The Intersil ICL3238E 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. Additionally, it provides ±15kV ESD protection (IEC61000-4-2 Air Gap and Human Body Model) on transmitter outputs and receiver inputs (RS-232 pins). Targeted applications are cell phones, Palmtops, and data cables 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 10nA 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 providing compatibility with popular PC communication software.

Features

• Pb-Free Available as an Option (see Ordering Info)

• ESD Protection for RS-232 I/O Pins to ±15kV (IEC61000)

• Active Feedback Resistors on TX and Logic Inputs.

• Manual and Enhanced Automatic Powerdown Features

• Pin Compatible Replacement for MAX3238E, MAX3238, SP3238E

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

• RS-232 Compatible Outputs at 2.7V Supply

• Flow Through Pinout

• Latch-Up Free

• On-Chip Voltage Converters Require Only Four External Capacitors

• Receiver and Transmitter 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. . . . . . . . . 10nA

Applications

• Any System Requiring RS-232 Communication Ports

   - Battery Powered, Hand-Held, and Portable Equipment

   - Data Cradles

   - Modems, Printers and other Peripherals

   - Cellular/Mobile Phones, Data Cables