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ISL31472EIPZ Folha de dados(PDF) 3 Page - Intersil Corporation |
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ISL31472EIPZ Folha de dados(HTML) 3 Page - Intersil Corporation |
3 / 21 page ISL31470E, ISL31472E, ISL31475E, ISL31478E 3 FN7639.0 June 17, 2010 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: *Low Power Shutdown Mode (see Note 13, page 9). RECEIVING INPUTS OUTPUT RE DE Half Duplex DE Full Duplex A-B RO 00 X ≥ -0.01V 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: *Low Power Shutdown Mode (see Note 13, page 9). Pin Descriptions PIN NAME 8 LD PIN # 14 LD PIN # FUNCTION RO 1 2 Receiver output: If A-B ≥ -10mV, RO is high; If A-B ≤ -200mV, RO is low; RO = High if A and B are unconnected (floating), shorted together, or connected to an undriven, terminated bus. RE 2 3 Receiver output enable. RO is enabled when RE is low; RO is high impedance when RE is high. Internally pulled low. DE 3 4 Driver output enable. The driver outputs, Y and Z, are enabled by bringing DE high. They are high impedance when DE is low. Internally pulled high. DI 4 5 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 5 6, 7 Ground connection. A/Y 6 - ±60V Fault Protected, RS-485/RS-422 level, non-inverting receiver input and non-inverting driver output. Pin is an input if DE = 0; pin is an output if DE = 1. B/Z 7 - ±60V Fault Protected, RS-485/RS-422 level, inverting receiver input and inverting driver output. Pin is an input if DE = 0; pin is an output if DE = 1. A - 12 ±60V Fault Protected, RS-485/RS-422 level, non-inverting receiver input. B - 11 ±60V Fault Protected, RS-485/RS-422 level, inverting receiver input. Y - 9 ±60V Fault Protected, RS-485/RS-422 level, non-inverting driver output. Z - 10 ±60V Fault Protected, RS-485/RS-422 level, inverting driver output. VCC 8 13, 14 System power supply input (4.5V to 5.5V). NC - 1, 8 No Internal Connection. |
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