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SN75ALS181 Fiches technique(PDF) 6 Page - Texas Instruments |
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SN75ALS181 Fiches technique(HTML) 6 Page - Texas Instruments |
6 / 14 page SN75ALS181 DIFFERENTIAL DRIVER AND RECEIVER PAIR SLLS152B – DECEMBER 1992 – REVISED APRIL 2003 6 POST OFFICE BOX 655303 • DALLAS, TEXAS 75265 RECEIVER SECTION electrical characteristics over recommended ranges of supply voltage, common-mode input voltage, and operating free-air temperature (unless otherwise noted) PARAMETER TEST CONDITIONS MIN TYP† MAX UNIT VT+ Positive-going threshold voltage, differential input VO = 2.7 V, IO = –0.4 mA 0.2 V VT– Negative-going threshold voltage, differential input VO = 0.5 V, IO = 8 mA –0.2 V Vhys Input hysteresis (VT+ – VT–) 60 mV VIK Input clamp voltage, RE II = –18 mA –1.5 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 IOZ High-impedance-state output current VO = 0.4 V to 2.4 V ±20 µA II Line input current Other input at 0 V, VI = 12 V 1 mA II Line input current , See Note 7 VI = –7 V –0.8 mA IIH High-level input current, RE VIH = 2.7 V 20 µA IIL Low-level input current, RE VIL = 0.4 V –100 µA ri Input resistance 12 k Ω IOS Short-circuit output current VID = 200 mV, VO = 0 V –15 –85 mA ICC Supply current (total package) No load Outputs enabled 21 30 mA ICC Supply current (total package) No load Outputs disabled 14 21 mA † All typical values are at VCC = 5 V and TA = 25°C. NOTE 7: This applies for both power on and power off. Refer to TIA/EIA-485-A for exact conditions. switching characteristics over recommended ranges of supply voltage and operating free-air temperature, CL = 15 pF (unless otherwise noted) (see Figure 7) PARAMETER TEST CONDITIONS MIN TYP† MAX UNIT tPHL Propagation delay time, high- to low-level output VID = –1.5 V to 1.5 V 10 16 25 ns tPLH Propagation delay time, low- to high-level output VID = –1.5 V to 1.5 V 10 16 25 ns tsk(p) Pulse skew (|tPLH – tPHL|) VID = –1.5 V to 1.5 V 1 8 ns tPZH Output enable time to high level 7 15 ns tPZL Output enable time to low level 9 19 ns tPHZ Output disable time from high level 18 27 ns tPLZ Output disable time from low level 10 15 ns † All typical values are at VCC = 5 V and TA = 25°C. |
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