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MT47H32M16CC3B Datasheet(PDF) 48 Page - Micron Technology |
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MT47H32M16CC3B Datasheet(HTML) 48 Page - Micron Technology |
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48 / 133 page  Output Electrical Characteristics and Operating Conditions Table 18: Differential AC Output Parameters Parameter Symbol Min Max Units Notes AC differential cross-point voltage VOX(AC) 0.50 × VDDQ - 125 0.50 × VDDQ + 125 mV 1 AC differential voltage swing Vswing 1.0 – mV Note: 1. The typical value of VOX(AC) is expected to be about 0.5 × VDDQ of the transmitting de- vice and VOX(AC) is expected to track variations in VDDQ. VOX(AC) indicates the voltage at which differential output signals must cross. Figure 13: Differential Output Signal Levels Crossing point V OX V SSQ Vswing V DDQ V TR V CP Table 19: Output DC Current Drive Parameter Symbol Value Units Notes Output MIN source DC current IOH –13.4 mA 1, 2, 4 Output MIN sink DC current IOL 13.4 mA 2, 3, 4 Notes: 1. For IOH(DC); VDDQ = 1.7V, VOUT = 1,420mV. (VOUT - VDDQ)/IOH must be less than 21Ω for val- ues of VOUT between VDDQ and VDDQ - 280mV. 2. For IOL(DC); VDDQ = 1.7V, VOUT = 280mV. VOUT/IOL must be less than 21Ω for values of VOUT between 0V and 280mV. 3. The DC value of VREF applied to the receiving device is set to VTT. 4. The values of IOH(DC) and IOL(DC) are based on the conditions given in Notes 1 and 2. They are used to test device drive current capability to ensure VIH,min plus a noise margin and VIL,max minus a noise margin are delivered to an SSTL_18 receiver. The actual current val- ues are derived by shifting the desired driver operating point (see output IV curves) along a 21 Ω load line to define a convenient driver current for measurement. 512Mb: x4, x8, x16 DDR2 SDRAM Output Electrical Characteristics and Operating Conditions PDF: 09005aef82f1e6e2 512MbDDR2.pdf - Rev. T 2/12 EN 48 Micron Technology, Inc. reserves the right to change products or specifications without notice. 2004 Micron Technology, Inc. All rights reserved. |
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