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ISL32485E データシート(PDF) 3 Page - Intersil Corporation |
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ISL32485E データシート(HTML) 3 Page - Intersil Corporation |
3 / 17 page ISL32483E, ISL32485E 3 FN7785.0 January 18, 2011 Pin Descriptions PIN NAME ISL32483E PIN # ISL32485E PIN # FUNCTION RO 2 1 Receiver output. If INV or RINV is low, then: If A - B ≥ -10mV, RO is high; if A - B ≤ -200mV, RO is low. If INV or RINV 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 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 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 to VCC. DI 5 4 Driver input. If INV or DINV 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 or DINV is high. GND 6, 7 5 Ground connection. A/Y N/A 6 ±60V Fault and ±16.5kV HBM ESD Protected RS-485/RS-422 level I/O pin. 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 7 ±60V Fault and ±16.5kV HBM ESD Protected RS-485/RS-422 level I/O pin. 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 N/A ±60V Fault and ±15kV HBM ESD Protected RS-485/RS-422 level input. If RINV is low, then A is the non-inverting receiver input. If RINV is high, then A is the inverting receiver input. B 11 N/A ±60V Fault and ±15kV HBM ESD Protected RS-485/RS-422 level input. If RINV is low, then B is the inverting receiver input. If RINV is high, then B is the non-inverting receiver input. Y 9 N/A ±60V Fault and ±15kV HBM ESD Protected RS-485/RS-422 level output. If DINV is low, then Y is the non-inverting driver output. If DINV is high, then Y is the inverting driver output Z 10 N/A ±60V Fault and ±15kV HBM ESD Protected RS-485/RS-422 level. If DINV is low, then Z is the inverting driver output. If DINV is high, then Z is the non-inverting driver output VCC 13, 14 8 System power supply input (4.5V to 5.5V). INV N/A 2 Receiver and driver 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. RINV 1 N/A Receiver polarity selection input. When driven high, this pin swaps the polarity of the receiver input pins. If unconnected (floating) or connected low, normal RS-485 polarity conventions apply. Internally pulled low. DINV 8 N/A Driver polarity selection input. When driven high, this pin swaps the polarity of the driver output pins. If unconnected (floating) or connected low, normal RS-485 polarity conventions apply. Internally pulled low. |
同様の部品番号 - ISL32485E |
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同様の説明 - ISL32485E |
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