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CDCVF857DGG Arkusz danych(PDF) 6 Page - Texas Instruments |
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CDCVF857DGG Arkusz danych(HTML) 6 Page - Texas Instruments |
6 / 22 page www.ti.com RECOMMENDED OPERATING CONDITIONS ELECTRICAL CHARACTERISTICS CDCVF857 SCAS047F – MARCH 2003 – REVISED MAY 2007 MIN NOM MAX UNIT VDDQ PC1600 – PC3200 2.3 2.7 Supply voltage V AVDD VDDQ – 0.12 2.7 CLK, CLK, FBIN, FBIN VDDQ/2 – 0.18 VIL Low-level input voltage V PWRDWN –0.3 0.7 CLK, CLK, FBIN, FBIN VDDQ/2 + 0.18 VIH High-level input voltage V PWRDWN 1.7 VDDQ + 0.3 DC input signal voltage (1) –0.3 VDDQ + 0.3 V DC CLK, FBIN 0.36 VDDQ + 0.6 VID Differential input signal voltage (2) V AC CLK, FBIN 0.7 VDDQ + 0.6 VIX Input differential pair cross voltage (3)(4) VDDQ/2 – 0.2 VDDQ/2 + 0.2 V IOH High-level output current –12 mA IOL Low-level output current 12 mA SR Input slew rate 1 4 V/ns TA Operating free-air temperature –40 85 °C (1) The unused inputs must be held high or low to prevent them from floating. (2) The dc input signal voltage specifies the allowable dc execution of the differential input. (3) 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. (4) The differential cross-point voltage tracks variations of VCC and is the voltage at which the differential signals must cross. over recommended operating free-air temperature range (unless otherwise noted) PARAMETER TEST CONDITIONS MIN TYP (1) MAX UNIT VIK Input voltage, all inputs VDDQ = 2.3 V, II = –18 mA –1.2 V VDDQ = min to max, IOH = –1 mA VDDQ – 0.1 VOH High-level output voltage V VDDQ = 2.3 V, IOH = –12 mA 1.7 VDDQ = min to max, IOL = 1 mA 0.1 VOL Low-level output voltage V VDDQ = 2.3 V, IOL = 12 mA 0.6 VOD Output voltage swing (2) 1.1 VDDQ – 0.4 V Differential outputs are terminated with Output differential 120 Ω, C L = 14 pF (see Figure 3) VOX VDDQ/2 – 0.1 VDDQ/2 VDDQ/2 + 0.1 V cross-voltage (3) II Input current VDDQ = 2.7 V, VI = 0 V to 2.7 V ±10 µA High-impedance-state output IOZ VDDQ = 2.7 V, VO = VDDQ or GND ±10 µA current Power-down current on VDDQ CLK and CLK = 0 MHz; PWRDWN = IDDPD 20 100 µA + AVDD Low; Σ of I DD and AIDD fO = 170 MHz 6 8 AIDD Supply current on AVDD mA fO = 200 MHz 8 10 CI Input capacitance VDDQ = 2.5 V, VI = VDDQ or GND 2 2.5 3.5 pF fO = 170 MHz 120 140 Without load fO = 200 MHz 125 150 Differential outputs fO = 170 MHz 220 270 terminated with 120 Ω, C L IDD Dynamic current on VDDQ mA fO = 200 MHz 230 280 = 0 pF Differential outputs fO = 170 MHz 280 330 terminated with 120 Ω, C L fO = 200 MHz 300 350 = 14 pF (1) All typical values are at nominal VDDQ. (2) 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. (3) The differential cross-point voltage tracks variations of VDDQ and is the voltage at which the differential signals must cross. 6 Submit Documentation Feedback |
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