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SN65HVD78DGKR Datasheet(PDF) 4 Page - Texas Instruments |
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SN65HVD78DGKR Datasheet(HTML) 4 Page - Texas Instruments |
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4 / 30 page  SN65HVD72 SN65HVD75 SN65HVD78 SLLSE11C – MARCH 2012 – REVISED SEPTEMBER 2013 www.ti.com ELECTRICAL CHARACTERISTICS over recommended operating range (unless otherwise specified) PARAMETER TEST CONDITIONS MIN TYP MAX UNIT RL = 60 Ω, 375 Ω on each output to See 1.5 2 V -7 V to 12 V Figure 1 Driver differential output voltage |VOD| RL = 54 Ω (RS-485) 1.5 2 V magnitude RL = 100 Ω (RS-422) TJ ≥ 0°C, 2 2.5 V VCC ≥ 3.2V Change in magnitude of driver Δ|VOD| RL = 54 Ω, CL = 50 pF –50 0 50 mV differential output voltage See Steady-state common-mode output Figure 2 VOC(SS) 1 VCC/2 3 V voltage Change in differential driver output ΔVOC Center of two 27- Ω load resistors –50 0 50 mV common-mode voltage Peak-to-peak driver common-mode VOC(PP) 200 mV output voltage COD Differential output capacitance 15 pF Positive-going receiver differential VIT+ See (1) –70 –20 mV input voltage threshold Negative-going receiver differential VIT– –200 –150 See (1) mV input voltage threshold Receiver differential input voltage VHYS 50 80 mV threshold hysteresis (VIT+ – VIT–) VOH Receiver high-level output voltage IOH = –8 mA 2.4 VCC–0.3 V VOL Receiver low-level output voltage IOL = 8 mA 0.2 0.4 V Driver input, driver enable, and II –2 2 µA receiver enable input current Receiver output high-impedance IOZ VO = 0 V or VCC, RE at VCC –1 1 µA current IOS Driver short-circuit output current –160 160 mA VI = 12 V 75 150 µA HVD72, 75 VI = –7 V –100 –40 µA VCC = 3 to 3.6 V or II Bus input current (disabled driver) VCC = 0 V, DE at 0 V VI = 12 V 240 333 µA HVD78 VI = –7 V –267 –180 µA Driver and Receiver DE=VCC, RE=GND, No 750 950 µA enabled load Driver enabled, DE=VCC, RE=VCC, No 300 500 µA receiver disabled load ICC Supply current (quiescent) Driver disabled, DE=GND, RE=GND, No 600 800 µA receiver enabled load Driver and receiver DE=GND, D=open 0.1 2 µA disabled RE=VCC, No load Supply current (dynamic) See the TYPICAL CHARACTERISTICS section (1) Under any specific conditions, VIT+ is assured to be at least VHYS higher than VIT-. 4 Submit Documentation Feedback Copyright © 2012–2013, Texas Instruments Incorporated Product Folder Links: SN65HVD72 SN65HVD75 SN65HVD78 |
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