Yomismo

®

ICL3221, ICL3222, ICL3223, ICL3232, ICL3241, ICL3243
Data Sheet March 1, 2006 FN4805.21

One Microamp Supply-Current, +3V to +5.5V, 250kbps, RS-232 Transmitters/Receivers
The Intersil ICL32XX devices are 3.0V to 5.5V powered RS-232 transmitters/receivers which meet ElA/TIA-232 and V.28/V.24 specifications, even at VCC = 3.0V. Targeted applications are PDAs, Palmtops, and notebook andlaptop computers where the low operational, and even lower standby, power consumption is critical. Efficient on-chip charge pumps, coupled with manual and automatic powerdown functions (except for the ICL3232), reduce the standby supply current to a 1µA trickle. Small footprint packaging, and the use of small, low value capacitors ensure board space savings as well. Data rates greater than 250kbpsare guaranteed at worst case load conditions. This family is fully compatible with 3.3V only systems, mixed 3.3V and 5.0V systems, and 5.0V only systems. The ICL324X are 3-driver, 5-receiver devices that provide a complete serial port suitable for laptop or notebook computers. Both devices also include noninverting alwaysactive receivers for “wake-up” capability. The ICL3221, ICL3223 and ICL3243,feature an automatic powerdown function which powers down the on-chip power-supply and driver circuits. This occurs when an attached peripheral device is shut off or the RS-232 cable is removed, conserving system power automatically without changes to the hardware or operating system. These devices power up again when a valid RS-232 voltage is applied to any receiver input. Table 1 summarizes thefeatures of the devices represented by this data sheet, while Application Note AN9863 summarizes the features of each device comprising the ICL32XX 3V family.

Features
• Pb-Free Plus Anneal Available as an Option (RoHS Compliant) (See Ordering Info) • 15kV ESD Protected (Human Body Model) • Drop in Replacements for MAX3221, MAX3222, MAX3223, MAX3232, MAX3241, MAX3243, SP3243 • ICL3221 is LowPower, Pin Compatible Upgrade for 5V MAX221 • ICL3222 is Low Power, Pin Compatible Upgrade for 5V MAX242, and SP312A • ICL3232 is Low Power Upgrade for HIN232/ICL232 and Pin Compatible Competitor Devices • RS-232 Compatible with VCC = 2.7V • Meets EIA/TIA-232 and V.28/V.24 Specifications at 3V • Latch-Up Free • On-Chip Voltage Converters Require Only Four External 0.1µF Capacitors • Manual andAutomatic Powerdown Features (Except ICL3232) • Guaranteed Mouse Driveability (ICL324X Only) • Receiver Hysteresis For Improved Noise Immunity • Guaranteed Minimum Data Rate . . . . . . . . . . . . . 250kbps • Guaranteed Minimum Slew Rate . . . . . . . . . . . . . . . 6V/µs • Wide Power Supply Range . . . . . . . Single +3V to +5.5V • Low Supply Current in Powerdown State. . . . . . . . . . .1µAApplications
• Any System Requiring RS-232 Communication Ports - Battery Powered, Hand-Held, and Portable Equipment - Laptop Computers, Notebooks, Palmtops - Modems, Printers and other Peripherals - Digital Cameras - Cellular/Mobile Phones

TABLE 1. SUMMARY OF FEATURES NO. OF NO. OF PART NUMBER Tx. Rx. ICL3221 ICL3222 ICL3223 ICL3232 ICL3241 ICL3243 1 2 2 2 3 3 1 2 2 2 5 5 NO. OF MONITOR Rx.(ROUTB) 0 0 0 0 2 1 DATA RATE (kbps) 250 250 250 250 250 250 Rx. ENABLE FUNCTION? Yes Yes Yes No Yes No READY OUTPUT? No No No No No No MANUAL POWERDOWN? Yes Yes Yes No Yes Yes AUTOMATIC POWERDOWN FUNCTION? Yes No Yes No No Yes

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CAUTION: These devices are sensitive to electrostatic discharge; follow proper IC Handling Procedures. 1-888-INTERSIL or 1-888-468-3774 | Intersil (and design) is aregistered trademark of Intersil Americas Inc. Copyright Intersil Americas Inc. 1999-2006. All Rights Reserved All other trademarks mentioned are the property of their respective owners.

ICL3221, ICL3222, ICL3223, ICL3232, ICL3241, ICL3243 Ordering Information
PART NUMBER (NOTE 1) ICL3221CA ICL3221CAZ (Note 2) ICL3221CV ICL3221CVZ (Note 2) ICL3221IA ICL3221IAZ (Note 2) ICL3222CA ICL3222CAZ (Note...