The Intersil ICL3237 contains 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 cell phones, 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 powerdown function, 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 1Mbps (MBAUD = VCC) 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

• ±15kV ESD Protected (Human Body Model)

• Drop in Replacement for MAX3237

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

• Latch-Up Free

• On-Chip Voltage Converters Require Only Four External Capacitors

• Manual Powerdown Features

• Flow Through Pinout

• Receiver Hysteresis For Improved Noise Immunity

• Pin Selectable Data Rate

• Guaranteed Minimum Data Rate . . . . . . . 250kbps/1Mbps

• Guaranteed Minimum Slew Rate . . . . . . . 6V/µs or 24V/µs

• Wide Power Supply Range . . . . . . . Single +3V to +5.5V

• Low Supply Current in Powerdown State. . . . . . . . . . .1µA

• Pb-Free Plus Anneal 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 Phone