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ISL4245E データシート(PDF) 3 Page - Intersil Corporation |
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ISL4245E データシート(HTML) 3 Page - Intersil Corporation |
3 / 17 page 3 Pin Descriptions PIN FUNCTION VCC System power supply input (2.7V to 5.5V). V+ Internally generated positive transmitter supply (+5.5V). V- Internally generated negative transmitter supply (-5.5V). GND Ground connection. C1+ External capacitor (voltage doubler) is connected to this lead. C1- External capacitor (voltage doubler) is connected to this lead. C2+ External capacitor (voltage inverter) is connected to this lead. C2- External capacitor (voltage inverter) is connected to this lead. TIN TTL/CMOS compatible transmitter Inputs. (Note 1) TOUT ±15kV ESD Protected, RS-232 level (nominally ±5.5V) transmitter outputs. RIN ±15kV ESD Protected, RS-232 compatible receiver inputs. ROUT TTL/CMOS level receiver outputs. ROUTB TTL/CMOS level, noninverting, always enabled receiver outputs. INVALID Active low output that indicates if no valid RS-232 levels are present on any receiver input. FORCEOFF Active low to shut down transmitters and on-chip power supply. This overrides any automatic circuitry and FORCEON (see Table 2). FORCEON Active high input to override automatic powerdown circuitry thereby keeping transmitters active. (FORCEOFF must be high). NOTE: 1. ISL4238E input pins incorporate positive feedback resistors. Once the input is driven to a valid logic level, the feedback resistor maintains that logic level until VCC is removed. Unused transmitter inputs may be left unconnected by the user. ISL4238E, ISL4244E, ISL4245E |
同様の部品番号 - ISL4245E |
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同様の説明 - ISL4245E |
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