, 20 O Feedback differential clock output GND 1, 5, 14, 15, 28 Ground PWRDWN 24 I Control input to turn device in the power-down mode VDDQ 4, 8, 11, 18, 21, 25 2.5-V supply Y[0:3] 3, 12, 17, 26 O Buffered output copies of input clock, CLK Y[0:3] 2, 13, 16, 27 O Buffered output copies of input clock, CLK |
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