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ISL4223EIR Datasheet(PDF) 3 Page - Intersil Corporation |
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ISL4223EIR Datasheet(HTML) 3 Page - Intersil Corporation |
3 / 14 page 3 FN6045.6 May 13, 2010 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. This is also the potential of the thermal pad (PD) 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. 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. 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 power-down circuitry thereby keeping transmitters active. (FORCEOFF must be high). EN Active low receiver enable control. PD Exposed Thermal Pad. Connect to GND. Typical Operating Circuits ISL3232E 14 VCC T1OUT T2OUT T1IN T2IN T1 T2 0.1µF + 0.1µF + 0.1µF 9 8 12 5 15 1 16 4 V+ V- C1+ C1- C2+ C2- + 0.1µF 2 3 R1OUT R1IN 11 5k Ω R2OUT R2IN 6 7 5k Ω 10 C1 C2 + C3 C4 GND +3.3V + 0.1µF 13 TTL/CMOS LOGIC LEVELS RS-232 LEVELS R1 R2 ISL3232E, ISL4221E, ISL4223E |
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