ISL4270EIRZ-T Intersil, ISL4270EIRZ-T Datasheet
ISL4270EIRZ-T
Specifications of ISL4270EIRZ-T
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ISL4270EIRZ-T Summary of contents
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... PDA’s and PDA Cradles - Cellular/Mobile Phones Ordering Information PART NUMBER (Note) ISL4270EIRZ* ISL4270 EIRZ *Add “-T” suffix for tape and reel. Please refer to TB347 for details on reel specifications. NOTE: These Intersil Pb-free plastic packaged products employ special Pb-free material sets, molding compounds/die attach ...
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Pinout INVALID Pin Descriptions PIN V System power supply input (3.0V to 5.5V 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 ...
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Typical Operating Circuit TTL/CMOS LOGIC LEVELS LOGIC V CONTROL LOGIC 3 ISL4270E +3.3V + 0.1μ C1 0.1μ C2+ + 0.1μ C2 ...
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... Thermal Resistance (Typical, Notes 1, 2) θ QFN Package Moisture Sensitivity (see Technical Brief TB363) QFN Package Level 1 Maximum Junction Temperature (Plastic Package 150 Maximum Storage Temperature Range . . . . . . . . . . -65 Pb-Free Reflow Profile .see link below http://www.intersil.com/pbfree/Pb-FreeReflow.asp Operating Conditions +0.3V) L Temperature Range . . . . . . . . . . . . . . . . . . . . . . . . . . - 5.5V 0.1µ ...
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Electrical Specifications Test Conditions: V Typicals are at T PARAMETER TRANSMITTER OUTPUTS Output Voltage Swing All Transmitter Outputs Loaded with 3kΩ to Ground = 0V, Transmitter Output = ±2V Output Resistance V CC Output Short-Circuit Current ...
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... The circuit is divided into three sections: The charge pump, the transmitters, and the receivers. Charge-Pump Intersil’s new ISL4270E utilizes regulated on-chip dual charge pumps as voltage doublers, and voltage inverters to generate ±5.5V transmitter supplies from a V low as 3.0V. This allows these devices to maintain RS-232 compliant output levels over the ± ...
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RCVR OR XMTR EDGE WITHIN 30 FORCEOFF FORCEON SEC? INPUT INPUT YES H L YES INVALID DRIVING FORCEON AND FORCEOFF ...
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INVALID Output The INVALID output always indicates (see Table 2) whether or not 30μs have elapsed with invalid RS-232 signals (see Figures 4 and 7) persisting on all of the receiver inputs, giving the user an easy way to determine ...
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DRIVING FORCEON AND FORCEOFF” section of Table 2 for an operational summary. This operational mode is perfect for handheld devices that communicate with another computer via a detachable cable. Detaching the cable allows the internal receiver pull-down resistors to ...
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FORCEOFF 2V/DIV V = +3. 0.1μF TIME (20μs/DIV.) FIGURE 8. TRANSMITTER OUTPUTS WHEN EXITING POWERDOWN High Data Rates The ISL4270E maintains the RS-232 transmitter output voltages even at high data rates. Figure 9 details ...
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ESD Protection All pins on the 3V interface devices include ESD protection structures, but the ISL4270E incorporates advanced structures which allow the RS-232 pins (transmitter outputs and receiver inputs) to survive ESD events up to ±15kV. The RS-232 pins ...
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... Accordingly, the reader is cautioned to verify that data sheets are current before placing orders. Information furnished by Intersil is believed to be accurate and reliable. However, no responsibility is assumed by Intersil or its subsidiaries for its use; nor for any infringements of patents or other rights of third parties which may result from its use ...
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Package Outline Drawing L32.5x5B 32 LEAD QUAD FLAT NO-LEAD PLASTIC PACKAGE Rev 3, 5/10 5.00 6 PIN 1 INDEX AREA (4X) 0.15 TOP VIEW ( 4. 80 TYP ) ( TYPICAL RECOMMENDED LAND PATTERN 13 ISL4270E A ...