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ISL3172EIBZ Datasheet(PDF) 3 Page - Intersil Corporation |
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ISL3172EIBZ Datasheet(HTML) 3 Page - Intersil Corporation |
3 / 19 page 3 FN6307.2 August 28, 2006 Truth Tables TRANSMITTING INPUTS OUTPUTS RE DE DI Z Y X 1101 X 1010 0 0 X High-Z High-Z 1 0 X High-Z * High-Z * NOTE: *Shutdown Mode (See Note 9), except for ISL3171E, ISL3174E, ISL3177E RECEIVING INPUTS OUTPUT RE DE Half Duplex DE Full Duplex A-B RO 00 X ≥ -0.05V 1 00 X ≤ -0.2V 0 0 0 X Inputs Open/Shorted 1 1 0 0 X High-Z * 1 1 1 X High-Z NOTE: *Shutdown Mode (See Note 9), except for ISL3171E, ISL3174E, ISL3177E Pin Descriptions PIN FUNCTION RO Receiver output: If A-B ≥ -50mV, RO is high; If A-B ≤ -200mV, RO is low; RO = High if A and B are unconnected (floating) or shorted. RE Receiver output enable. RO is enabled when RE is low; RO is high impedance when RE is high. If the Rx enable function isn’t used, connect RE directly to GND or through a 1k Ω to 3kΩ resistor to GND. DE Driver output enable. The driver outputs, Y and Z, are enabled by bringing DE high, and are high impedance when DE is low. If the Tx enable function isn’t used, connect DE to VCC through a 1kΩ to 3kΩ resistor. DI Driver input. A low on DI forces output Y low and output Z high. Similarly, a high on DI forces output Y high and output Z low. GND Ground connection. A/Y ±15kV IEC61000 ESD Protected RS-485/422 level, noninverting receiver input and noninverting driver output. Pin is an input if DE = 0; pin is an output if DE = 1. B/Z ±15kV IEC61000 ESD Protected RS-485/422 level, Inverting receiver input and inverting driver output. Pin is an input if DE = 0; pin is an output if DE = 1. A ±15kV IEC61000 ESD Protected RS-485/422 level, noninverting receiver input. B ±15kV IEC61000 ESD Protected RS-485/422 level, inverting receiver input. Y ±15kV IEC61000 ESD Protected RS-485/422 level, noninverting driver output. Z ±15kV IEC61000 ESD Protected RS-485/422 level, inverting driver output. VCC System power supply input (3.0V to 3.6V). NC No Connection. ISL3170E, ISL3171E, ISL3172E, ISL3173E, ISL3174E, ISL3175E,ISL3176E, ISL3177E, ISL3178E |
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