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LCMXO640LUTSC-3M100C 数据表(PDF) 34 Page - Lattice Semiconductor |
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LCMXO640LUTSC-3M100C 数据表(HTML) 34 Page - Lattice Semiconductor |
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34 / 95 page  3-8 DC and Switching Characteristics Lattice Semiconductor MachXO Family Data Sheet sysIO Differential Electrical Characteristics LVDS Over Recommended Operating Conditions LVDS Emulation MachXO devices can support LVDS outputs via emulation (LVDS25E), in addition to the LVDS support that is avail- able on-chip on certain devices. The output is emulated using complementary LVCMOS outputs in conjunction with resistors across the driver outputs on all devices. The scheme shown in Figure 3-1 is one possible solution for LVDS standard implementation. Resistor values in Figure 3-1 are industry standard values for 1% resistors. Figure 3-1. LVDS Using External Resistors (LVDS25E) The LVDS differential input buffers are available on certain devices in the MachXO family. Parameter Symbol Parameter Description Test Conditions Min. Typ. Max. Units VINP, VINM Input Voltage 0 — 2.4 V VTHD Differential Input Threshold +/-100 — — mV VCM Input Common Mode Voltage 100mV ≤ VTHD VTHD/2 1.2 1.8 V 200mV ≤ VTHD VTHD/2 1.2 1.9 V 350mV ≤ VTHD VTHD/2 1.2 2.0 V IIN Input current Power on — — +/-10 µA VOH Output high voltage for VOP or VOM RT = 100 Ohm — 1.38 1.60 V VOL Output low voltage for VOP or VOM RT = 100 Ohm 0.9V 1.03 — V VOD Output voltage differential (VOP - VOM), RT = 100 Ohm 250 350 450 mV ΔVOD Change in VOD between high and low — — 50 mV VOS Output voltage offset (VOP - VOM)/2, RT = 100 Ohm 1.125 1.25 1.375 V ΔVOS Change in VOS between H and L — — 50 mV IOSD Output short circuit current VOD = 0V Driver outputs shorted —— 6 mA 158 158 Zo = 100 140 100 On-chip On-chip Off-chip Off-chip VCCIO = 2.5 8mA 8mA Note: All resistors are ±1%. VCCIO = 2.5 + - Emulated LVDS Buffer |
类似零件编号 - LCMXO640LUTSC-3M100C |
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类似说明 - LCMXO640LUTSC-3M100C |
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