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ISL3159EFUZ Datasheet(PDF) 3 Page - Intersil Corporation |
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ISL3159EFUZ Datasheet(HTML) 3 Page - Intersil Corporation |
3 / 16 page ISL3159E 3 FN6364.2 August 25, 2015 Submit Document Feedback 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, or connected to a terminated bus that is undriven. 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 required, connect RE directly to GND. DE Driver output enable. The driver outputs, Y and Z, are enabled by bringing DE high. They are high impedance when DE is low. If the Tx enable function isn’t required, connect DE to VCC through a 1kΩ or greater 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. This is also the potential of the DFN’s exposed metal pad. A/Y ±15kV IEC61000 ESD protected RS-485/422 level, noninverting receiver input and noninverting driver output. Pin is an input (A) if DE = 0; pin is an output (Y) if DE = 1. B/Z ±15kV IEC61000 ESD protected RS-485/422 level, inverting receiver input and inverting driver output. Pin is an input (B) if DE = 0; pin is an output (Z) if DE = 1. VCC System power supply input (4.5V to 5.5V). NC No internal connection. EP The exposed metal pad on the bottom of the DFN; connect to GND. Typical Operating Circuit FIGURE 2. TYPICAL OPERATING CIRCUIT 0.1µF + D R 7 6 8 1 2 3 4 5 VCC GND RO RE DE DI A/Y B/Z +5V 0.1µF + D R 6 7 8 1 2 3 4 5 VCC GND RO RE DE DI A/Y B/Z +5V RT RT SOIC AND MSOP PIN NUMBERS SHOWN |
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