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LTC2871IUHFPBF Datasheet(PDF) 5 Page - Linear Technology |
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LTC2871IUHFPBF Datasheet(HTML) 5 Page - Linear Technology |
5 / 36 page LTC2870/LTC2871 5 28701f ELECTRICAL CHARACTERISTICS The l denotes the specifications which apply over the full operating temperature range, otherwise specifications are at TA = 25°C. VCC = VL = 3.3V, TE485 = 0V, LB = 0V unless otherwise noted. SYMBOL PARAMETER CONDITIONS MIN TYP MAX UNITS RTERM Terminating Resistor TE485 = VL, A – B = 2V, B = –7V, 0V, 10V (Figure 8) (Note 5) l 108 120 156 Ω RS232 Driver VOLD Output Low Voltage RL = 3kΩ; VEE ≤ –5.9V l –5 –5.7 –7.5 V VOHD Output High Voltage RL = 3kΩ; VDD ≥ 6.5V l 5 6.2 7.5 V Three-State (High Impedance) Output Current Y or Z (LTC2870) = ±15V RS232 Receiver Enabled DOUT1 or DOUT2 (LTC2871) = ±15V l l ±156 ±10 μA μA Output Short-Circuit Current Driver Output = 0V l ±35 ±90 mA RS232 Receiver Input Threshold Voltage l 0.6 1.5 2.5 V Input Hysteresis l 0.1 0.4 1.0 V Output Low Voltage I(RA, RB, ROUT1, ROUT2) = 1mA (Sinking) 1.7V ≤ VL ≤ 5.5V l 0.4 V Output High Voltage I(RA, RB, ROUT1, ROUT2) = –1mA (Sourcing) 1.7V ≤ VL ≤ 5.5V l VL – 0.4 V Input Resistance –15V ≤ (A, B, RIN1, RIN2) ≤ 15V, RS232 Receiver Enabled l 35 7 kΩ Three-State (High Impedance) Output Current 0V ≤ (RA, RB, ROUT1, ROUT2) ≤ VL l 0±5 μA Output Short-Circuit Current VL = 5.5V 0V ≤ (RA, RB, ROUT1, ROUT2) ≤ VL l ±25 ±50 mA Logic Inputs Threshold Voltage l 0.4 0.75 • VL V Input Current l 0±5 μA Power Supply Generator VDD Regulated VDD Output Voltage RS232 Drivers Enabled, Outputs Loaded with RL = 3kΩ to GND, DIN1/DY = VL, DIN2/DZ = 0V (Note 3) 7V VEE Regulated VEE Output Voltage –6.3 V ESD LTC2870 Interface Pins (A, B, Y, Z) Human Body Model to GND or VCC, Powered or Unpowered (Note 7) ±26 kV LTC2871 Interface Pins (A, B, Y, Z, RIN1, RIN2, DOUT1, DOUT2) ±16 kV All Other Pins Human Body Model (Note 7) ±4 kV |
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