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ISL32453E Folha de dados(PDF) 4 Page - Intersil Corporation |
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ISL32453E Folha de dados(HTML) 4 Page - Intersil Corporation |
4 / 21 page ISL32450E, ISL32452E, ISL32453E, ISL32455E, ISL32457E 4 FN7921.0 February 20, 2012 Pin Descriptions PIN NAME ISL32450E, ISL32453E, (14 LD SOIC) PIN # ISL32450E, ISL32453E, (10 LD MSOP) PIN # ISL32452E, ISL32455E (8 LD SOIC, 8 LD MSOP) PIN # ISL32457E (8 LD SOIC, 8 LD MSOP) PIN # FUNCTION RO 2 1 1 1 Receiver output. For parts without the cable invert function - or if INV is low - then: If A - B ≥ -10mV, RO is high; if A - B ≤ -200mV, RO is low. If INV is high, then: If B - A ≥ -10mV, RO is high; if B - A ≤ -200mV, RO is low. In all cases, RO = High if A and B are unconnected (floating), or shorted together, or connected to an undriven, terminated bus (i.e., Rx is always failsafe open, shorted, and idle, even if polarity is inverted). RE 3 2 2 N/A Receiver output enable. RO is enabled when RE is low; RO is high impedance when RE is high. Internally pulled low. DE 4 3 3 3 Driver output enable. The driver outputs, Y and Z, are enabled by bringing DE high, and they are high impedance when DE is low. Internally pulled high. DI 5 4 4 4 Driver input. For parts without the cable invert function - or if INV is low - a low on DI forces output Y low and output Z high, while a high on DI forces output Y high and output Z low. The output states, relative to DI, invert if INV is high. GND 6, 7 5 5 5 Ground connection. A/Y N/A N/A 6 6 ±60V Fault Protected and ±15kV ESD protected RS-485/RS-422 I/O pin. For parts without the cable invert function - or if INV is low - A/Y is the non-inverting receiver input and non-inverting driver output. If INV is high, A/Y is the inverting receiver input and the inverting driver output. Pin is an input if DE = 0; pin is an output if DE = 1. B/Z N/A N/A 7 7 ±60V Fault Protected and ±15kV ESD protected RS-485/RS-422 I/O pin. For parts without the cable invert function - or if INV is low - B/Z is the inverting receiver input and inverting driver output. If INV is high, B/Z is the non-inverting receiver input and the non-inverting driver output. Pin is an input if DE = 0; pin is an output if DE = 1. A 12 9 N/A N/A ±60V Fault Protected and ±15kV ESD protected RS-485/RS-422 non-inverting receiver input. B 11 8 N/A N/A ±60V Fault Protected and ±15kV ESD protected RS-485/RS-422 inverting receiver input. Y 9 6 N/A N/A ±60V Fault Protected and ±15kV ESD protected RS-485/RS-422 non-inverting driver output. Z 10 7 N/A N/A ±60V Fault Protected and ±15kV ESD protected RS-485/RS-422 inverting driver output. VCC 14 10 8 8 System power supply input (3V to 5.5V). INV N/A N/A N/A 2 Receiver and driver Cable Invert (polarity selection) input. When driven high this pin swaps the polarity of the driver output and receiver input pins. If unconnected (floating) or connected low, normal RS-485 polarity conventions apply. Internally pulled low. NC 1, 8, 13 N/A N/A N/A No Internal Connection. |
Nº de peça semelhante - ISL32453E |
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Descrição semelhante - ISL32453E |
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