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CDCVF857 Scheda tecnica(PDF) 6 Page - Texas Instruments |
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CDCVF857 Scheda tecnica(HTML) 6 Page - Texas Instruments |
6 / 19 page CDCVF857 2.5V PHASELOCK LOOP CLOCK DRIVER SCAS047D − MARCH 2003 − REVISED JUNE 2005 6 POST OFFICE BOX 655303 • DALLAS, TEXAS 75265 recommended operating conditions (see Note 5) MIN TYP MAX UNIT Supply voltage VDDQ PC1600 − PC3200 2.3 2.7 V Supply voltage AVDD VDDQ − 0.12 2.7 V Low-level input voltage, VIL CLK, CLK, FBIN, FBIN VDDQ/2 – 0.18 V Low-level input voltage, VIL PWRDWN −0.3 0.7 V High-level input voltage, VIH CLK, CLK, FBIN, FBIN VDDQ/2 + 0.18 V High-level input voltage, VIH PWRDWN 1.7 VDDQ + 0.3 V DC input signal voltage (see Note 5) –0.3 VDDQ + 0.3 V Differential input signal voltage, VID (see Note 6) dc CLK, FBIN 0.36 VDDQ + 0.6 V Differential input signal voltage, VID (see Note 6) ac CLK, FBIN 0.7 VDDQ + 0.6 V Input differential pair cross voltage, VIX (see Notes 7 and 8) VDDQ/2 – 0.2 VDDQ/2 + 0.2 V High-level output current, IOH −12 mA Low-level output current, IOL 12 mA Input slew rate, SR 1 4 V/ns Operating free-air temperature, TA −40 85 °C NOTES: 5. The unused inputs must be held high or low to prevent them from floating. 6. The dc input signal voltage specifies the allowable dc execution of the differential input. 7. The differential input signal voltage specifies the differential voltage |VTR − VCP| required for switching, where VTR is the true input level and VCP is the complementary input level. 8. The differential cross-point voltage is expected to track variations of VCC and is the voltage at which the differential signals must be crossing. electrical characteristics over recommended operating free-air temperature range (unless otherwise noted) PARAMETER TEST CONDITIONS MIN TYP† MAX UNIT VIK Input voltage All inputs VDDQ = 2.3 V, II = –18 mA –1.2 V VOH High-level output voltage VDDQ = min to max, IOH = –1 mA VDDQ – 0.1 V VOH High-level output voltage VDDQ = 2.3 V, IOH = –12 mA 1.7 V VOL Low-level output voltage VDDQ = min to max, IOL = 1 mA 0.1 V VOL Low-level output voltage VDDQ = 2.3 V, IOL = 12 mA 0.6 V VOD Output voltage swing} Differential outputs are terminated with 1.1 VDDQ – 0.4 V VOX Output differential cross-voltagew Differential outputs are terminated with 120 Ω /CL = 14 pF (See Figure 3) VDDQ/2 – 0.1 VDDQ/2 VDDQ/2 + 0.1 V II Input current VDDQ = 2.7 V, VI = 0 V to 2.7 V ±10 µA IOZ High-impedance state output current VDDQ = 2.7 V, VO= VDDQ or GND ±10 µA IDDPD Power-down current on VDDQ + AVDD CLK and CLK = 0 MHz; PWRDWN = Low; Σ of IDD and AIDD 20 100 µA AIDD Supply current on AVDD fO = 170 MHz 6 8 mA AIDD Supply current on AVDD fO = 200 MHz 8 10 mA CI Input capacitance VDDQ = 2.5 V, VI = VDDQ or GND 2 2.5 3.5 pF † All typical values are at a respective nominal VDDQ. ‡ The differential output signal voltage specifies the differential voltage VTR − VCP, where VTR is the true output level and VCP is the complementary output level. § The differential cross-point voltage is expected to track variations of VDDQ and is the voltage at which the differential signals must be crossing. |
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