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H5PS1G63JFRS6C Datasheet(PDF) 12 Page - Hynix Semiconductor |
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H5PS1G63JFRS6C Datasheet(HTML) 12 Page - Hynix Semiconductor |
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12 / 62 page  Rev. 1.7 / Nov. 2011 12 Release H5PS1G63JFR Series 3.2.4 Differential Input AC logic Level Note: 1. VIN(DC) specifies the allowable DC execution of each input of differential pair such as CK, CK, DQS, DQS, LDQS, LDQS, UDQS and UDQS. 2. VID(DC) specifies the input differential voltage |VTR -VCP | required for switching, where VTR is the true input (such as CK, DQS, LDQS or UDQS) level and VCP is the complementary input (such as CK, DQS, LDQS or UDQS) level. The minimum value is equal to VIH(DC) - V IL(DC). Note: 1. VID(AC) specifies the input differential voltage |VTR -VCP | required for switching, where VTR is the true input sig- nal (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 V IH(AC) - V IL(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. 3.2.5 Differential AC output parameters Note: 1. The typical value of VOX(AC) is expected to be about 0.5 * V DDQ 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. Symbol Parameter Min. Max. Units Notes VID (ac) ac differential input voltage 0.5 VDDQ + 0.6 V 1 VIX (ac) ac differential cross point voltage 0.5 * VDDQ - 0.175 0.5 * VDDQ + 0.175 V 2 Symbol Parameter Min. Max. Units Notes VOX (ac) ac differential cross point voltage 0.5 * VDDQ - 0.125 0.5 * VDDQ + 0.125 V 1 VDDQ Crossing point VSSQ VTR VCP VID VIX or VOX < Differential signal levels > |
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