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SN75ALS170ADW Datasheet(PDF) 5 Page - Texas Instruments |
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SN75ALS170ADW Datasheet(HTML) 5 Page - Texas Instruments |
5 / 21 page SN75ALS170, SN75ALS170A TRIPLE DIFFERENTIAL BUS TRANSCEIVER SLLS055D – AUGUST 1987 – REVISED SEPTEMBER 1995 5 POST OFFICE BOX 655303 • DALLAS, TEXAS 75265 DRIVER SECTION electrical characteristics over recommended ranges of supply voltage and operating free-air temperature (unless otherwise noted) PARAMETER TEST CONDITIONS† MIN TYP‡ MAX UNIT VIK Input clamp voltage II = – 19 mA – 1.5 V VO Output voltage IO = 0 0 6 V VCC = 4 75 V VIH =2V VOH High-level output voltage VCC = 4.75 V, VIL 08 V VIH = 2 V, IOH 55 mA 2.7 V VOH High level out ut voltage VIL = 0.8 V, IOH = – 55 mA 2.7 V VOL Low-level output voltage VCC = 4.75 V, VIL = 0.8 V, VIH = 2 V, IOL = 55 mA 1.7 V | VOD1 | Differential output voltage IO = 0 1.5 6 V | VOD2 | Differential output voltage RL = 100 Ω, See Figure 1 1/2 VOD1 or 2§ V OD2 g RL = 54 Ω, See Figure 1 1.5 2.5 5 V VOD3 Differential output voltage Vtest = – 7 V to 12 V, See Figure 2 1.5 5 V ∆ | VOD | Change in magnitude of differential output voltage¶ ±0.2 V VOC Common mode output voltage R 540 Ω or 100 Ω See Figure 1 3 V VOC Common-mode output voltage RL = 540 Ω or 100 Ω, See Figure 1 –1 V ∆ | VOC | Change in magnitude of common-mode output voltage¶ ±0.2 V IO Output current Output disabled, VO = 12 V 1 mA IO Output current , See Note 3 VO = –7 V – 0.8 mA IIH High-level input current VI = 2.4 V 20 µA IIL Low-level input current VI = 0.4 V – 400 µA VO = – 6 V – 250 IOS Short circuit output current VO = 0 – 150 mA IOS Short-circuit output current VO = VCC 250 mA VO = 8 V 250 ICC Supply current No load Outputs enabled 69 90 mA ICC Supply current No load Outputs disabled 57 78 mA † The power-off measurement in ANSI Standard EIA/TIA-422-B applies to disabled outputs only and is not applied to combined inputs and outputs. ‡ All typical values are at VCC = 5 V and TA = 25°C. § The minimum VOD2 with a 100-Ω load is either 1/2 VOD1 or 2 V, whichever is greater. ¶ ∆ | VOD | and ∆ | VOC | are the changes in magnitude of VOD and VOC respectively, that occur when the input is changed from a high level to a low level. NOTE 3: This applies for both power on and off; refer to EIA Standard RS-485 for exact conditions. The EIA/TIA-422-B limit does not apply for a combined driver and receiver terminal. |
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