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5962-0620701Q3A Datasheet(PDF) 3 Page - Intersil Corporation |
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5962-0620701Q3A Datasheet(HTML) 3 Page - Intersil Corporation |
3 / 9 page 3 FN6297.0 May 31, 2006 Pin Descriptions PIN FUNCTION VCC System power supply input (3.0V to 3.6V). 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. EN Active low receiver enable control; doesn’t disable ROUTB outputs. FORCEOFF Active low control to shut down transmitters and on-chip power supply. This overrides any automatic circuitry and FORCEON (See Tables 1 & 2, Note 1). FORCEON Active high input to override automatic powerdown circuitry thereby keeping transmitters active. (FORCEOFF must be high, Note 1). NOTE: 1. The ICL3238E 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. TABLE 1. POWER-DOWN LOGIC TRUTH TABLE RCVR OR XMTR EDGE WITHIN 30 SEC? FORCEOFF INPUT FORCEON INPUT TRANSMITTER OUTPUTS RECEIVER OUTPUTS ROUTB OUTPUT RS-232 LEVEL PRESENT AT RECEIVER INPUT? INVALID OUTPUT MODE OF OPERATION ICL3238E No H H Active Active Active No L Normal Operation (Enhanced Auto Power-down Disabled) No H H Active Active Active Yes H Yes H L Active Active Active No L Normal Operation (Enhanced Auto Power-down Enabled) Yes H L Active Active Active Yes H No H L High-Z Active Active No L Power-down Due to Enhanced Auto Power-down Logic No H L High-Z Active Active Yes H X L X High-Z High-Z Active No L Manual Power-down X L X High-Z High-Z Active Yes H 5962-0620701Q3A, 5962-0620702Q3A, 5962-0620703Q2A, 5962-0620704Q2A |
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