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SN75176B Datasheet(PDF) 6 Page - Texas Instruments |
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SN75176B Datasheet(HTML) 6 Page - Texas Instruments |
6 / 18 page SN65176B, SN75176B DIFFERENTIAL BUS TRANSCEIVERS SLLS101D – JULY 1985 – REVISED APRIL 2003 6 POST OFFICE BOX 655303 • DALLAS, TEXAS 75265 SYMBOL EQUIVALENTS DATA-SHEET PARAMETER TIA/EIA-422-B TIA/EIA-485-A VO Voa, Vob Voa, Vob |VOD1| Vo Vo |VOD2| Vt (RL = 100 Ω) Vt (RL = 54 Ω) |VOD3| Vt (test termination |VOD3| t ( measurement 2) ∆|VOD| | |Vt| – |Vt| | | |Vt – |Vt| | VOC |Vos| |Vos| ∆|VOC| |Vos – Vos| |Vos – Vos| IOS |Isa|, |Isb| IO |Ixa|, |Ixb| 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 Input hysteresis voltage (VIT+ – VIT–) 50 mV VIK Enable Input clamp voltage II = –18 mA –1.5 V VOH High level output voltage VID = 200 mV, IOH = –400 µA, 27 V VOH High-level output voltage ID , See Figure 2 OH µ , 2.7 V VOL Low level output voltage VID = –200 mV, IOL = 8 mA, 045 V VOL Low-level output voltage ID , See Figure 2 OL , 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 , See Note 7 VI = –7 V –0.8 mA IIH High-level enable input current VIH = 2.7 V 20 µA IIL Low-level enable input current VIL = 0.4 V –100 µA rI Input resistance VI = 12 V 12 k Ω IOS Short-circuit output current –15 –85 mA ICC Supply current (total package) No load Outputs enabled 42 55 mA ICC Supply current (total package) No load Outputs disabled 26 35 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 7: This applies for both power on and power off. Refer to EIA Standard TIA/EIA-485-A for exact conditions. |
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