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LFEC20 Datasheet(PDF) 45 Page - Lattice Semiconductor |
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LFEC20 Datasheet(HTML) 45 Page - Lattice Semiconductor |
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45 / 163 page  3-9 DC and Switching Characteristics Lattice Semiconductor LatticeECP/EC Family Data Sheet BLVDS The LatticeECP/EC devices support BLVDS standard. This standard is emulated using complementary LVCMOS outputs in conjunction with a parallel external resistor across the driver outputs. BLVDS is intended for use when multi-drop and bi-directional multi-point differential signaling is required. The scheme shown in Figure 3-2 is one possible solution for bi-directional multi-point differential signals. Figure 3-2. BLVDS Multi-point Output Example Table 3-2. BLVDS DC Conditions 1 Over Recommended Operating Conditions Typical Parameter Description Zo = 45 Zo = 90 Units ZOUT Output impedance 100 100 ohm RTLEFT Left end termination 45 90 ohm RTRIGHT Right end termination 45 90 ohm VOH Output high voltage 1.375 1.48 V VOL Output low voltage 1.125 1.02 V VOD Output differential voltage 0.25 0.46 V VCM Output common mode voltage 1.25 1.25 V IDC DC output current 11.2 10.2 mA 1. For input buffer, see LVDS table. Heavily loaded backplane, effective Zo ~ 45 to 90 ohms differential 2.5V 80 80 80 80 80 80 45-90 ohms 45-90 ohms 80 2.5V 2.5V 2.5V 2.5V 2.5V 2.5V 2.5V + - . . . - . . . + - - |
Similar Part No. - LFEC20 |
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Similar Description - LFEC20 |
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