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SN75179BDRG4 Datasheet(PDF) 5 Page - Texas Instruments |
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SN75179BDRG4 Datasheet(HTML) 5 Page - Texas Instruments |
5 / 17 page SN75179B DIFFERENTIAL DRIVER AND RECEIVER PAIR SLLS003E – OCTOBER 1985 – REVISED JUNE 1998 5 POST OFFICE BOX 655303 • DALLAS, TEXAS 75265 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 –) 50 mV VOH High-level output voltage VID = 200 mV, IOH = – 400 µA, See Figure 2 2.7 V VOL Low-level output voltage VID = – 200 mV, IOL = 8 mA, See Figure 2 0.45 V II Line input current Other input at 0 V See Note 5 VI = 12 V 1 mA II Line input current Other input at 0 V, See Note 5 VI = – 7 V – 0.8 mA ri Input resistance 12 k Ω IOS Short-circuit output current –15 –85 mA ICC Supply current (total package) No load 57 70 mA † All typical values are at VCC = 5 V, TA = 25°C. ‡ The algebraic convention, where 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: Refer to TIA/EIA-422-B for exact conditions. switching characteristics, VCC = 5 V, TA = 25°C PARAMETER TEST CONDITIONS MIN TYP MAX UNIT tPLH Propagation delay time, low- to high-level output VID = – 1.5 V to 1.5 V, 19 35 ns tPHL Propagation delay time, high- to low-level output ID CL = 15 pF, See Figure 4 30 40 ns PARAMETER MEASUREMENT INFORMATION VOD2 RL 2 VOC RL 2 Figure 1. Driver VDD and VOC VID –IOH VOH + IOL VOL Figure 2. Receiver VOH and VOL |
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