PARAMETER | SYMBOL | TEST CONDITIONS | TEMP (°C) | MIN | TYP | MAX | UNIT |
DC CHARACTERISTICS |
Driver Differential VOUT (no load) | VOD1 |
| Full | - | - | VCC | V |
Driver Differential VOUT (with load) | VOD2 | R = 50Ω (RS-422) (Figure 1) | Full | 2 | 3 | - | V |
R = 27Ω (RS-485) (Figure 1) | Full | 1.5 | 2.3 | 5 | V |
Change in Magnitude of Driver Differential VOUT for Complementary Output States | VOD | R = 27Ω or 50Ω (Figure 1) | Full | - | 0.01 | 0.2 | V |
Driver Common-Mode VOUT | VOC | R = 27Ω or 50Ω (Figure 1) | Full | - | - | 3 | V |
Change in Magnitude of Driver Common-Mode VOUT for Complementary Output States | VOC | R = 27Ω or 50Ω (Figure 1) | Full | - | 0.01 | 0.2 | V |
Logic Input High Voltage | VIH | file:///C:\Users\ADMINI~1\AppData\Local\Temp\ksohtml\clip_image2.pngDE, DI, RE | Full | 2 | - | - | V |
Logic Input Low Voltage | VIL | file:///C:\Users\ADMINI~1\AppData\Local\Temp\ksohtml\clip_image3.pngDE, DI, RE | Full | - | - | 0.8 | V |
Logic Input Current | IIN1 | DI | Full | -2 | - | 2 | µA |
file:///C:\Users\ADMINI~1\AppData\Local\Temp\ksohtml\clip_image4.pngDE, RE | Full | -40 | - | 40 | µA |
Input Current (A, B) (Note 8) | IIN2 | DE = 0V, VCC = 0V or
4.5 to 5.5V | VIN = 12V | Full | - | - | 130 | µA |
VIN = -7V | Full | -100 | - | - | µA |
Driver Tri-State (High Impedance) Output Current (Y, Z) | IOZD | -7V ≤ VO ≤ 12V | Full | -100 | - | 100 | µA |
Receiver Differential Threshold Voltage | VTH | -7V ≤ VCM ≤ 12V | Full | -0.2 | - | 0.2 | V |
Receiver Input Hysteresis | VTH | VCM = 0V | +25 | - | 70 | - | mV |
Receiver Output High Voltage | VOH | IO = -4mA, VID = 200mV | Full | 3.5 | - | - | V |
Receiver Output Low Voltage | VOL | IO = -4mA, VID = 200mV | Full | - | - | 0.4 | V |
Tri-State (high impedance) Receiver Output Current | IOZR | 0.4V ≤ VO ≤ 2.4V | Full | - | - | ±1 | µA |
Receiver Input Resistance | RIN | -7V ≤ VCM ≤ 12V | Full | 92 | 120 | - | kΩ |
No-Load Supply Current (Note 6) | ICC | file:///C:\Users\ADMINI~1\AppData\Local\Temp\ksohtml\clip_image5.pngISL4489E, DE, DI, RE = 0V or VCC | Full | - | 140 | 190 | µA |
file:///C:\Users\ADMINI~1\AppData\Local\Temp\ksohtml\clip_image6.pngISL4491E, DE, DI, RE = 0V or VCC | Full | - | 370 | 460 | µA |
Driver Short-Circuit Current, VO = High or Low | IOSD1 | DE = VCC, -7V ≤ VY or VZ ≤ 12V (Note 7) | Full | 35 | - | 250 | mA |
Receiver Short-Circuit Current | IOSR | 0V ≤ VO ≤ VCC | Full | 7 | - | 85 | mA |