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DS36C278TN Datasheet(PDF) 3 Page - National Semiconductor (TI) |
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DS36C278TN Datasheet(HTML) 3 Page - National Semiconductor (TI) |
3 / 10 page Electrical Characteristics (Notes 3, 4) (Continued) Over Supply Voltage and Operating Temperature ranges, unless otherwise specified Symbol Parameter Conditions Reference Min Typ Max Units RECEIVER CHARACTERISTICS I B Input Balance Test RS = 500 Ω (422) (Note 10) ±400 mV V OH High Level Output Voltage I OH = −4 mA, VID = +0.2V RO Figure 11 3.5 4.6 V V OL Low Level Output Voltage I OL = +4 mA, VID = −0.2V 0.3 0.5 V I OSR Short Circuit Current V O = GND RO 735 85 mA I OZR TRI-STATE Leakage Current V O = 0.4V to 2.4V ±1µA DEVICE CHARACTERISTICS V IH High Level Input Voltage DE, RE*, DI 2.0 V CC V V IL Low Level Input Voltage GND 0.8 V I IH High Level Input Current V IH =VCC 2µA I IL Low Level Input Current V CC =5V V IL =0V −2 µA V CC = +3.0V −2 µA I CC Power Supply Current Driver and Receiver ON V CC 200 500 µA I CCR (No Load) Driver OFF, Receiver ON 200 500 µA I CCD Driver ON, Receiver OFF 200 500 µA I CCZ Driver and Receiver OFF 200 500 µA Switching Characteristics (Notes 4, 9) Over Supply Voltage and Operating Temperature ranges, unless otherwise specified Symbol Parameter Conditions Reference Min Typ Max Units DRIVER CHARACTERISTICS t PHLD Differential Propagation Delay High to Low R L =54 Ω,C L = 100 pF Figures 5, 6 10 39 80 ns t PLHD Differential Propagation Delay Low to High 10 40 80 ns t SKD Differential Skew |t PHLD −tPLHD| 0 1 10 ns t r Rise Time 325 50 ns t f Fall Time 325 50 ns t PHZ Disable Time High to Z C L =15pF Figures 7, 8 — 80 200 ns t PLZ Disable Time Low to Z RE*=L Figures 9, 10 — 80 200 ns t PZH Enable Time Z to High C L = 100 pF Figures 7, 8 — 50 200 ns t PZL Enable Time Z to Low RE*=L Figures 9, 10 — 65 200 ns RECEIVER CHARACTERISTICS t PHL Propagation Delay High to Low C L =15pF Figures 12, 13 30 210 400 ns t PLH Propagation Delay Low to High 30 190 400 ns t SK Skew, |t PHL −tPLH| 0 20 50 ns t PLZ Output Disable Time C L =15pF Figures 14, 15, 16 — 50 150 ns t PHZ — 55 150 ns t PZL Output Enable Time — 40 150 ns t PZH — 45 150 ns www.national.com 3 |
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