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SN75LBC176P Datasheet(PDF) 7 Page - Texas Instruments |
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SN75LBC176P Datasheet(HTML) 7 Page - Texas Instruments |
7 / 22 page SN55LBC176, SN65LBC176, SN65LBC176Q, SN75LBC176 DIFFERENTIAL BUS TRANSCEIVERS SLLS067G − AUGUST 1990 − REVISED APRIL 2006 7 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 −) (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 µA, 2.7 V VOH High-level output voltage VID = 200 mV, See Figure 6 IOH = − 400 µA, 2.7 V VOL Low-level output voltage VID = −200 mV, IOL = 8 mA, 0.45 V VOL Low-level output voltage VID = −200 mV, See Figure 6 IOL = 8 mA, 0.45 V IOZ High-impedance-state output current VO = 0.4 V to 2.4 V −20 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 Receiver enabled and driver disabled 3.9 mA ICC Supply current VI = 0 or VCC, No load Receiver and SN55LBC176, SN65LBC176, 0.25 ICC Supply current No load Receiver and driver disabled SN65LBC176, SN65LBC176Q 0.25 mA driver disabled SN75LBC176 0.2 † 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. NOTE 5: This applies for both power on and power off. Refer to ANSI Standard RS-485 for exact conditions. switching characteristics over recommended ranges of supply voltage and operating free-air temperature, CL = 15 pF PARAMETER TEST CONDITIONS SN55LBC176 SN65LBC176Q SN65LBC176 SN75LBC176 UNIT PARAMETER TEST CONDITIONS MIN MAX MIN TYP† MAX UNIT tPLH Propagation delay time, low- to high-level single-ended output VID = − 1.5 V to 1.5 V, 11 37 11 33 ns tPHL Propagation delay time, high- to low-level single-ended output VID = − 1.5 V to 1.5 V, See Figure 7 11 37 11 33 ns tsk(p) Pulse skew ( | tPLH − tPHL |) 10 3 6 ns tPZH Output enable time to high level See Figure 8 35 35 ns tPZL Output enable time to low level See Figure 8 35 30 ns tPHZ Output disable time from high level See Figure 8 35 35 ns tPLZ Output disable time from low level See Figure 8 35 30 ns † All typical values are at VCC = 5 V, TA = 25°C. |
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