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 and laptop computers where the low operational, and even lower standby, power consumption is critical. Efficient on-chip charge pumps, coupled with manual and enhanced automatic powerdown functions, 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 250kbps are 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.

Features

• Pb-Free Plus Anneal Available (RoHS Compliant)

• ±15kV ESD Protected (Human Body Model)

• Manual and Enhanced Automatic Powerdown Features

• Drop in Replacements for MAX3224, MAX3226, MAX3238, MAX3244

• Meets EIA/TIA-232 and V.28/V.24 Specifications at 3V

• Latch-Up Free

• RS-232 Compatible with VCC = 2.7V

• On-Chip Voltage Converters Require Only Four External 0.1µF Capacitors

• Flow-Through Pinout (ICL3238)

• Guaranteed Mouse Driveability (ICL3244)

• “Ready to Transmit” Indicator Output (ICL3224/26)

• 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. . . . . . . . . . .1µA

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

- Data Cradles