The Intersil ICL32xxE 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. Additionally, they provide ±15kV ESD protection (IEC61000-4-2 Air Gap and Human Body Model) on transmitter outputs and receiver inputs (RS- 232 pins). Targeted applications are PDAs, Palmtops, and notebook and laptop computers where the low operational, and even lower standby, power consumption is critical. Efficient on-chip charge pumps, coupled with manual and automatic power-down functions (except for the ICL3232E), 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  greater than 250kbps are guaranteed at worst case load conditions. This family is fully compatible with 3.3Vonly systems, mixed 3.3V and 5.0V systems, and 5.0V-only systems.

Features
• ESD Protection for RS-232 I/O Pins to ±15kV (IEC61000)
• Drop in Replacements for MAX3221E, MAX3222E, MAX3223E, MAX3232E, MAX3241E, MAX3243E, SP3243E
• ICL3221E is a Low Power, Pin Compatible Upgrade for 5V MAX221E
• ICL3222E is a Low Power, Pin Compatible Upgrade for 5V MAX242E, and SP312E
• ICL3232E is a Low Power Upgrade for HIN232E, 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 and Automatic Power-Down Features
• Guaranteed Mouse Driveability (ICL324xE Only)
• Receiver Hysteresis For Improved Noise Immunity
• Guaranteed Minimum Data Rate 250kbps
• Wide Power Supply Range Single +3V to +5.5V
• Low Supply Current in Power-Down State1µA
• Pb-Free Available (RoHS Compliant)

Applications
• 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