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K4C89363AF-TCFB Datasheet(PDF) 7 Page - Samsung semiconductor |
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K4C89363AF-TCFB Datasheet(HTML) 7 Page - Samsung semiconductor |
7 / 58 page K4C89363AF REV. 0.0 Nov. 2002 - 7 - 1. All voltages are referenced to Vss, VssQ. 2. V REF is expected to track variations in VddQ DC level of the transmitting device. Peak to peak AC noise on V REF may not exceed ± 2% of V REF (DC). 3. Overshoot Iimit : V IH (max.) = VddQ + 0.7V with a pulse width <= 5ns 4. Undershoot Iimit : V IL(min.) = -0.7V with a pulse width <= 5ns 5. V IH (DC) and V IL (DC) are levels to maintain the current logic state. 6. V IH (AC) and V IL(AC) are levels to change to the new logic state. 7. V ID is magnitude of the difference between CLK input level and CLK input level. 8. The value of Vx(AC) is expected to equal VddQ/2 of the transmitting device. 9. V ISO means [V ICK(CLK) + V ICK(CLK )]/2 10. Refer to the figure below. Notes : 11. In the case of external termination, VTT(Termination Voltage) should be gone in the range of V REF(DC) ±0.04V. Pin Capacitance (V DD = 2.5V, V DDQ = 1.8V, f = 1 MHz, Ta = 25 o C ) Note : These parameters are periodically sampled and not 100% tested. Symbol Parameter Min Max Delts Units C IN Input Pin Capacitance 1.5 2.5 0.25 pF C INC Clock Pin (CLK, CLK ) Capacitance 1.5 2.5 0.25 pF C I/O DQ, DS, QS Capacitance 2.5 3.5 0.5 pF C NC NC Pin Capacitance - 1.5 - pF CLK CLK V SS V ID (AC) 0 V Differential V ISO V SS V ICK V ISO (min) V X V X V X V X V ICK V ICK V ICK V ISO(max) V X V ID (AC) |
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