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LTM2881IV-5-PBF Datasheet(PDF) 3 Page - Linear Technology |
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LTM2881IV-5-PBF Datasheet(HTML) 3 Page - Linear Technology |
3 / 22 page LTM2881 2881fa elecTrical characTerisTics SYMBOL PARAMETER CONDITIONS MIN TYP MAX UNITS Power Supply VCC VCC Supply Voltage LTM2881-3 LTM2881-5 l l 3.0 4.5 3.3 5.0 3.6 5.5 V V VL VL Supply Voltage l 1.62 5.5 V ICCPOFF VCC Supply Current in Off Mode ON = 0V l 0 10 µA ICCS VCC Supply Current in On Mode LTM2881-3 DE = 0V, RE = VL, No Load LTM2881-5 DE = 0V, RE = VL, No Load l l 20 15 25 19 mA mA VCC2 Regulated VCC2 Output Voltage, Loaded LTM2881-3 DE = 0V, RE = VL, ILOAD = 100mA LTM2881-5 DE = 0V, RE = VL, ILOAD = 150mA l 4.7 4.7 5.0 5.0 V V VCC2NOLOAD Regulated VCC2 Output Voltage, No Load DE = 0V, RE = VL, No Load 4.8 5.0 5.35 V Efficiency ICC2 = 100mA, LTM2881-5 (Note 2) 62 % ICC2S VCC2 Short-Circuit Current DE = 0V, RE = VL, VCC2 = 0V l 250 mA Driver |VOD| Differential Driver Output Voltage R = ∞ (Figure 1) R = 27Ω (RS485) (Figure 1) R = 50Ω (RS422) (Figure 1) l l l 1.5 2 VCC2 VCC2 VCC2 V V V ∆|VOD| Difference in Magnitude of Driver Differential Output Voltage for Complementary Output States R = 27Ω or R = 50Ω (Figure 1) l 0.2 V VOC Driver Common Mode Output Voltage R = 27Ω or R = 50Ω (Figure 1) l 3 V ∆|VOC| Difference in Magnitude of Driver Common Mode Output Voltage for Complementary Output States R = 27Ω or R = 50Ω (Figure 1) l 0.2 V IOZD Driver Three-State (High Impedance) Output Current on Y and Z DE = 0V, (Y or Z) = –7V, +12V l ±10 µA IOSD Maximum Driver Short-Circuit Current –7V ≤ (Y or Z) ≤ 12V (Figure 2) l – 250 250 mA Receiver RIN Receiver Input Resistance RE = 0V or VL, VIN = –7V, –3V, 3V, 7V, 12V (Figure 3) l 96 125 kΩ RTE Receiver Termination Resistance Enabled TE = VL, VAB = 2V, VB = –7V, 0V, 10V (Figure 8) l 108 120 156 Ω IIN Receiver Input Current (A, B) ON = 0V VCC2 = 0V or 5V, VIN = 12V (Figure 3) l 125 µA ON = 0V VCC2 = 0V or 5V, VIN = –7V (Figure 3) l –100 µA VTH Receiver Differential Input Threshold Voltage (A-B) –7V ≤ B ≤ 12V l –0.2 0.2 V ∆VTH Receiver Input Failsafe Hysteresis B = 0V 25 mV Receiver Input Failsafe Threshold B = 0V –0.2 –0.05 0 V Logic VIL Logic Input Low Voltage 1.62V ≤ VL ≤ 5.5V l 0.4 V VIH Logic Input High Voltage DIN SLO DI, TE, DE, ON, RE: VL ≥ 2.35V 1.62V ≤ VL < 2.35V l l l l 0.67•VCC2 2 0.67•VL 0.75•VL V V V V The l denotes the specifications which apply over the full operating temperature range, otherwise specifications are at TA = 25°C. LTM2881-3 VCC = 3.3V, LTM2881-5 VCC = 5.0V, VL = 3.3V, GND = GND2 = 0V, ON = VL unless otherwise noted. |
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