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LTC2873 データシート(PDF) 3 Page - Analog Devices |
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LTC2873 データシート(HTML) 3 Page - Analog Devices |
3 / 32 page LTC2873 3 REV B For more information www.analog.com 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 = VL, LB = 0V unless otherwise noted. (Notes 2, 6) SYMBOL PARAMETER CONDITIONS MIN TYP MAX UNITS Supplies VCC Supply Voltage Operating Range l 3 5.5 V VL Logic Supply Voltage Operating Range VL ≤ VCC l 1.7 VCC V VCC Supply Current in Shutdown Mode SHDN = 0V l 8 30 µA VCC Supply Current in RS232 Mode or RS485 Mode, Driver and Receiver Enabled, Termination Disabled No Load, SHDN = TE485 = DE485/F232 = VL RE485 = 0 l 4 9 mA VCC Supply Current in RS485 Mode with Receiver and Termination Enabled, Driver Disabled No Load, SHDN = 485/232 = VL DE485/F232 = RE485 = TE485 = 0 l 4 9 mA VL Supply Current in Any Mode No Load l 0 5 µA Power Supply Generator VDD Regulated VDD Output Voltage SHDN = VL, No Load 7.0 V VEE Regulated VEE Output Voltage SHDN = VL, No Load – 6.3 V RS485 Driver |VOD| Differential Output Voltage RL = Open, VCC = 3V (Figure 1) RL = 27Ω, VCC = 4.5V (Figure 1) RL = 27Ω, VCC = 3V (Figure 1) RL = 50Ω, VCC = 3.13V (Figure 1) l l l l 2.1 1.5 2 VCC VCC VCC V V V V ∆|VOD| Difference in Magnitude of Differential Output Voltage for Complementary Output States RL = 27Ω, VCC = 3V (Figure 1) RL = 50Ω, VCC = 3.13V (Figure 1) l l 0.2 0.2 V VOC Common Mode Output Voltage RL = 27Ω or 50Ω (Figure 1) l 3 V ∆|VOC| Difference in Magnitude of Common Mode Output Voltage for Complementary Output States RL = 27Ω or 50Ω (Figure 1) l 0.2 V IOSD485 Maximum Short-Circuit Current –7V ≤ VOUT ≤ 12V (Figure 2) l ±250 mA RS485 Receiver IIN485 Input Current (A/DO, B/RI) (A/DO or B/RI) = 12V or –7V, VCC = 0V or 3.3V (Figure 3) l –100 125 µA RIN485 Input Resistance (A/DO, B/RI) (A/DO or B/RI) = 12V or –7V, VCC = 0V or 3.3V (Figure 3) 125 kΩ Differential Input Signal Threshold Voltage (A/DO to B/RI) –7V ≤ (A/DO or B/RI) ≤ 12V l ±200 mV Input Hysteresis B = 0V 220 mV Differential Input Failsafe Rising Threshold Voltage –7V ≤ (A/DO or B/RI) ≤ 12V, (A/D0 – B/RI) Rising l –200 –70 –20 mV Input DC Failsafe Hysteresis 40 mV VOL Receiver Output Low Voltage Output Low, I(RO) = 3mA (Sinking), 3V ≤ VL ≤ 5.5V l 0.4 V Output Low, I(RO) = 1mA (Sinking), 1.7V ≤ VL < 3V l 0.4 V ELECTRICAL CHARACTERISTICS |
同様の部品番号 - LTC2873 |
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同様の説明 - LTC2873 |
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