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SN75276 Datasheet(PDF) 6 Page - STMicroelectronics |
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SN75276 Datasheet(HTML) 6 Page - STMicroelectronics |
6 / 16 page SN75276 FAIL-SAFE DIFFERENTIAL BUS TRANSCEIVER SLLS212B – SEPTEMBER 1995 – REVISED APRIL 1998 6 POST OFFICE BOX 655303 • DALLAS, TEXAS 75265 DRIVER SECTION 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 None Vt (Test Termination 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 V VIT – Negative-going input threshold voltage VO = 0.5 V, IO = 8 mA – 0.3‡ V VIK Enable clamp voltage II = – 18 mA – 1.5 V VOH High level output voltage VID = 0, 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 = – 300 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 5 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 negative-going input threshold voltage levels only. NOTE 5: This applies for both power on and power off. Refer to TIA/EIA-485-A for exact conditions. |
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