ICL3244E Intersil Corporation, ICL3244E Datasheet
ICL3244E
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ICL3244E Summary of contents
Page 1
... This family is fully compatible with 3.3V only systems, mixed 3.3V and 5.0V systems, and 5.0V only systems. The ICL3244E driver, 5 receiver device that provides a complete serial port suitable for laptop or notebook computers. It also includes a noninverting always-active receiver for “wake-up” capability. ...
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... V+ C1- 4 C2 OUT OUT 2 ICL3224E, ICL3226E, ICL3244E TEMP. RANGE (° ...
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... 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). 3 ICL3224E, ICL3226E, ICL3244E ICL3244E (SOIC, SSOP) TOP VIEW C2 ...
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... Typical Operating Circuits TTL/CMOS LOGIC LEVELS +3.3V + TTL/CMOS LOGIC LEVELS 4 ICL3224E, ICL3226E, ICL3244E ICL3224E +3.3V + 0.1µ C1 0.1µ C2+ + 0.1µ C2 OUT 5kΩ OUT 5kΩ READY FORCEOFF 14 INVALID FORCEON ...
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... Typical Operating Circuits TTL/CMOS LOGIC LEVELS 5 ICL3224E, ICL3226E, ICL3244E (Continued) ICL3244E +3.3V + 0.1µ C1 0.1µ C2+ + 0.1µ OUTB 19 R1 OUT OUT OUT OUT ...
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... Input Logic Threshold Low T , FORCEON, FORCEOFF IN Input Logic Threshold High T , FORCEON, FORCEOFF IN Transmitter Input Hysteresis Input Leakage Current T , FORCEON, FORCEOFF IN Output Leakage Current FORCEOFF = GND, ICL3244E Only Output Voltage Low I OUT Output Voltage High I OUT RECEIVER INPUTS Input Voltage Range Input Threshold Low ...
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... AUTOPWDN TIMING CHARACTERISTICS Maximum Data Rate R = 3kΩ Receiver Propagation Delay Receiver Input to Receiver Output, C Receiver Output Enable Time Normal Operation (ICL3244E Only) Receiver Output Disable Time Normal Operation (ICL3244E Only) Transmitter Skew PHL 7 ICL3224E, ICL3226E, ICL3244E = 3V to 5.5V 0 25° ...
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... Receivers All the ICL32XXE devices contain standard inverting receivers, but only the ICL3244E receivers can three-state, CC via the FORCEOFF control line. Additionally, the ICL3244E includes a noninverting (monitor) receiver (denoted by the R OUTB any control lines. Both receiver types convert RS-232 signals to CMOS output levels and accept inputs up to ± ...
Page 9
... ICL3244E - INVALID DRIVING FORCEON AND FORCEOFF (EMULATES AUTOMATIC POWERDOWN) X NOTE 4 NOTE 4 X NOTE 4 NOTE 4 NOTES: 3. Applies only to the ICL3244E. 4. Input is connected to INVALID Output. 9 ICL3224E, ICL3226E, ICL3244E driving powered down peripherals must be disabled to prevent current flow through the peripheral’s protection diodes (see Figures 2 and 3) ...
Page 10
... FLOW powerdown is desired, the user must strap FORCEON high to disable the enhanced automatic powerdown circuitry. ICL3244E inverting (standard) receiver outputs also disable when the device is in powerdown, thereby eliminating the possible current path through a shutdown peripheral’s input protection diode (see Figures 2 and 3). ...
Page 11
... The ICL32XXE automatically powers back up 11 ICL3224E, ICL3226E, ICL3244E whenever it detects a transition on one of these inputs. This automatic powerdown feature provides additional system power savings without changes to the existing operating 1MΩ ...
Page 12
... FORCEOFF = 1) and a transition occurs on a receiver or transmitter input (see Figure 7). For immediate power up when the cable is reattached, connect FORCEON to FORCEOFF through a network similar to that shown in Figure 5. 12 ICL3224E, ICL3226E, ICL3244E AUTOPWDN CPU FIGURE 9. CONNECTIONS FOR AUTOMATIC POWERDOWN ...
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... FIGURE 10. TRANSMITTER OUTPUTS WHEN EXITING POWERDOWN 13 ICL3224E, ICL3226E, ICL3244E Mouse Driveability The ICL3244E is specifically designed to power a serial mouse while operating from low voltage supplies. Figure 11 shows the transmitter output voltages under increasing load current. The on-chip switching regulator ensures the transmitters will supply at least conditions (15mA for paralleled V+ transmitters, 7 ...
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... CMOS, and with TTL. ICL32XX outputs are incompatible with AC, HC, and CD4000 CMOS inputs. 14 ICL3224E, ICL3226E, ICL3244E ±15kV ESD Protection All pins on ICL32XX devices include ESD protection structures, but the ICL32XXE family incorporates advanced structures which allow the RS-232 pins (transmitter outputs and receiver inputs) to survive ESD events up to ± ...
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... FIGURE 17. SUPPLY CURRENT vs LOAD CAPACITANCE WHEN TRANSMITTING DATA 45 ICL3244E 1000 2000 3000 LOAD CAPACITANCE (pF) FIGURE 19. SUPPLY CURRENT vs LOAD CAPACITANCE WHEN TRANSMITTING DATA 15 ICL3224E, ICL3226E, ICL3244E V = 3.3V 25° OUT OUT 4000 5000 250kbps 120kbps ...
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... Die Characteristics SUBSTRATE POTENTIAL (POWERED UP) GND TRANSISTOR COUNT ICL3224E: 937 ICL3226E: 825 ICL3244E: 1109 PROCESS Si Gate CMOS 16 ICL3224E, ICL3226E, ICL3244E ...
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... Dimension “B” does not include dambar protrusion. Allowable dambar protrusion shall be 0.13mm (0.005 inch) total in excess of “B” dimension at maximum material condition. 10. Controlling dimension: MILLIMETER. Converted inch dimen- sions are not necessarily exact. 17 ICL3224E, ICL3226E, ICL3244E M20.209 20 LEAD SHRINK SMALL OUTLINE PLASTIC PACKAGE ...
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... Dimension “B” does not include dambar protrusion. Allowable dambar protrusion shall be 0.13mm (0.005 inch) total in excess of “B” dimen- sion at maximum material condition. 10. Controlling dimension: MILLIMETER. Converted inch dimensions are not necessarily exact. 18 ICL3224E, ICL3226E, ICL3244E M16.209 16 LEAD SHRINK SMALL OUTLINE PLASTIC PACKAGE ...
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... Dimension “B” does not include dambar protrusion. Allowable dambar protrusion shall be 0.13mm (0.005 inch) total in excess of “B” dimension at maximum material condition. 10. Controlling dimension: MILLIMETER. Converted inch dimensions are not necessarily exact. 19 ICL3224E, ICL3226E, ICL3244E M28.209 28 LEAD SHRINK SMALL OUTLINE PLASTIC PACKAGE ...
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... 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. No license is granted by implication or otherwise under any patent or patent rights of Intersil or its subsidiaries. For information regarding Intersil Corporation and its products, see www.intersil.com 20 ICL3224E, ICL3226E, ICL3244E M28.3 28 LEAD WIDE BODY SMALL OUTLINE PLASTIC PACKAGE M ...