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ISL4491EIBZ датащи(PDF) 9 Page - Intersil Corporation |
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ISL4491EIBZ датащи(HTML) 9 Page - Intersil Corporation |
9 / 12 page 9 FN6074.3 ESD Protection All pins on these devices include class 3 Human Body Model (HBM) ESD protection structures, but the RS-485 pins (driver outputs and receiver inputs) incorporate advanced structures allowing them to survive ESD events in excess of ±15kV HBM. The RS-485 pins are particularly vulnerable to ESD damage because they typically connect to an exposed port on the exterior of the finished product. Simply touching the port pins, or connecting a cable, can cause an ESD event that might destroy unprotected ICs. These new ESD structures protect the device whether or not it is powered up, protect without allowing any latchup mechanism to activate, and without degrading the RS-485 common mode range of -7V to +12V. This built-in ESD protection eliminates the need for board level protection structures (e.g., transient suppression diodes), and the associated, undesirable capacitive load they present. Typical Performance Curves VCC = 5V, TA = 25°C; Unless Otherwise Specified FIGURE 6. DRIVER OUTPUT CURRENT vs DIFFERENTIAL OUTPUT VOLTAGE FIGURE 7. DRIVER DIFFERENTIAL OUTPUT VOLTAGE vs TEMPERATURE FIGURE 8. DRIVER OUTPUT CURRENT vs SHORT CIRCUIT VOLTAGE FIGURE 9. SUPPLY CURRENT vs TEMPERATURE DIFFERENTIAL OUTPUT VOLTAGE (V) 012 345 0 10 20 30 40 50 60 70 80 90 -40 0 50 85 2 2.2 2.4 2.6 2.8 3 3.2 3.4 3.6 TEMPERATURE (°C) -25 25 75 RDIFF = 54Ω RDIFF = 100Ω OUTPUT VOLTAGE (V) -7 -6 -4 -2 0 2 4 6 8 10 12 -60 -40 -20 0 20 40 60 80 100 120 140 160 -80 -100 -120 Y OR Z = HIGH Y OR Z = LOW ISL4491E ISL4491E ISL4489E ISL4489E -40 0 50 85 TEMPERATURE (°C) -25 25 75 50 100 150 200 250 300 350 400 ISL4491E , DE = X, RE = X ISL4489E , DE = X, RE = X ISL4489E, ISL4491E |
Аналогичный номер детали - ISL4491EIBZ |
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Аналогичное описание - ISL4491EIBZ |
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