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EBE51UD8ABFA Datasheet(PDF) 13 Page - Elpida Memory |
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EBE51UD8ABFA Datasheet(HTML) 13 Page - Elpida Memory |
13 / 22 page ![]() EBE51UD8ABFA Data Sheet E0357E50 (Ver. 5.0) 13 DC Characteristics 2 (TC = 0 to +85°C, VDD, VDDQ = 1.8V ± 0.1V) (DDR2 SDRAM Component Specification) Parameter Symbol Value Unit Notes Input leakage current ILI 2 µA VDD ≥ VIN ≥ VSS Output leakage current ILO 5 µA VDDQ ≥ VOUT ≥ VSS Minimum required output pull-up under AC test load VOH VTT + 0.603 V 5 Maximum required output pull-down under AC test load VOL VTT – 0.603 V 5 Output timing measurement reference level VOTR 0.5 × VDDQ V 1 Output minimum sink DC current IOL +13.4 mA 3, 4, 5 Output minimum source DC current IOH –13.4 mA 2, 4, 5 Notes: 1. The VDDQ of the device under test is referenced. 2. VDDQ = 1.7V; VOUT = 1.42V. 3. VDDQ = 1.7V; VOUT = 0.28V. 4. The DC value of VREF applied to the receiving device is expected to be set to VTT. 5. After OCD calibration to 18 Ω at TA = 25°C, VDD = VDDQ = 1.8V. DC Characteristics 3 (TC = 0 to +85 °°°°C, VDD, VDDQ = 1.8V ±±±± 0.1V) (DDR2 SDRAM Component Specification) Parameter Symbol min. max. Unit Notes AC differential input voltage VID (AC) 0.5 VDDQ + 0.6 V 1 AC differential cross point voltage VIX (AC) 0.5 × VDDQ − 0.175 0.5 × VDDQ + 0.175 V 2 AC differential cross point voltage VOX (AC) 0.5 × VDDQ − 0.125 0.5 × VDDQ + 0.125 V 3 Notes: 1. VID(AC) specifies the input differential voltage |VTR -VCP| required for switching, where VTR is the true input signal (such as CK, DQS, LDQS or UDQS) and VCP is the complementary input signal (such as /CK, /DQS, /LDQS or /UDQS). The minimum value is equal to VIH(AC) − VIL(AC). 2. The typical value of VIX(AC) is expected to be about 0.5 × VDDQ of the transmitting device and VIX(AC) is expected to track variations in VDDQ . VIX(AC) indicates the voltage at which differential input signals must cross. 3. The typical value of VOX(AC) is expected to be about 0.5 × VDDQ of the transmitting device and VOX(AC) is expected to track variations in VDDQ . VOX(AC) indicates the voltage at which differential output signals must cross. Crossing point VSSQ VTR VCP VID VIX or VOX VDDQ Differential Signal Levels* 1, 2 |
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