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SN65LBC176 Datasheet(PDF) 5 Page - Texas Instruments |
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SN65LBC176 Datasheet(HTML) 5 Page - Texas Instruments |
5 / 15 page SN65LBC176Q1 DIFFERENTIAL BUS TRANSCEIVER SGLS211A − OCTOBER 2003 − REVISED MAY 2008 5 POST OFFICE BOX 655303 • DALLAS, TEXAS 75265 SYMBOL EQUIVALENTS DATA SHEET PARAMETER RS-485 VO Voa, Vob | VOD1 | Vo | VOD2 | Vt (RL = 54 Ω) | VOD3 | Vt (test termination measurement 2) ∆ | VOD | || Vt | − | Vt || VOC | Vos | ∆ | VOC | | Vos − Vos | IOS None IO Iia, Iib RECEIVER SECTION electrical characteristics over recommended ranges of common-mode input voltage, supply voltage, and operating free-air temperature (unless otherwise noted) PARAMETER TEST CONDITIONS MIN TYP† MAX UNIT VIT + Positive-going input threshold voltage VO = 2.7 V, IO = − 0.4 mA 0.2 V VIT − Negative-going input threshold voltage VO = 0.5 V, IO = 8 mA − 0.2‡ V Vhys Hysteresis voltage (VIT + − VIT −) (see Figure 4) 50 mV VIK Enable-input clamp voltage II = − 18 mA − 1.5 V VOH High-level output voltage VID = 200 mV, IOH = − 400 A, See Figure 6 2.7 V VOH High-level output voltage VID = 200 mV, IOH = − 400 µA, See Figure 6 2.7 V VOL Low-level output voltage VID = 200 mV, IOL = 8 mA, See Figure 6 0.45 V VOL Low-level output voltage VID = 200 mV, IOL = 8 mA, See Figure 6 0.45 V IOZ High-impedance-state output current VO = 0.4 V to 2.4 V ±20 µA II Line input current Other input = 0 V, VI = 12 V 1 mA II Line input current Other input = 0 V, See Note 5 VI = − 7 V − 0.8 mA IIH High-level enable-input current VIH = 2.7 V − 100 µA IIL Low-level enable-input current VIL = 0.4 V − 100 µA rI Input resistance 12 k Ω ICC Supply current VI = 0 or VCC, Receiver enabled and driver disabled 3.9 mA ICC Supply current VI = 0 or VCC, No load Receiver and driver disabled 0.25 mA † All typical values are at VCC = 5 V, TA = 25°C. ‡ The algebraic convention, in which the less-positive (more-negative) limit is designated minimum, is used in this data sheet for common-mode input voltage and threshold voltage levels only. NOTE 5: This applies for both power on and power off. Refer to ANSI Standard RS-485 for exact conditions. |
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