ICL3244 INTERSIL [Intersil Corporation], ICL3244 Datasheet
ICL3244
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ICL3244 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 ICL3244 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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... Active High Input to override automatic powerdown circuitry thereby keeping transmitters active. (FORCEOFF must be high). Typical Operating Circuit +3.3V + 0.1 F TTL/CMOS LOGIC LEVELS CONTROL LOGIC 4-2 ICL3244 FUNCTION ICL3244 C1 0 C1- ICL3244 C2 ...
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... CC Input Hysteresis Input Resistance TRANSMITTER OUTPUTS Output Voltage Swing All Transmitter Outputs Loaded with 3k to Ground 4-3 ICL3244 Thermal Information Thermal Resistance (Typical, Note SOIC Package . . . . . . . . . . . . . . . . . . . . . . . . 28 Ld SSOP Package . . . . . . . . . . . . . . . . . . . . . . . Moisture Sensitivity (see Technical Brief TB363) All Packages Level 1 Maximum Junction Temperature (Plastic Package 150 25V Maximum Storage Temperature Range ...
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... Automatic Powerdown or FORCEOFF = GND MOUSE DRIVEABILITY Transmitter Output Voltage T1 IN (Figure 11) GND, T1 ENHANCED AUTOMATIC POWERDOWN (FORCEON = GND, FORCEOFF = V Receiver Input Thresholds to ICL3244 Powers Up (Figure 6) INVALID High Receiver Input Thresholds to ICL3244 Powers Down (Figure 6) INVALID Low INVALID Output Voltage Low I OUT INVALID Output Voltage High ...
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... ICL3244 - INVALID DRIVING FORCEON AND FORCEOFF (EMULATES AUTOMATIC POWERDOWN) X Note 3 Note 3 X Note 3 Note 3 NOTE: 3. Input is connected to INVALID Output. 4-5 ICL3244 Transmitter outputs disable and assume a high impedance state when the device enters the powerdown mode (see Table 2) ...
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... Table 2 for details. This micro-power mode makes this device ideal for battery powered and portable applications. Software Controlled (Manual) Powerdown R XOUT The ICL3244 allows the user to force the IC into the low V V ROUT CC power, standby state, and utilizes a two pin approach where the FORCEON and FORCEOFF inputs determine the IC’ ...
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... Figure 8), but this has no direct effect on the state of the ICL3244 (see the next sections for methods of utilizing INVALID to power down the device). INVALID switches high 1 s after detecting a valid RS-232 level on a receiver input ...
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... ICL3221/23/43) by connecting the INVALID output to the FORCEON and FORCEOFF inputs, as shown in Figure 9. After invalid receiver levels, INVALID switches low and drives the ICL3244 into a forced powerdown condition. INVALID switches high as soon as a receiver input senses a valid RS-232 level, forcing the ICL3244 to power on. See the “ ...
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... TIME (20 s/DIV.) FIGURE 10. TRANSMITTER OUTPUTS WHEN EXITING POWERDOWN Mouse Driveability The ICL3244 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 5V during worst case conditions (15mA for paralleled V+ transmitters, 7 ...
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... 0 s/DIV. FIGURE 14. LOOPBACK TEST AT 250kbps Interconnection with 3V and 5V Logic The ICL3244 directly interfaces with most 5V logic families, including ACT and HCT CMOS. See Table 4 for more information on possible combinations of interconnections. TABLE 4. LOGIC FAMILY COMPATIBILITY WITH VARIOUS SUPPLY VOLTAGES V ...
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... FIGURE 17. SUPPLY CURRENT vs LOAD CAPACITANCE WHEN TRANSMITTING DATA Die Characteristics DIE DIMENSIONS: 100 mils x 127 mils (2550 m x 3230 m) METALLIZATION: Type: Metal 1: AISi (1%) Å Thickness: Metal 1: 8k Type: Metal 2: AISi (1%) Å Thickness: Metal 2: 10k SUBSTRATE POTENTIAL (POWERED UP): GND 4-11 ICL3244 3.3V OUT ...
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... Dimension “B” does not include dambar protrusion. Allowable dam- bar 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. 4-12 ICL3244 M28.209 28 LEAD SHRINK SMALL OUTLINE PLASTIC PACKAGE ...
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... For information regarding Intersil Corporation and its products, see web site www.intersil.com Sales Office Headquarters NORTH AMERICA Intersil Corporation P. O. Box 883, Mail Stop 53-204 Melbourne, FL 32902 TEL: (321) 724-7000 FAX: (321) 724-7240 4-13 ICL3244 M28.3 (JEDEC MS-013-AE ISSUE C) 28 LEAD WIDE BODY SMALL OUTLINE PLASTIC PACKAGE SYMBOL A ...