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LTC2858IDD-2 Datasheet(PDF) 4 Page - Linear Technology |
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LTC2858IDD-2 Datasheet(HTML) 4 Page - Linear Technology |
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4 / 20 page  LTC2856-1/LTC2856-2 LTC2857-1/LTC2857-2 LTC2858-1/LTC2858-2 4 285678fe ELECTRICAL CHARACTERISTICS SYMBOL PARAMETER CONDITIONS MIN TYP MAX UNITS Driver |VOD| Differential Driver Output Voltage R = ∞, VCC = 4.5V (Figure 1) ● VCC V R = 27 Ω (RS485), VCC = 4.5V (Figure 1) ● 1.5 VCC V R = 50 Ω (RS422), VCC = 4.5V (Figure 1) ● 2VCC V Δ|VOD| Change in Magnitude of Driver Differential Output Voltage for Complementary Output States R = 27 Ω or R = 50Ω (Figure 1) ● 0.2 V VOC Driver Common Mode Output Voltage R = 27 Ω or R = 50Ω (Figure 1) ● 3V Δ|VOC| Change in Magnitude of Driver Common Mode Output Voltage for Complementary Output States R = 27 Ω or R = 50Ω (Figure 1) ● 0.2 V IOZD Driver Three-State (High Impedance) Output Current on Y and Z DE = 0V, (Y or Z) = –7V, 12V, LTC2858-1, LTC2858-2 ● ±10 μA IOSD Maximum Driver Short-Circuit Current –7V ≤ (Y or Z) ≤ 12V (Figure 2) ● ±120 ±250 mA Receiver IIN Receiver Input Current (A, B) DE = TE = 0V, VCC = 0V or 5V, VIN = 12V (Figure 3) (C, I-Grade) DE = TE = 0V, VCC = 0V or 5V, VIN = –7V, (Figure 3) (C, I-Grade) ● ● –100 125 μA μA DE = TE = 0V, VCC = 0V or 5V, VIN = 12V (Figure 3) (H-Grade) DE = TE = 0V, VCC = 0V or 5V, VIN = –7V, (Figure 3) (H-Grade) ● ● –145 250 μA μA RIN Receiver Input Resistance RE = VCC or 0V, DE = TE = 0V, VIN = –7V, –3V, 3V, 7V, 12V (Figure 3) (C, I-Grade) ● 96 125 k Ω RE = VCC or 0V, DE = TE = 0V, VIN = –7V, –3V, 3V, 7V, 12V (Figure 3) (H-Grade) ● 48 125 k Ω VTH Receiver Differential Input Threshold Voltage –7V ≤ B ≤ 12V ● ±0.2 V ΔVTH Receiver Input Hysteresis B = 0V 25 mV VOH Receiver Output High Voltage I(RO) = –4mA, A-B = 200mV, VCC = 4.5V ● 2.4 V VOL Receiver Output Low Voltage I(RO) = 4mA, A-B = –200mV, VCC = 4.5V ● 0.4 V IOZR Receiver Three-State (High Impedance) Output Current on RO RE = 5V, 0V ≤ RO ≤ VCC, LTC2856-1, LTC2856-2, LTC2858-1, LTC2858-2 ● ±1 μA Logic VIH Logic Input High Voltage DE, DI, RE, VCC = 5.5V ● 2V VIL Logic Input Low Voltage DE, DI, RE, VCC = 4.5V ● 0.8 V IINL Logic Input Current DE, DI, RE ● 0 ±10 μA Supplies ICCS Supply Current in Shutdown Mode DE = 0V, RE = VCC, LTC2856, LTC2858 (C and I-Grade) LTC2856, LTC2858 (H-Grade) ● ● 0 0 5 15 μA μA ICCR Supply Current in Receive Mode No Load, DE = 0V, RE = 0V, LTC2856-1, LTC2856-2, LTC2858-1, LTC2858-2 ● 540 900 μA The ● denotes the specifications which apply over the full operating temperature range, otherwise specifications are at TA = 25°C. VCC = 5V unless otherwise noted. (Note 2) |
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