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LTC2870IFEPBF Datasheet(PDF) 7 Page - Linear Technology |
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LTC2870IFEPBF Datasheet(HTML) 7 Page - Linear Technology |
7 / 36 page LTC2870/LTC2871 7 28701f TYPICAL PERFORMANCE CHARACTERISTICS VCC Supply Current vs RS232 Data Rate VCC Supply Current vs Supply Voltage, All Transceivers at Max Rate (LTC2871) RS485 Driver Differential Output Voltage vs Temperature RS485 Driver Propagation Delay vs Temperature RS485 Driver Skew vs Temperature RS485 Driver Short-Circuit Current vs Short-Circuit Voltage VCC Supply Current vs Supply Voltage in Shutdown Mode VCC Supply Current vs Supply Voltage in Fast Enable Mode VCC Supply Current vs RS485 Data Rate INPUT VOLTAGE (V) 3 30 25 20 15 10 5 0 4.5 5 3.5 28701 G01 5.5 4 H/F LOW H/F HIGH SUPPLY VOLTAGE (V) 3 5 4 3 2 1 4.5 5 3.5 28701 G02 5.5 4 –40°C 25°C 85°C ALL DRIVERS AND RECEIVERS DISABLED TE485 LOW DATA RATE (Mbps) 0.1 100 80 60 40 20 0 10 28701 G03 100 1 TE HIGH TE LOW VCC = 5V VCC = 3.3V ALL RS485 DRIVERS AND RECEIVERS SWITCHING. CL = 100pF ON EACH DRIVER OUTPUT. DATA RATE (kbps) 0 35 30 25 15 20 10 5 400 28701 G04 500 300 200 100 0.05nF 0.05nF 0.5nF 0.5nF 2.5nF 2.5nF VCC = 5V VCC = 3.3V ALL RS232 DRIVERS AND RECEIVERS SWITCHING. SUPPLY VOLTAGE (V) 3 120 110 100 90 80 70 4.5 5 3.5 28701 G05 5.5 4 85°C ALL DRIVERS AND RECEIVERS SWITCHING. DRIVER OUTPUTS TIED TO RECEIVER INPUTS. RS232: 0.5Mbps (CL = 500pF) RS485: 20Mbps (CL = 100pF) TE485 HIGH 25°C –40°C TEMPERATURE (°C) –50 4.5 3.5 2.5 1.5 4.0 3.0 2.0 1.0 0.5 0 50 75 –25 28701 G06 100 25 0 RL = 100Ω RL = 54Ω RL = 100Ω RL = 54Ω VCC = 5V VCC = 3.3V TEMPERATURE (°C) –50 50 40 30 20 10 0 50 75 –25 28701 G06 100 25 0 VCC = 3.3V, VL = 1.7V VCC = 5V, VL = 1.7V VCC = 3.3V, VL = 3.3V VCC = 5V, VL = 5V TEMPERATURE (°C) –50 3.0 2.5 1.5 2.0 1.0 0.5 0 50 75 –25 28701 G08 100 25 0 SHORT-CIRCUIT VOLTAGE (V) –10 150 100 0 50 –50 –100 –150 10 –5 28701 G09 15 5 0 OUTPUT LOW OUTPUT HIGH VCC = 5V VCC = 3.3V TA = 25°C, VCC = VL = 3.3V, unless otherwise noted. |
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