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LTC1385 Datasheet(PDF) 3 Page - Linear Technology |
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LTC1385 Datasheet(HTML) 3 Page - Linear Technology |
3 / 8 page 3 LTC1384 1384fa DC ELECTRICAL CHARACTERISTICS AC CHARACTERISTICS Note 1: Absolute Maximum Ratings are those values beyond which the life of the device may be impaired. Note 2: Supply current is measured with driver and receiver outputs unloaded. Note 3: Measurements made in the Shutdown mode are performed with VON/OFF = 0V. PARAMETER CONDITIONS MIN TYP MAX UNITS Slew Rate RL = 3k, CL = 51pF 8 30 V/µs RL = 3k, CL = 2500pF 3 5 V/µs Driver Propagation Delay tHLD (Figure 1) ● 2 3.5 µs (TTL to RS232) tLHD (Figure 1) ● 2 3.5 µs Receiver Propagation Delay tHLR (Figure 2) ● 0.3 0.8 µs (RS232 to TTL) tLHR (Figure 2) ● 0.3 0.8 µs Driver Output Voltage vs Temperature TEMPERATURE (˚C) 0 1.8 2.0 2.2 30 50 VTH VTL 1.6 1.4 10 20 40 60 70 1.2 1.0 DATA RATE (kBAUD) 0 0 5 15 20 25 100 45 10 50 25 125 75 150 175 30 35 40 VCC = 5V RL = 3k CL = 2500pF 2 DRIVERS ACTIVE Receiver Input Thresholds vs Temperature Supply Current vs Data Rate TYPICAL PERFOR A CE CHARACTERISTICS TEMPERATURE (°C) 0 –8 –6 –2 0 2 40 10 –4 20 10 50 60 30 70 4 6 8 RL = 3k VCC = 5V VCC = 4.5V OUTPUT HIGH VCC = 4.5V VCC = 5V OUTPUT LOW The ● denotes specifications which apply over the full operating temperature range. VCC = 5V, C1 = C2 = C3 = C4 = 0.1µF,unless otherwise noted. PARAMETER CONDITIONS MIN TYP MAX UNITS Output Short-Circuit Current Sinking Current, VOUT = VCC –15 – 40 mA Sourcing Current, VOUT = 0V 10 20 mA Output Leakage Current EN = VCC, 0V ≤ VOUT ≤ VCC ● 110 µA Power Supply Generator V+ Output Voltage IOUT = 0mA 8.0 V IOUT = 8mA 7.5 V V– Output Voltage IOUT = 0mA – 8.0 V IOUT = – 8mA – 7.0 V Supply Rise Time Shutdown to Turn-On 0.2 ms Power Supply VCC Supply Current No Load (Note 2), 0°C to 70°C ● 0.22 0.5 mA No Load (Note 2), –40°C to 85°C ● 0.35 1.0 mA Supply Leakage Current (VCC)Shutdown (Note 3) ● 35 50 µA Digital Input Threshold Low ● 1.4 0.8 V Digital Input Threshold High ● 2.0 1.4 V The ● denotes specifications which apply over the full operating temperature range. VCC = 5V, C1 = C2 = C3 = C4 = 0.1µF, VON/OFF = VCC, RX EN = 0V, unless otherwise noted. |
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