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LTC1546I Datasheet(PDF) 3 Page - Linear Technology |
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LTC1546I Datasheet(HTML) 3 Page - Linear Technology |
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3 / 20 page  3 LTC1546 The q denotes specifications which apply over the full operating temperature range, otherwise specifications are at TA = 25°C. VCC = 5V (Notes 2, 3) SYMBOL PARAMETER CONDITIONS MIN TYP MAX UNITS fOSC Charge Pump Oscillator Frequency 500 kHz tr Charge Pump Rise Time No-Cable Mode/Power-Off to Normal Operation 2 ms Logic Inputs and Outputs VIH Logic Input High Voltage q 2V VIL Logic Input Low Voltage q 0.8 V IIN Logic Input Current D1, D2, D3 q ±10 µA M0, M1, M2, DCE = GND q – 120 – 75 – 30 µA M0, M1, M2, DCE = VCC q ±10 µA VOH Output High Voltage IO = – 3mA q 3 4.5 V VOL Output Low Voltage IO = 3mA q 0.3 0.45 V IOSR Output Short-Circuit Current 0V ≤ VO ≤ VCC q –50 50 mA IOZR Three-State Output Current M0 = M1 = M2 = VCC, 0V ≤ VO ≤ VCC ±1 µA V.11 Driver VODO Open Circuit Differential Output Voltage RL = 1.95k (Figure 1) q ± 5V VODL Loaded Differential Output Voltage RL = 50Ω (Figure 1) 0.5VODO 0.67VODO V RL = 50Ω (Figure 1) q ±2V ∆VOD Change in Magnitude of Differential RL = 50Ω (Figure 1) q 0.2 V Output Voltage VOC Common Mode Output Voltage RL = 50Ω (Figure 1) q 3V ∆VOC Change in Magnitude of Common Mode RL = 50Ω (Figure 1) q 0.2 V Output Voltage ISS Short-Circuit Current VOUT = GND ±150 mA IOZ Output Leakage Current VA and VB ≤ 0.25V, Power Off or q ± 1 ±100 µA No-Cable Mode or Driver Disabled tr, tf Rise or Fall Time (Figures 2, 13) q 215 25 ns tPLH Input to Output Rising (Figures 2, 13) q 15 40 65 ns tPHL Input to Output Falling (Figures 2, 13) q 15 40 65 ns ∆t Input to Output Difference, tPLH – tPHL (Figures 2, 13) q 03 12 ns tSKEW Output to Output Skew (Figures 2, 13) 3 ns V.11 Receiver VTH Input Threshold Voltage – 7V ≤ VCM ≤ 7V q – 0.2 0.2 V ∆VTH Input Hysteresis – 7V ≤ VCM ≤ 7V q 15 40 mV RIN Input Impedance –7V ≤ VCM ≤ 7V (Figure 3) q 100 103 Ω tr, tf Rise or Fall Time CL = 50pF (Figures 4, 14) 15 ns tPLH Input to Output Rising CL = 50pF (Figures 4, 14) q 50 90 ns tPHL Input to Output Falling CL = 50pF (Figures 4, 14) q 50 90 ns ∆t Input to Output Difference, tPLH – tPHL CL = 50pF (Figures 4, 14) q 04 25 ns V.35 Driver VOD Differential Output Voltage Open Circuit, RL = 1.95k (Figure 5) q ±1.2 V With Load, – 4V ≤ VCM ≤ 4V (Figure 6) ±0.44 ±0.55 ±0.66 V VOA, VOB Single-Ended Output Voltage Open Circuit, RL = 1.95k (Figure 5) q ±1.2 V VOC Transmitter Output Offset RL = 50Ω (Figure 5) q ±0.6 V ELECTRICAL CHARACTERISTICS |
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