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поискавой системы для электроныых деталей |
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поискавой системы для электроныых деталей |
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LCMXO2-640ZE-3TG100C датащи(PDF) 51 Page - Lattice Semiconductor |
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LCMXO2-640ZE-3TG100C датащи(HTML) 51 Page - Lattice Semiconductor |
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51 / 106 page  3-12 DC and Switching Characteristics MachXO2 Family Data Sheet LVPECL The MachXO2 family supports the differential LVPECL standard through emulation. This output standard is emu- lated using complementary LVCMOS outputs in conjunction with resistors across the driver outputs on all the devices. The LVPECL input standard is supported by the LVDS differential input buffer. The scheme shown in Dif- ferential LVPECL is one possible solution for point-to-point signals. Figure 3-3. Differential LVPECL Table 3-3. LVPECL DC Conditions 1 Over Recommended Operating Conditions For further information on LVPECL, BLVDS and other differential interfaces please see details of additional techni- cal documentation at the end of the data sheet. Symbol Description Nominal Units ZOUT Output impedance 10 Ohms RS Driver series resistor 93 Ohms RP Driver parallel resistor 196 Ohms RT Receiver termination 100 Ohms VOH Output high voltage 2.05 V VOL Output low voltage 1.25 V VOD Output differential voltage 0.80 V VCM Output common mode voltage 1.65 V ZBACK Back impedance 100.5 Ohms IDC DC output current 12.11 mA 1. For input buffer, see LVDS table. Transmission line, Zo = 100 ohm differential 100 ohms 93 ohms 16mA 16mA 93 ohms Off-chip On-chip VCCIO = 3.3V VCCIO = 3.3V + - 196 ohms On-chip Off-chip |
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